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  • Articles  (23,648)
  • 1965-1969  (23,648)
  • 1969  (23,648)
  • Geosciences  (11,329)
  • Mathematics  (5,035)
  • Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition  (4,389)
  • Energy, Environment Protection, Nuclear Power Engineering  (3,863)
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  • 1965-1969  (23,648)
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  • 1
    Electronic Resource
    Electronic Resource
    DIE SEISMISCHEN GESCHWINDIGKEITEN DER JUNGEREN MOLASSE IM OSTSCHWEIZERISCHEN UND DEUTSCHEN ALPENVORLAND (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 17 (1969), S. 0 
    Details
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: According to a study of seismic velocities in the Alpine Foreland of Eastern Switzerland, the initial velocity is rather high in comparison with other Tertiary basins and shows an exceptionally high increase rate. When analysing the average and the interval velocities, especially of Tertiary strata, and when comparing them with velocities of strata of the same age and a very similar facies of the Northern Rheintalgraben, it has been found that the increase of velocity is closely related to the distance to the Subalpine Molasse. The conclusion is that the velocity of the Tertiary strata is strongly influenced by the folding pressure of the Subalpine Molasse or of the Alps. The same method has been applied to a relatively large number of wells in the area of the “German Molasse”. Not only the results in Eastern Switzerland have been confirmed, but also it has been proved that the diagenesis of the Tertiary strata and, hence, their velocities are influenced only partially by the specific depth of the basin. Velocities increase towards the Folded Molasse or the Alps. Consequently they depend on lateral folding pressure, which decreases from west to east with the increasing width of the basin. The tertiary strata of the basin have been affected by lateral folding pressurefrom south to north. However, structures with lateral compression have not been discovered yet in the German Alpine Foreland.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2478.1969.tb02075.x
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  • 2
    Electronic Resource
    Electronic Resource
    THE ELECTRICAL CURRENT PATTERN INDUCED BY AN OSCILLATING MAGNETIC DIPOLE IN A SEMI INFINITE CONDUCTIVE THIN PLATE (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 17 (1969), S. 0 
    Details
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: In a paper by Koefoed and Kegge (1968), which was based on previous work of Wesley (1958), the electrical current pattern has been derived that is induced by an oscillating magnetic dipole in a semi-infinite thin plate of infinitesimal resistivity.In the present paper, the range of validity of the assumptions, on which the work of Wesley is based, is subjected to a theoretical analysis. It is found that the decisive factor for the validity of Wesley's derivation is the quotient of the square of the penetration depth of the electrical current over the product of the thickness of the plate and a distance that is indicative of the size of the current loops in the plate. Wesley's derivation is shown to be valid only when this factor is negligible. It is also shown that in this condition the imaginary component of the anomaly must be negligible.Model experiments are described in which the electrical current pattern is studied also in the range in which the derivation of Wesley is not valid. The procedure used in these model experiments was to measure the tangential component of the magnetic field strength very close to the metal plate that simulated the conductive dyke.In order to express the results of the measurements in terms of the imaginary to real ratio, these results are compared with an interpretation graph for field measurements that was published by Hedström and Parasnis (1958). It is found that the current pattern in the plate is essentially the same as that which follows from Wesley's derivation, provided that the imaginary to real ratio is less than one third. The measurements do not permit to draw conclusions regarding the current pattern in the plate in conditions that correspond to larger values of the imaginary to real ratio.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2478.1969.tb02078.x
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  • 3
    Electronic Resource
    Electronic Resource
    THEORETICAL RESISTIVITY ANOMALIES ACROSS A SINGLE VERTICAL DISCONTINUITY (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 17 (1969), S. 0 
    Details
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: Electrical resistivity anomalies of a symmetrical four-electrode co-linear system across a single vertical discontinuity are treated in relation to: a) the ratio of potential electrode separation to the current electrode separation that are employed in the system and b) the angle which the electrode alignment makes with the discontinuity. Several conclusions are extracted from this treatment and methods for obtaining an optimum sensitivity of the system, with respect to these parameters, are shown. Disadvantages of special arrangements, such as the Wenner configuration, are indicated. Methods are outlined to utilise variations in the apparent resistivity plot for determining the angle between the electrode alignment and the discontinuity, quantitatively or qualitatively. These variations include certain deviations from the standard curves obtained in longitudinal traverses made at right angles to the discontinuity. Also, a comparison is made between longitudinal and cross traverses, in relation to the discontinuity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2478.1969.tb02072.x
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  • 4
    Electronic Resource
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    THE PATTERN OF GRAZING IN ‘CONTINUOUSLY’ GRAZED SWARDS (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The frequency and severity of defoliation of small sample areas, 8 × 8 cm, was studied in swards of S37 cocksfoot which were maintained at different levels of leaf-area index by continuous grazing with lambs. By varying the number of lambs grazing a plot, the LAI was maintained at three approximately constant levels, 5.3 (H), 4.1 (M), and 3.0 (L). Any one 8 × 8 cm area was grazed on average once every 36 days in treatment H, 24 days in treatment M and 19 days in treatment L. Approximately 24% of the total length of leaf present per tiller was removed each time a tiller was grazed, under all treatments. The lambs tended to graze patches of herbage about 16 × 16 cm, then move to a different place in the sward. These results are discussed in relation to grazing practices aimed at securing the maximum harvested yield.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1969.tb01046.x
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  • 5
    Electronic Resource
    Electronic Resource
    BEEF PRODUCTION FROM PASTURE LEYS IN UGANDA (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The potential for producing beef in savanna grassland areas is discussed in relation to the results obtained from grazing trials on sown pastures at Serere Research Station, Uganda. Liveweight gains from small East African Zebu stock are used to illustrate the progress that has been made in the selection of improved pasture species and mixtures grown at various levels of fertilizer application. The utilization of herbage from selected pastures is shown to vary under different grazing management systems, grazing pressure having the greatest effect upon animal production. The need for further investigations and the integration of existing research findings into farming practice is stressed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1969.tb01049.x
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  • 6
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    BOOK REVIEWS (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Book reviewed in this article:LANGER, R. H. M. [Ed.] The luceme crop.FRYER, J. D.; EVANS, S. A. [Eds] Weed control handbook.RODIN, L. E.; BAZILEVICH, N. I. Production and mineral cycling in terrestrial vegetation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1969.tb01050.x
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  • 7
    Electronic Resource
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    HEAD WAVES IN TWO-DIMENSIONAL SEISMIC MODELS (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 17 (1969), S. 0 
    Details
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: Studies made on head waves in a large number of two-dimensional horizontal and inclined layer seismic models are described. The assumption that the amplitude of head wave decreases exponentially with distance is found to be valid in horizontal layers. For the correct estimation of the head wave decay coefficient, the decrease of amplitude due to the divergence of wave energy should always be considered.The variations of head wave amplitude at large distances from the source appear to follow the theory of Heelan (1953). It is, however, concluded that the theory can only be verified from the measurements in models which have large velocity contrast and thick layer at the top.A prominent interference phenomenon between the direct and head wave has been observed near the critical distance. This is more marked for up-dip profile in the case of inclined layer models. The rate of head wave amplitude decrease with distance beyond the zone of interference is found to depend on dip angle, direction of the dip, and velocity contrast.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2478.1969.tb01987.x
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  • 8
    Electronic Resource
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    VELOCITY SPECTRA AND THEIR USE IN STRATIGRAPHIC AND LITHOLOGIC DIFFERENTIATION (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 17 (1969), S. 0 
    Details
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: Velocity Spectra which were originally developed for the optimum stacking of seismic data have been found to give considerable information concerning lithologic and stratigraphic changes in the geologic section. In the Gulf of Mexico shale sections and sand bodies have been recognized on the Velocity Spectra display, and in the Caribbean last year a first attempt was made to utilize Velocity Spectra information for the determination and mapping of lithology. Since that time, a new program has been developed which takes dip into account when computing the interval velocity. This program has been applied to a seismic section in the North Sea which has resulted in a geologic model derived from interval velocities which were found to be quite consistent. Such a model can be of great value in geological interpretation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2478.1969.tb01988.x
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  • 9
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    ANNOUNCEMENTS (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 17 (1969), S. 0 
    Details
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2478.1969.tb02079.x
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  • 10
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    QUANTITATIVE INTERPRETATION OF TRANSIENT ELECTROMAGNETIC FIELDS OVER A LAYERED HALF SPACE (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 17 (1969), S. 0 
    Details
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: The transient fields from a finite horizontal loop excited by a half sine wave current pulse have been computed numerically for a particular source receiver configuration at a height of 100 meters above a layered ground. The amplitude of the vertical component of the magnetic field has been chosen for the interpretation. Curves of apparent conductivity vs. time, plotted during the off-time of the signal, show that layering is easily resolved, that resonance effects are present and that polarization effects are detectable for certain types of polarization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2478.1969.tb02073.x
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  • 11
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    THE RELATIONSHIP BETWEEN THE SOLUBLE CONSTITUENTS OF HERBAGE AND THEIR DRY-MATTER DIGESTIBILITY (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The use of acid-pepsin or of water to extract herbage samples is described. The relationship between the amount extracted by each and the crude-or true-protein and soluble carbohydrate contents is discussed, especially in relation to herbage digestibility. It is suggested that these simple extractants may be more useful than conventional chemical techniques for assessments of comparative nutritive value of herbages.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1969.tb01083.x
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  • 12
    Electronic Resource
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    INTAKE AND LIVEWEIGHT GAIN OF BEEF CATTLE FED ON MAIZE SILAGE AND DRIED PELLETED WHOLE-CROP BEANS (VICIA FABA L.) (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Three groups of eight 9-month-old steers were fed ad lib. on maize silage alone and with 29 or 57% of the total DM intake as dried and pelleted whole-crop field beans (Vicia faba L.). The total daily DM intakes were 3.7,5.0 and 5.8 kg/head, respectively. The corresponding daily liveweight gains were 0.44, 0.74 and 0.97 kg/ head and the respective values for efficiency of food conversion were 12, 15 and 17 kg liveweight gain per 100 kg DM intake. It is suggested that high-protein artificially-dried forages make a very suitable supplement to a low-protein whole-crop cereal silage.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1969.tb01085.x
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  • 13
    Electronic Resource
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    THE USE OF SHEEP FITTED WITH OBSOPHAGEAL FISTULAE IN GRAZING STUDIES (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Studies were carried out on the effects of diurnal variation, fasting before sampling, and acclimatization to a sward on the chemical composition and in vitro OM digestibility of samples of extrusa collected from sheep fitted with oesophageal fistulae. The N content of extrusa samples increased markedly during the morning, and tended to decline again in the evening. The diurnal changes in digestibility were similar, but the variation was much smaller. There was no significant correlation between either N content or OM digestibility and grazing speed measured in bites per minute. There were no significant changes in either the N content or OM digestibility of successive samples of extrusa collected after over-night fasting, or after the sheep were introduced to a sward to which they were not accustomed, though the concentration of ash in the extrusa was significantly lower when the sheep were hungry than when they were not. The OM digestibility of the diet selected was approximately two units lower on the first two days after introduction to a new sward than the mean value of samples collected over the next 12 days.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1969.tb01089.x
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  • 14
    Electronic Resource
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    BOOK REVIEWS (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Book reviewed in this article:COMMITTEE ON HERBAGE SEED SUPPLIES (UK). Report of the Committee on herbage seed supplies.WATKINS, P. Grass and the dairy cow.ARNON, I. Organisation and administration of agricultural research.HARRISON, C. M. (Ed.) Forage economics-quality. Papers presented at the Forage Economics Symposium and the Forage Quality Evaluation Symposium co-sponsored hy the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America at the annual meetings of the three societies in Washington, D.C., November, 1967.WRIGLEY, G. Tropical agriculture: the development of productiou.WILSON, B. (Ed.) Pasture improvements in Australia.JERMY, A. C.; TUTIN, T. G. British sedges. A handbook to the species ofCarexfonnd growing in the British Isles.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1969.tb01093.x
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  • 15
    Electronic Resource
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    THE DETERMINATION OF RESISTANCE TO VERTICILLIUM WILT (V. ALBO-ATRUM) IN LUCERNE (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: A simple test is described for screening lucerne seedlings for resistance to Verticillium wilt. The test is sufficiently precise to distinguish the most resistant plants within a population possessing a fairly high level of resistance. Some results are presented illustrating the progress in breeding for resistance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1969.tb01074.x
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  • 16
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    THE FREQUENCY AND SEVERITY OF DEFOLIATION OF INDIVIDUAL TILLERS IN SET-STOCKED SWARDS (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Individual tillers of S23 ryegrass, in three paddocks set-stocked with sheep at widely differing grazing pressures, were marked and studied from 11 July to 19 August, 1966, and observations were made on the frequency and severity of grazing.The uprooting of tillers, and the destruction of others, were major sources of loss of records. It was found that an acceptable measure of the frequency of defoliation could be made by recording three times a week. In a subsidiary experiment it was shown that repeated handling did not affect the DM yield, the number of tillers or the length of green leaf (G.L.L.) of single plants.Despite the extreme differences in grazing pressure, there were no significant differences between paddocks in the daily increase in the G.L.L. of tillers which were not grazed during a short period of intensive recording. In all three paddocks the sheep tended to graze the tillers with the greatest G.L.L. at any one time, and there was evidence of patchy grazing only at the lowest grazing pressure.An increase in grazing pressure resulted in increases in both the frequency and severity of defoliation. Comparisons were made between the product of the frequency X severity of defoliation of individual tillers, and the stocking rate, grazing pressure and herbage consumption on the three paddocks.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1969.tb01073.x
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  • 17
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    SOURCES OF VARIATION IN THE IN VITRO DIGESTIBILITY OF TROPICAL GRASSES (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The in vitro DM digestibility of four tropical pasture species, Cenchrus ciliaris, Chloris gayana, Digitaria spp., Setaria spp. and one temperate grass, Lolium perenne, were studied, using the method described by Tilley and Terry (13). In vitro digestibility was affected by fineness of grinding, sample size, pH of original rumen fluid and size of rumen fluid inoculum. Different relations were found between the in vivo and in vitro results for the five species, with a maximum predicted difference of 3–5 digestibility units.It was considered that the in vivo digestibility of tropical grasses could be accurately predicted by this method, provided that the procedure was standardized and samples of known in vivo digestibility similar to those being tested are included in each run.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1969.tb01076.x
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  • 18
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    THE RELATIONSHIP BETWEEN TOTAL N INPUT AND YIELD OF CUT GRASS SWARDS (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The response of clover-free grass swards to fertilizer N when cut repeatedly at grazing and silage stages of growth was measured in four experiments at North Wyke. There was variation between years in the yield obtained at a given fertilizer N rate (Fn) and this was attributable to differences in soil-N supply. By estimating soil-N supply from the N-yield of the non-fertilized plots (Zn), total N inputs (Tn) were assessed. Over a number of reported experiments it was found that grass-N yield (Gn) was related to Tn by the equation Gn=0.57 Tn, where Tn=Fn+l.7 Zn. The level of grass-DM yield depended on stage of growth at cutting, as well as on total N supply. These results, and others examined from the literature, suggest that while total N input is the main determinant of grass-DM yield, account must be taken of the time available, before defoliation, for the N taken up to be utilized in DM production. The use of Tn values has allowed the collating of N responses obtained over a range of sites, seasons and workers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1969.tb01051.x
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  • 19
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    THE HERBAGE CONSUMPTION AND MILK PRODUCTION OF COWS GRAZING S24 RYEGRASS AND S37 COCKSFOOT (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Pure stands of S24 ryegrass and S37 cocksfoot were grazed by groups of 6–8 cows for 5 periods spread over 3 years. Three periods were in the spring and two in the summer. The ryegrass was 4–5 percentage units more digestible than the cocksfoot and generally contained more soluble carbohydrate. In the spring periods, the organic-matter intakes and milk yields of the cows were much the same for the two herbage species, but in the summer they were both higher for the ryegrass. There were no important differences in milk composition due to herbage species, or in the liveweight changes of the cows.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1969.tb01052.x
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  • 20
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    THE EFFECTS OF WINTER GRAZING ON SUBSEQUENT PRODUCTION FROM PASTURE (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The eflFects of various systems of winter-grazing management on pasture production in the following spring and summer were studied in four trials in the Pentland Hills, Scotland. Winter grazing reduced the yield of herbage in spring, but growth in May and June was primarily influenced by the level of nitrogen application in spring, irrespective of winter-grazing treatments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1969.tb01060.x
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  • 21
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    AN EVALUATION OF AN ELECTRONIC INSTRUMENT FOR PASTURE YIELD ESTIMATION (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
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    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: In situations where yield is variable but in which it is not desirable to take too large a cut sample, e.g. on grazed plots, the pasture-yield estimator can be used to improve the accuracy of yield estimation. An outline of the theory and examples of the use of the method are given.
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    URL: http://dx.doi.org/10.1111/j.1365-2494.1969.tb01064.x
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  • 22
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    PRESIDENTIAL ADDRESS (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
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    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1969.tb01035.x
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  • 23
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    LOSSES IN THE NUTRITIVE VALUE OF HEAVILY-WILTED HERBAGE ENSILED IN EVACUATED AND NON-EVACUATED POLYTHENE CONTAINERS (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: A conservation experiment is described in which the losses entailed in ensiling heavily-wilted herbage of 37–43% dry-matter content either by complete sealing in polythene alone, or by complete sealing followed by evacuation of air, were investigated.The metabolizable energy values of the grass and silages were determined, and the silage volatile-acids fraction investigated by gas chromatography. The results indicate that there are no significant fermentation differences between the two types of silage. The mean dry-matter loss for the sealed, unevacuated silos was 6.5% and for the evacuated silos 7.8%. These losses, and the individual crude- and digestible-nutrient losses, are discussed in relation to other published work.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1969.tb01038.x
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    A HISTORY OF THE INTRODUCTION OF TIMOTHY AND COCKSFOOT INTO ALTERNATE HUSBANDRY IN BRITAIN (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The first recorded sowing of American timothy seed in England was in 1743, but the event was otherwise without significance since nothing further was heard of this sowing. The stimulation of interest in timothy began with the sowing by Bartholomew Rocque in the late summer of 1763 of the seed received by the London Society of Arts from America. There was during the first years some confusion regarding its vegetative characters, and also in recognizing the difference between the flowering heads of timothy and those of meadow foxtail (Alopecurus pratensis). A hindrance to progress in the use of timothy arose, without doubt, from lack of experience, and lack of suitable implements to provide the fine, firm, clean seed-bed required. Midsummer sowing may have contributed to failure, for timothy establishes itself best in a moist soil. Timothy seems to have maintained a rather modest place during the 19th and early 20th centuries. The first real progress was made after 1920 when the agronomic potential of the valuable material among our indigenous populations of grasses was appreciated and developed into a number of new cultivars adapted to current needs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1969.tb01042.x
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  • 25
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    A HISTORY OF THE INTRODUCTION OF TIMOTHY AND COCKSFOOT INTO ALTERNATE HUSBANDRY IN BRITAIN (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The seed of cocksfoot (Dactylis glomerata) was first sown as such in England by Bartholomew Rocque. It initially received little publicity, and did not induce the same spate of writing as timothy (Phlewn pratense). The first seed appears to have come from America simultaneously with timothy, although cocksfoot was not at the time a species of much significance there. Yet in England it attained a more secure place, probably because its cultural requirements were less demanding than those of timothy. Its agronomic characteristics were however a frequent subject of discussion and controversy. Before the end of the nineteenth century seed was being imported from Denmark, America and New Zealand. During the second quarter of the twentieth century breeders began exploiting the great variation in plant type and performance to be found among indigenous populations. This work and that of breeders abroad made many cultivars, with different agronomic characteristics, available to farmers. As a result, by means of leys and ‘self’ stands, it is possible to produce fresh herbage over a much extended growing season.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1969.tb01063.x
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  • 26
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    THE USE OF CATTLE WITH OESOPHAGEAL FISTULAE IN GRASSLAND EXPERIMENTS (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Oesophageal-fistulated calves and cattle were used in various experiments during 1963 to 1966; results for 1966 are reported.The method of inserting the fistula, the routine care of the animals and the methods of sampling through the fistula, are described.Individual stall-feeding experiments in 1966 gave recovery values of 99.7% for herbage extruded through the fistulae, in relation to herbage eaten. The in vitro organic-matter digestibility of the grass offered and of the extrusa samples were identical. The digestibility of the grass fed in these experiments was high, but was comparable with that of herbage used in the grazing experiments reported. Grazing studies on grass/white clover pastures are reported. The digestibility was determined on all samples and they were separated into various plant fractions. Results obtained were compared with herbage samples cut at the same time. In most cases the digestibility and % N of the extrusa sample was higher than that of the corresponding herbage sample. The quantity of dead material present increased, and more was eaten, as the season advanced; it was of low digestibility. Results of intake studies with grazing animals are presented and the use of oesophagea-istulated cattle as an aid in such studies is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1969.tb01036.x
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  • 27
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    HARVESTING S352 TIMOTHY FOR SEED (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: On the basis of the most commonly used criteria for determining ripeness in grass seeds (involving a continuous examination of certain physical properties) the rip-o-cut stage was reached in S352 timothy 31–35 days after peak anthesis. The attainment of a moisture level just below 40% wet basis (excluding precipitation), which corresponded with the same stage of seed maturation, appears to be a further practical ripeness indicator in this variety.In view of initial dormancy and the susceptibility of the seeds to mechanical injury, the indirect- rather than the direct-combining method of harvest is recommended.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1969.tb01037.x
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  • 28
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    THE USE OF THE IN VITRO TECHNIQUE IN THE DETERMINATION OF THE DIGESTIBILITY OF GRASS/LEGUME MIXTURES (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The in vitro dry-matter digestibility was determined of two samples of Digitaria decumbens, one sample of Medicago sativa, and one sample of Trifolium repens and nine mixtures prepared from these samples.When the results were compared with in vivo digestibilities the standard errors of the regressions for the three combinations of legume, grass and legume/grass mixtures were ±0.6, ±0.6 and ±1.5 percentage units, respectively.It is considered that in vivo digestibility of mixtures of grasses and legumes can be estimated by the in vitro technique, provided that suitable grass and legume standards are included.
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    URL: http://dx.doi.org/10.1111/j.1365-2494.1969.tb01084.x
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  • 29
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    THE GENERAL PATTERN IN SILAGE FERMENTATION IN TWO SUBTROPICAL GRASSES (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Three sets of previously-published experiments have been re-analysed by numerical methods intended for the elucidation of pattern in sequential data. The results suggest that for Setaria sphacelata cv. Nandi and Chloris gayana cv. Samford Rhodes the stable terminal silage to be expected under subtropical conditions is not the high lactic-acid silage of temperate regions, but a silage with a relatively high proportion of acetic acid. Lactic-acid silage is formed, but usually behaves as though in a transitional phase. However, silage made from mature Setaria can be maintained in the lactic-acid phase by the addition of high percentages of sugar. The silage fermentation can sometimes be retarded, or deflected into an undesirable path for reasons that are not understood.The above patterns suggest three hypotheses for more fundamental investigation. First, since acetic-acid silage can be expected under most subtropical conditions, its properties require careful investigation. Secondly, relatively young Setaria may be regarded as a source of acetic-acid silage, but the optimum amount of sugar to be added for ensiling more mature grass needs investigation. Thirdly there is an urgent need to investigate the causes of retardation of fermentation, and of its deflection into an undesirable path, because until these causes are understood, the outcome of ensilage will remain uncertain.
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    URL: http://dx.doi.org/10.1111/j.1365-2494.1969.tb01088.x
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  • 30
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    THE USE OF LIVEWEIGHT-GAIN TRIALS FOR PASTURE EVALUATION IN THE TROPICS (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: An experiment is described in which liveweight gains were measured from two grass/legume pastures using small East African Zebu animals and also progeny of small East African Zebu cows crossed with Bos taurus bulls. Significantly higher production was obtained from cross-bred stock, which averaged 706 lb liveweight gain at per annum (791 kg/ha per annum), compared with 509 lb liveweight gain/ac per annum (571 kg/ha per annum) from Zebu stock, indicating that pasture management had advanced beyond the genetic potential of the local Zebu stock. The problems of designing, conducting and interpreting the results of such grazing trials are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1969.tb01091.x
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    THE ASSESSMENT OF THE NUTRITIVE VALUE OF SILAGE BY DETERMINATION OF IN VITRO DIGESTIBILITY ON HOMOGENATES PREPARED FROM FRESH UNDRIED SILAGE (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: A report is presented on studies on the relationship between in vitro digestibility of 18 silage samples and their in vivo digestibilities. Various analytical techniques are compared and the method adopted, on grounds of suitability for routine operation and accuracy of prediction of in vivo data, is based on analysis of homogenates of fresh silage. The homogenates, sufficiently uniform to permit of volumetric subsampling at acceptable error levels, are prepared in a new design of homogenizer. The impact of the % dry matter of the silage, as fed, on the accuracy of in vitrol in vivo relationships is considered and a bivariate regression plane is proposed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1969.tb01069.x
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  • 32
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    COMPARATIVE FEEDING VALUE OF SILAGES MADE FROM WILTED AND UNWILTED GRASS AND GRASS/CLOVER HERBAGE (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Silage was made from wilted and unwilted grass in May 1965, 1966 and 1967. The silage was made in sealed silos, but these were not evacuated and additives were not used.The silages were fed as follows: in 1965 to milking dairy cows and 1-year-old beef steers; in 1966 to steers coming into the experiment at 3, 9 and 15 months of age; in 1967 to weaned steer calves, with or without rolled barley (1 or 2 kg/head per day). In all years the silages were of high in vivo digestibility. The intake of wilted silage was higher than that of unwilted silage. There was no significant difference between the milk yields of cows fed on wilted and unwilted silage only. Liveweight gains were higher with wilted silage in 1965 and 1966, but not in 1967. In 1966 gains increased with age of animal and in 1967 gains were higher at successively higher levels of concentrate feeding.
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  • 33
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    THE DIGESTIBILITY OF STRUCTURAL CARBOHYDRATES OF GRASSES BY RUMEN MICRO-ORGANISMS IN VITRO (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: In vitro digestion of grass samples has shown that the amount of digestible cellulose, hexosan or pentosan is not greatly affected by species or by stage of maturity. A survey of published data on crude fibre and cellulose digestibility has confirmed these findings. Marked differences between grasses and legumes were observed. The rate of digestion has also been shown to be independent of the total amount of structural material present. The relevance of these observations to the selection of herbage varieties with greater intake by ruminants is discussed.
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    URL: http://dx.doi.org/10.1111/j.1365-2494.1969.tb01075.x
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  • 34
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    THE POTENTIAL OF LOTUS spp. FOR HILL LAND IN WALES (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Thirty-four introductions of Lotus corniculatus and L. uliginosus, obtained from Europe, North America and New Zealand, were grown in plots with Aberystwyth S23 ryegrass at three centres in Wales (230–400 m a. s. 1.) to assess their potential as legumes for poor acid hill soils. The control white clover varieties were generally successful in these difficult conditions, whereas all the Lotus introductions were poor in two experiments and in the third experiment gave way to volunteer white clover by the third harvest year. These results indicate that none of the numerous Lotus varieties tested would be a useful addition to pasture seeds mixtures for hill lands in Wales.
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    URL: http://dx.doi.org/10.1111/j.1365-2494.1969.tb01079.x
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  • 35
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    A COMPARISON OF THE HERBAGE YIELD OF ITALIAN RYEGRASS AND TALL FESCUE MIXTURES IN THE SECOND AND THIRD YEAR AFTER SOWING (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The annual yield of tall fescue was higher than that of Italian ryegrass in the third year after sowing, but the total yield of herbage from grass plus clover swards was similar.In both the second and third year after sowing, the yield of herbage in the spring grazing was higher when fescue was used as the sown grass. The method of establishment of both tall fescue and Italian ryegrass affected the total and seasonal yield in the second and third year after sowing, but the magnitude of these effects was not nearly as marked as it was earlier in the life of the leys. In the second year after sowing, swards of both Italian ryegrass and tall fescue had a higher yield of total herbage and of white clover, and a lower ingress of unsown species, when established without a cover crop and grazed frequently in the year of sowing.The inclusion of red clover did not increase total yield of DM in the second and third year after sowing, and it slightly decreased the yield of the tall fescue mixture in the third year following sowing when N was applied. S170 tall fescue was readily grazed by sheep in spring and autumn.The apparent recovery of applied N varied with the mixture sown, and the management given during establishment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1969.tb01054.x
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    A COMPARISON OF SILAGE MADE IN POLYETHYLENE CONTAINERS WITH AND WITHOUT THE REMOVAL OF AIR BY EVACUATION (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The effect of partial evacuation of air from polyethylene containers, at the time of sealing, on the chemical composition and nutritive value of silage was determined. Four containers of 500-kg capacity were filled with herbage harvested from each of four swards, namely, S170 tall fescue, Syn I tall fescue, Tetila Tetrone Italian ryegrass and an S24 perennial ryegrass/S100 white-clover mixture. All the containers were sealed immediately after filling and half of them were evacuated. The silages resulting from these treatments were offered ad lib. to store sheep and the intake and digestibility of the dry matter determined. The evacuation of the silos had no significant effect upon the chemical composition of the silage produced. The intake and digestibility of the dry matter in the silages were not significantly influenced by evacuation.
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    URL: http://dx.doi.org/10.1111/j.1365-2494.1969.tb01055.x
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    FORAGE CONSERVATION IN THE TROPICS (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Under arid tropical conditions the natural grazing provides less than maintenance requirements for 8–9 months of the year. Conservation of natural or sown herbage, either as hay or silage, should be discouraged because of the low nutritive value of the product, and the unfavourable weather usually prevailing during conservation. Of the forage crops, cereal/legume mixtures are the most suitable for ensilage.
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    URL: http://dx.doi.org/10.1111/j.1365-2494.1969.tb01062.x
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    PRODUCTIVITY OF TROPICAL PASTURES (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: A 60-cow dairy herd was pastured throughout one year on unfertilized Guineagrass pastures in the humid tropical environment of Turrialba, Costa Rica. During part of this time, the producing herd was followed by dry cows in the rotation. Information was collected on monthly grazing pressure, forage digestibility and consumption, and milk yields. The average number of animal units (375 kg) over the year amounted to 1.06/ha. Forage consumption varied from 2.27–3.45 kg DM/ 100 kg liveweight, and consisted of 75% Guinea grass in the mixed pasture. Digestibility varied from 47.9–65.0%. Low consumption and digestibility coincided with the short drier season. Efficiency of DM conversion was about 13% with one high and one low value, interpreted as use and accumulation, respectively, of body reserves during those periods. Calculations of the N balance in Guineagrass pastures are given.
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    URL: http://dx.doi.org/10.1111/j.1365-2494.1969.tb01065.x
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  • 39
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    THE EFFECT OF FERTILIZER NITROGEN ON SILAGE FERMENTATION (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Direct-cut grass which has been heavily fertilized often produces silage with a poor fermentation. An investigation was carried out to study the effect of rate and timing of N applications to herbage intended for direct-cut silage. A small but consistent increase in silage pH was recorded after high levels of N were applied 7–8 weeks before cutting. The application of additional N fertilizer 10–14 days before cutting the sward had an adverse effect on silage fermentation. Changes in herbage composition following different levels of applied N are outlined.
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    URL: http://dx.doi.org/10.1111/j.1365-2494.1969.tb01039.x
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  • 40
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    FERTILE TILLER PRODUCTION AND SEED YIELD IN MEADOW FESCUE (FESTUCA PRATENSIS L.) (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The effect of defoliation and date of nitrogen application in the spring to seed crops of meadow fescue, S215 and S53, were compared in two harvest years, in drills spaced at 18 in. S215 tillers were generally more robust than S53 tillers, and S215 produced a higher number of fertile shoots as the result of a higher conversion rate of over wintering to fertile tillers. N applied early and absence of defoliation gave the highest ratio of seed heads to over wintering tillers.Seed- and straw-yields were depressed by April and May defoliations; May cutting had a particularly drastic effect on both varieties. S53 yields in all treatments were generally inferior to those of the hay variety, S215.Head lengths and spikelet numbers were higher and 1000-seed weight lower in S53 than in S215.
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    URL: http://dx.doi.org/10.1111/j.1365-2494.1969.tb01044.x
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  • 41
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    PRODUCTIVITY OF TROPICAL PASTURES (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: A 50-animal herd of dairy cows was pastured throughout one year on fertilized Pangola grass pastures in the humid tropical environment of Turrialba, Costa Rica. Information was collected on monthly grazing pressure, forage consumption and digestibility and milk production. The average number of animal units (375 kg) over the year was 2.57/ha. Total milk produced was 6014 kg/ha. Forage consumption varied from 1.81–3.60 kg DM per 100 kg liveweight, with two periods of low consumption coinciding with the flowering period of Pangola grass and with a drier season. Digestibility fluctuated from 50.3–65.7% and followed the same pattern. Calculations were made of the efficiency of DM conversion, which was around 12%, with two higher values for the periods of stress, interpreted as utilization of body reserves. Calculations of the nitrogen balance of Pangola pastures are also presented.
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    SEISMIC REFRACTION MEASUREMENTS IN THE BALTIC SEA (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 17 (1969), S. 0 
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    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: Seismic refraction measurements were made in two areas of the Baltic Sea in June 1967. The refraction data were obtained in the course of the transmission measurements program of Operation MILOC BALTIC 67.Three profile pairs were obtained, two in the area south of Öland Island, Sweden, the third to the east, north of the peninsula of Hel, Poland. The water depths vary from 60 to 90 meters between the areas.The receiving positions for the two profiles south of Oland Island are only 46 km apart but the structures differ markedly. The northern section, only 500 m thick, shows a rather thin sedimentary cover above 350 m of 3.7 km/sec material that in turn overlies 5.6 - 5.9 km/sec velocity material. The southern section, almost 2 km thick, has an equivalent amount of low velocity material, and a layer about 1 km thick having velocity 4.8 km/sec that overlies 6.0 km/sec velocity material. The eastern profile shows high velocity material, 5.6 km/sec, at 2.5 km depth.Correlation of the layers determined by seismic refraction with nearby geology suggests that the structural change south of Öland Island may represent the boundary of the Sarmatian Shield in this region.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2478.1969.tb02070.x
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    A POSSIBLE WAY OF TRACING GROUNDWATER FLOWS IN KARST (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 17 (1969), S. 0 
    Details
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: In designing as well as in the construction of hydro-electric power plants and water-supply projects in karst, the knowledge of the location of groundwater flows is invaluable. Attempts made so far in this direction have not produced the desired results and all the methods known so far have shown to be more or less ineffective, especially with respect to deep-seated underground flows.An interesting suggestion on the possible determination of the groundwater flow location by using a specific geophysical prospecting procedure is based on the studies and knowledge of groundwater flows in the karstland of Yugoslavia. The procedure is as follows: a time-bomb thrown down a swallow-hole travels down to the groundwater flow and explodes at a predetermined moment. Elastic waves generated by the explosion propagate reaching the surface, where they are detected by properly arranged geophones that are connected with a standard seismic apparatus. By a specific graphical or arithmetical method the coordinates of the epicentre and hypocentre of the underground explosion can be worked out, and thus the location of the groundwater flow determined. By successive repetition of the experiment, i.e. by different time activation of underground explosion of the time-bomb, the location of the groundwater flow can be defined over longer paths.The success of the experiment depends upon a number of factors all of which must be met. If only one of them is overlooked, the experiment will not succeed. All this calls for great care both in preliminary work and in the course of the experiment. Substantial funds invested in and considerable time required in executing the experiment are multiply recompensed by the success of the experiment. The information obtained about the location of groundwater flows will directly affect the maximum operating pool adopted for hydro-electric power projects and the most favourable point in cutting off groundwater flows and bringing them to the surface for water-supply purposes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2478.1969.tb01986.x
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    TRANSIENTS AND FIELD BEHAVIOUR IN INDUCED POLARIZATION (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 17 (1969), S. 0 
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    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: This paper deals with electromagnetic fields in the so called “Transient Induced Polarization Technique”. Field equations are integrated in the case of a polarizable sphere inbedded in a sterile overburden. The existence of a remanent polarization vector P which slowly decays once the charging current has been cut off is taken as the initial condition. When the surface between the air and overburden is (as a first step) disregarded, the Laplace transform of the EM fields is given. The integral of the electric field (which is fairly often the result of prospection work) is independent of the various time constants related to electrochemical processes, but it stands as a good measurement of the total electrostatic dipole created by the charging current.We investigate the geometrical circumstances that can bring negative values of I.P. signal. Such negative values can be found in two cases: 1. The discharge currents are. distorted by the ground surface. 2. The I.P. signal is picked up by electrodes inside the polarizable material.The last part is dedicated to an account of experimental work performed on models and of an actual case history.The mathematical derivations are included in an appendix.
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    URL: http://dx.doi.org/10.1111/j.1365-2478.1969.tb01991.x
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    CONDENSED REPORT BY THE SECRETARY-TREASURER AND THE EDITOR FOR THE YEAR 1968 (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 17 (1969), S. 0 
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    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2478.1969.tb02081.x
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    IDENTIFICATION OF SEA-FLOOR SEDIMENTS USING UNDERWAY ACOUSTICS (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 17 (1969), S. 0 
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    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: Laboratory measurements, and a few in situ observations, show that saturated marine sediments have interdependent mechanical and acoustical properties, Acoustically, of particular importance are the acoustic impedance, velocity of sound and the sound attenuation coefficient of the sediment. The first two properties can be measured relatively easily from a surface ship; the measurement of attenuation however, is more problematical. It is suggested that this can be achieved by a quantitative treatment of the acoustic data collected during routine sub-bottom profiling over a variable thickness of superficial sediments. In the assessment of four different sediment locations in the Irish Sea it was found that quantitative treatment of the acoustic signals yielded both a value of the attenuation coefficient as well as a measure of the frequency dependence of the attenuation. In addition a statistical analysis of the signal intensities seems to provide an indication of the relative roughness of the bottom and sub-bottom interfaces. From the wide range of information provided the mechanical properties of the sea-floor sediment may be estimated.
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    URL: http://dx.doi.org/10.1111/j.1365-2478.1969.tb02084.x
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    BOOK REVIEW (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 17 (1969), S. 0 
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    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: Book reviewed in this article:Courant-Hilbert, Methoden der mathematischen Physik I, Heidelberger Taschen-bucher Vol. 30
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    URL: http://dx.doi.org/10.1111/j.1365-2478.1969.tb02090.x
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    CONTRIBUTION DU TRAITEMENT NUMERIQUE A L'ANALYSE ET A INTERPRETATION DES ENREGISTREMENTS REFRACTION (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 17 (1969), S. 0 
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    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: The tools used in digital processsing have received little application, to date, to refraction seismic.It seems however that some problems encountered in the analysis of refraction records could be solved through techniques which are of common use in processing of reflection seismic data (correlation, stacking, f and k filtering).The experiments made with some of these techniques revealed the possibility of a more complete refraction record analysis, allowing the study of later arrivals.The interpretation of these records could also, to a fairly large extent, be automated by means of digital processing.While recording, some care ought to be taken to allow identification and interpretation by digital processing of as many events as possible. However, the results shown here have been obtained from fairly old analog records, for which no particular care had been taken, which makes it possible to complete and revise the interpretation of previous studies using the same processing techniques.Long line refraction shooting is justified for marine surveys in some areas, particularly where reflection is disturbed by singing; improvements in analysis and interpretation would therefore prove very useful for a faster and more thorough interpretation.
    Type of Medium: Electronic Resource
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    DEFORMATION OF SEISMIC WAVELETS BY THIN LAYERS AND LAYERED BOUNDARIES (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 17 (1969), S. 0 
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    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: Using plane wave theory and assuming a given input wavelet the shape of the reflected (or transmitted) wavelet from a layered boundary is derived. Several types of boundaries are considered, among them the weathered layer and a wedge shaped intermediate layer. Different angles of incidence and all internal multiples are taken into account. The examples shown in the figures can be used for a direct comparison between theoretical and observed shapes of reflected (or transmitted) wavelets from special boundaries.
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    URL: http://dx.doi.org/10.1111/j.1365-2478.1969.tb02069.x
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    ANNOUNCEMENT (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 17 (1969), S. 0 
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    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
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    URL: http://dx.doi.org/10.1111/j.1365-2478.1969.tb02074.x
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    GEOELECTRICAL INVESTIGATIONS IN EAST AFGHANISTAN (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 17 (1969), S. 0 
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    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: During the years from 1965 until 1967, a German/Afghan team carried out a number of geoelectrical resistivity measurements according to the “Four-Point-Method” within the framework of Technical Assistance to Afghanistan.On two selected objects of investigation, i.e. Kabul (69°10 E, 34°30′N) and Zarkašan (67°40′E, 32° 54.5′N), the possibilities and limits of the resistivity method in the exploration of useful groundwater resources, of the geological structure, and in the treatment of problems pertaining to mineral deposits in Afghanistan are demonstrated. In connection with geological mapping these geophysical investigations provided certain conceptions on the structure and the stratigraphy of the intramontane basins in the region south of the Hindukush mountains. Field interpretations are checked by boreholes and by computed model graphs.
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    THIRTY FIRST MEETING OF THE EUROPEAN ASSOCIATION OF EXPLORATION GEOPHYSICISTS, HELD IN VENICE, 21st-23rd MAY, 1969 (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 17 (1969), S. 0 
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    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2478.1969.tb02080.x
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    THE DELINEATION OF THE BEDROCK CONFIGURATION OF PART OF PORT JACKSON, NEW SOUTH WALES, WITH A BOOMER SYSTEM (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 17 (1969), S. 0 
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    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: A high resolution Boomer system was used to investigate the bedrock configuration of part of Port Jackson, New South Wales. The continuous reflection profiling technique was successful in delineating a channel incised in bedrock under a thickness of up to 60 m. of unconsolidated sediment covered by up to 20 m. of water.
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    AERIAL RADIOMETRY OF EL ALAMEIN OILFIELD, EGYPT, U.A.R. (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 17 (1969), S. 0 
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    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: Total gamma airborne radiometric survey of El Alamein area in the Western Desert has been carried out by the Atomic Energy Establishment. The flight lines are directed north-south with 500 m spacing, while the ground clearance is about 50 m. Superimposition of the radioactivity profiles over El Alamein Oilfield shows a general decrease of gamma radiation in the central part of the structure framed by zones of relatively higher values. The aerial radioactivity of El Alamein Oilfield is described and it is correlated with some reported radiometric characteristics of other oil bearing structures. The distribution of aeroradiometric measurements over El Alamein Oilfield and its environment has been found to be lognormal.
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    THE PROFITABLE USE OF GRASSLAND IN MILK PRODUCTION (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
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    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The most profitable use of grass in feeding a dairy herd is considered. Provided that the quality of the grass and grass products is sufficiently high for it to be used for part of the production ration, it is possible either to maintain a larger herd by buying concentrates, or to keep a smaller herd, feed less concentrates and use part of the grass for production. The potential herd size will depend both on the level of concentrate feeding and on the milk yield of the herd.When account is taken of the extra costs involved with larger herds (labour, capital charges and some variable costs) the optimum system depends on the level of milk yield. For herds yielding below 900 gallons average, the most profitable system is that which obtains the maximum production from grass. With herds of over 1000 gallons average it is more profitable to use concentrates for the production ration and to keep the maximum number of cows.
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    MANAGEMENT OF ARID RANGELAND IN KENYA (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
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    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The characteristics and management requirements of the arid zone are described, as an introduction to the methods of development now being adopted in Kenya. The future intensification of commercial utilization is discussed.
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    URL: http://dx.doi.org/10.1111/j.1365-2494.1969.tb01061.x
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    UPLAND GRASS PRODUCTION IN NORTH-EAST SCOTLAND IN RELATION TO SOIL AND SITE CONDITIONS (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
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    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: An experiment involving 24 grassland sites was carried out to measure the influence of a large number of variables on upland yields between 900 and 1450 ft above sea level in western Aberdeenshire. The grass was harvested in mid-July and at the end of October 1966. Few factors were significant in the first harvest yields. In the second harvest yields, aspect and soil parent material were both significant at the 1% level, and available soil phosphate at the 5% level. Total yields (DM) for the growing season were correlated with parent material (2% level), with available soil P (1% level) and with the P and K content of the leaf (1% and 5% levels). Yields were also correlated with sward age (5% level) and sward condition (1% level). A number of variables were highly correlated with sward age and condition, including the leaf content (second harvest) of K, P and crude protein (0.1%, 1% and 1% levels).The highest yield was 4700 kg/ha/year and the average yield 2585 kg/ha/year, but the results showed that the average could be substantially increased by good management, especially by P fertilizer. The results confirmed that there was no marked fall-off in yields with increasing altitude (r=0.066, 0.194 and 0.112) and there appeared scope for reclamation on suitable sites at higher elevations.
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    RESPONSE OF CREEPING RED FESCUE SEED FIELDS TO AFTERMATH GRAZING BY BEEF CATTLE (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
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    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Autumn grazing of creeping red fescue seed fields at moderate stocking rates produced excellent animal gains, while only slightly reducing the subsequent seed yields. Under autumn grazing of moderate intensity (3.7 animal units/ha) steers made gains of over 1 kg/day while seed yields were reduced by 8%. Under grazing of heavy intensity (6.2 animal units/ha) animal gains were almost 1 kg/day, but seed yields were reduced by 16%.A spring-grazing period reduced seed yields by 35% and was too short to provide animal gains. Removal of the aftermath as hay improved seed yields slightly, particularly in the second and third harvest years.A conversion of TDN to body gain of 5.5:1 indicated that the nutritive quality of the aftermath was adequate.
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    THE INTRODUCTION OF PANGOLA GRASS INTO THE CARIBBEAN ISLANDS (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
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    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The origin and introduction of Pangola grass Digitaria decumbens (Stent) into the Caribbean islands is described. The rapid spread of this species in cultivation throughout the regions is ascribed to four characteristics which coincided so closely with the economic and technical needs of the region as to override the inherent disadvantages of this grass. Its outstanding characteristics are ease of establishment, vigour, adaptability, palatability and resistance to grazing. The agronomic and nutritional characteristics and the productive potential of Pangola grass are com-pared with other forage species cultivated in the region and with a temperate grass species. These characteristics are discussed in the context of the introduction and evaluation of forage species and the intensification of output from forage crops.
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    BOOK REVIEWS (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
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    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Book reviewed in this article:GARDNER, H. W. A survey of the agriculture of Hertfordshire.APPADURAI, R. R. Grassland farming in Ceylon.MACHLIS, L.; BRIGGS, W. R.; PARK, R. B. Annual review of plant physiology.DILLON, J. L. The analysis of response in crop and livestock production.BLACK, C. A. Soil-plant relationships.WHYTE, R. O. Grasslands of the monsoon.
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    THE USE OF LIVEWEIGHT-GAIN TRIALS FOR PASTURE EVALUATION IN THE TROPICS (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
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    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: A 21-acre grazing trial which ran continuously for three years to evaluate grass and grass/legume pasture with and without inorganic fertilizers is described. Techniques for conducting grazing trials where large treatment differences are expected and the interpretation of results from these trials are discussed. Good practical management of stock and pastures was shown to be necessary in these grazing trials and where it was only possible to establish one true replicate some measure of statistical control was achieved by comparing regression coefficients of cumulative animal production.The results showed that up to 475 1b liveweight gain/acre per annum (532.48 kg/ha) could be obtained from pastures grazed by small East African Zebu steers. The addition of the legumes Stylosanthes gracilis and Centrosema pubescens to grass mixtures gave significant and economic increases in liveweight gain. Grass/legume swards receiving phosphorus and sulphur produced liveweight gains equivalent to the animai production from grass swards receiving 140 1b N/ac per annum (156.94 kg/ha).
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    INFLUENCE OF NITROGENOUS AND PHOSPHATIC FERTILIZERS ON SETARIA SPHACELATA IN SOUTH AFRICA (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
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    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: In an experiment in which three levels of P and five levels of N fertilizer were applied, it was found that at the highest levels of fertilization the hay yields were increased fourfold, the percentage of crude protein was doubled, the crude-protein yield increased sevenfold, and the P uptake increased five times over those of the control. This increased production was mainly a result of the use of N fertilizer, although significant PxN interactions were obtained at the higher levels of N fertilizer. By itself, P fertilizer had little effect on any of the above increased yields. It would appear that very much higher production, especially of CP and P, might be attained, if even higher levels of fertilizer were applied.Basing income on hay yields and expenditure on fertilizer costs, the greatest profit was obtained from the higher levels of fertilization. This applied especially to N fertilizer.
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    A COMPARISON OF SEVEN ADDITIVES USED IN ENSILING HIGH-MOISTURE GRASS/CLOVER PASTURES (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 24 (1969), S. 0 
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    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Four experiments compared seven additives for ensiling high-moisture, leafy grass/clover awards in small tower-silos. The additives were ammonium bisulphate, ammonium monohydrogen phosphate, silotracin, molasses, molassine meal, kylage and protosil 3. In all experiments, silages made with additives were compared with control silages. Apart from molasses, additives had little effect on silage quality: DM and N losses were only slightly reduced by additives. In terms of weight of DM recovered for animal feeding, the additives ranked as follows: molasses and molassine meal 〉 silotracin 〉 ammonium bisulphate, ammonium monohydrogen phosphate, and controls; molasses kylage, protosil 3 and controls.
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    Insecticidal evaluation of two unsaturated alcoholic derivatives of a perchlorinated caged ketone (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 954-955 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
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    Photodecomposition of 1-naphthaleneacetic acid (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 1291-1293 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
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    Metabolism of the acaricide chemical, fenazaflor(5,6-dichloro-1-phenoxycarbonyl-2-trifluoromethylbenzimidazole) in certain mammals, insects, and plants (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 956-966 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
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    Translocation, penetration, and metabolism of O-(4-bromo-2,5-dichlorophenyl)-O,O-dimethylphosphorothioate (bromophos) in tomato plants (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 1017-1020 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
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    Redox state of nicotinamide-adenine dinucleotides in citrus fruit (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 1312-1315 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
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    Enzymic browning and free tyrosine in potatoes as affected by level of treatment with pentachloronitrobenzene (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 1412-1413 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
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    Gas chromatographic determination of erbon and two metabolites in biological materials (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 1171-1173 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
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    URL: http://dx.doi.org/10.1021/jf60166a029
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    Vitamin B6 components in some meats, fish, dairy products, and commercial infant formulas (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 1394-1397 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
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    URL: http://dx.doi.org/10.1021/jf60166a027
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    Fate of pentachlorophenol in cotton (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 1244-1246 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
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    URL: http://dx.doi.org/10.1021/jf60166a034
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    Detection of parathion in plasma by electron capture gas chromatography without prior cleanup (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 1190-1191 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
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    URL: http://dx.doi.org/10.1021/jf60166a040
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    Fate of diazinon in submerged soil. Accumulation of hydrolysis product (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 1192-1195 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
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    URL: http://dx.doi.org/10.1021/jf60166a045
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    Effect of bromine and ultraviolet light on eight pesticides detected with liver esterases of five species (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 1196-1198 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
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    URL: http://dx.doi.org/10.1021/jf60166a046
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    Rapid determination of strontium-90 in tissue, food, biota, and other environmental media by tributyl phosphate (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 1337-1339 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
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    URL: http://dx.doi.org/10.1021/jf60166a012
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    Removal of Gardona and Azodrin from vegetable crops by commercial preparative methods (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 1204-1206 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
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    URL: http://dx.doi.org/10.1021/jf60166a016
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    Distribution of arsenic from poultry litter in broiler chickens, soil, and crops (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 1288-1290 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
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    URL: http://dx.doi.org/10.1021/jf60166a018
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    Determination of Ciodrin from fortified animal tissues by oscillopolarography of its conversion product, acetophenone (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 1160-1163 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jf60166a068
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    Acute oral toxicity of monuron in albino rats fed from weaning on different diets (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 1213-1216 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
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    URL: http://dx.doi.org/10.1021/jf60166a043
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    Extractability of zinc granulated with macronutrient fertilizers in relation to its agronomic effectivemess (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 1272-1275 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jf60166a051
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    Properties and value of 1,1-diureido isobutane (IBDU) as a long-lasting nitrogen fertilizer (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 1269-1271 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
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    URL: http://dx.doi.org/10.1021/jf60166a053
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    Gibberellin in vetch seeds (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 1294-1297 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jf60166a056
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    Translocation and break-down of disodium methanearsonate (DSMA) in coastal bermudagrass (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 1247-1250 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
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    URL: http://dx.doi.org/10.1021/jf60166a063
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    Determination of isopropyl alcohol in solid fish protein concentrate by gas-liquid chromatography (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 34-37 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jf60161a005
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    Identification of a volatile component in soybeans that contributes to the raw bean flavor (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 15-17 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
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    URL: http://dx.doi.org/10.1021/jf60161a006
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    Effect of roasting on the stability of peanut proteins (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 25-28 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
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    URL: http://dx.doi.org/10.1021/jf60161a007
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    Energy metabolites in red and white striated muscles of the pig (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 29-33 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
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    URL: http://dx.doi.org/10.1021/jf60161a009
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    Degradation products from ascorbic acid (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 38-40 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
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    URL: http://dx.doi.org/10.1021/jf60161a008
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    Relation of vegetable color to physical state of the carotenes (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 41-42 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
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    URL: http://dx.doi.org/10.1021/jf60161a011
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    Microdetermination of the drug ingredients, 2-chloro-4-nitrobenzamide, 4'-[(p-nitrophenyl)sulfamoyl]acetanilide, and 4-aminobenzenearsonic acid, in medicated finished feeds (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 51-55 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
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    URL: http://dx.doi.org/10.1021/jf60161a010
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    Thermal degradation of lipids (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 18-21 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
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    URL: http://dx.doi.org/10.1021/jf60161a012
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    Formation of sucrose pyrolysis products (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 22-24 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
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    Gas Chromatographic Determination of Abate using Flame Photometric and Electron-Capture Detectors (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 60-62 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
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    URL: http://dx.doi.org/10.1021/jf60161a601
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    Metabolic Studies with Alar Growth Regulator in the Dairy Cow (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 116-117 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
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    URL: http://dx.doi.org/10.1021/jf60161a613
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    Absorption of Monofluoroacetate-2-14C Ion and Its Translocation in Sugarcane (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 132-134 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
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    URL: http://dx.doi.org/10.1021/jf60161a617
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    Absorption of Monofluoroacetate-2-14C Ion and Its Translocation in Sugarcane (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 131-134 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
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    URL: http://dx.doi.org/10.1021/jf60161a618
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    Efflux of Dichlobenil from Shoots and Roots of Corn (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 135-137 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
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    URL: http://dx.doi.org/10.1021/jf60161a619
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    Epoxidation of Aldrin by Excised Pieces of Plant Tissue (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 143-147 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
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    URL: http://dx.doi.org/10.1021/jf60161a621
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    Relationship of Chemical Classification and Hydrophile-Lipophile Balance of Surfactants to Enhancement of Foliar Uptake of Iron (1969)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 17 (1969), S. 148-152 
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    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jf60161a622
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