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  • Articles  (18)
  • Wheat  (18)
  • Springer  (18)
  • American Chemical Society
  • Cambridge University Press
  • International Union of Crystallography (IUCr)
  • 1985-1989  (9)
  • 1980-1984  (8)
  • 1975-1979  (1)
  • 1970-1974
  • 1955-1959
  • Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition  (18)
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  • Articles  (18)
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  • Springer  (18)
  • American Chemical Society
  • Cambridge University Press
  • International Union of Crystallography (IUCr)
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  • Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition  (18)
  • Biology  (23)
  • Geosciences  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Use of triple-labelled nutrient solution to study the effects of root-infecting fungi on uptake of potassium, calcium and phosphorus by wheat (1982)
    Springer
    Plant and soil 66 (1982), S. 405-410 
    Details
    ISSN: 1573-5036
    Keywords: Gaeumannomyces graminis ; Hydroponics ; Ion uptake ; Radionuclides ; Root pathogens ; Wheat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Triple-labelled nutrient solution was used to compare the effects of seven root-infecting fungi on uptake of K, Ca and P by wheat. Plants grown in sand or hydroponic culture were transferred to solutions that contained42K,45Ca and32P for 24 h, then dried, ashed and digested in 6M HCl. To distinguish radiation emitted by42K,45Ca and32P plant digests were counted on two channels of a liquid scintillation counter immediately and 7 days later, after the decay of42K radiation. Plants infected byGaeumannomyces graminis took up and translocated less K, Ca and P to their shoots than uninfected plants. Other root-infecting fungi had little effect on uptake of these ions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02183807
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  • 2
    Electronic Resource
    Electronic Resource
    Cycling of amino-nitrogen between shoots and roots in wheat seedlings (1986)
    Springer
    Plant and soil 91 (1986), S. 319-322 
    Details
    ISSN: 1573-5036
    Keywords: Nitrogen cycling ; Nitrogen-15 tracer ; Split root experiments ; Triticum aestivum L. ; Wheat ; Xylem sap
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary One part of a split root system of wheat seedlings received full nutrient solution with15N-nitrate, the other received an identical solution with unlabelled nitrate. Appearance of labelled amino compounds was measured in the xylem sap exuding from roots not supplied directly with15N-nitrate after removal of the15N-nitrate-fed roots. This material indicates cycling of nitrogen from the shoots and through the roots. About 60 per cent of the nitrogen in the xylem appears to be cycling in this way.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02198115
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  • 3
    Electronic Resource
    Electronic Resource
    Crop growth and nitrogen transformations in wheat (Triticum aestivum L.) planted after wetland rice (Oryza sativa L.) (1989)
    Springer
    Biology and fertility of soils 7 (1989), S. 263-268 
    Details
    ISSN: 1432-0789
    Keywords: Dentrification ; Immobilization ; Tillage ; N leaching ; Wheat ; Wetland rice
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary A field study was undertaken to examine the effects of various management strategies on wheat (Triticum aestivum L.) performance and N cycling in an intensively cropped soil. Microplots receiving 100 kg N ha−1 as15NH4 + 15NO3 − at sowing, tillering or stem elongation were compared with unfertilized microplots. Stubble from the previous rice crop was either incorporated, burnt without tillage, burnt then tilled or retained on the surface of untilled soil. Wheat grain yield ranged from 1.5 to 5.1 t ha− and was closely related to N uptake. Plant accumulation of soil N averaged 36 kg N ha−1 (LSD 5% = 10) on stubble-incorporation plots and 54 kg N ha−1 on stubble-retention plots. Fertilizer N accumulation averaged 18 kg N ha−1 (LSD 51% = 6) on stubble-incorporation plots and 50 kg N ha−1 on stubble-retention plots. Tillage had little effect on burnt plots. Delaying N application from sowing until stem elongation increased average fertilizer N uptake from 26 to 39 kg N ha−1 (LSD 5% = 6), but reduced soil N uptake from 50 to 37 kg N ha− (LSD 5% = 10). Immobilization and leaching did not vary greatly between treatments and approximately one-third of the fertilizer was immobilized. Less than 1% of the fertilizer was found below a depth of 300 mm. Incorporating 9 t ha−1 of rice stubble 13 days before wheat sowing reduced net apparent mineralization of native soil N from 37 to 3 kg ha−1 between tillering and maturity. It also increased apparent denitrification of fertilizer N from an average 34 to 53 kg N ha−1 (LSD 5% = 6). N loss occurred over several months, suggesting that denitrification was maintained by continued release of metabolizable carbohydrate from the decaying rice stubble. The results demonstrate that no-till systems increase crop yield and use of both fertilizer and soil N in intensive rice-based rotations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00709659
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  • 4
    Electronic Resource
    Electronic Resource
    Inoculation of field-grown wheat (Triticum aestivum) with Azospirillum spp. in Brazil (1987)
    Springer
    Biology and fertility of soils 4 (1987), S. 37-40 
    Details
    ISSN: 1432-0789
    Keywords: Azospirillum brasilense ; Azospirillum amazonense ; rate reductase ; Inoculation ; Wheat ; Triticum aestivum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Three field experiments with wheat were conducted in 1983, 1984, and 1985 in Terra Roxa soil in Paraná, the major Brazilian wheat-growing region, to study inoculation effects of various strains of Azospirillum brasilense and A. amazonense. In all three experiments inoculation with A. brasilense Sp 245 isolated from surface-sterilized wheat roots in Paraná produced the highest plant dry weights and highest N% in plant tops and grain. Grain yield increases with this strain were up to 31 % but were not significant. The application of 60 or 100 kg N ha−1 to the controls increased N accumulation and produced yields less than inoculation with this strain. Another A. brasilense strain from surface-sterilized wheat roots (Sp 107st) also produced increased N assimilation at the lower N fertilizer level but reduced dry weights at the high N level, while strain Sp 7 + Cd reduced dry weights and N% in the straw at both N levels. The A. amazonense strain isolated from washed roots and a nitrate reductase negative mutant of strain Sp 245 were ineffective. Strains Sp 245 and Sp 107st showed the best establishment within roots while strain Cd established only in the soil.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00280348
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  • 5
    Electronic Resource
    Electronic Resource
    Copper nutrition of wheat in relation to nitrogen and phosphorus fertilization (1982)
    Springer
    Plant and soil 65 (1982), S. 433-436 
    Details
    ISSN: 1573-5036
    Keywords: Copper-nutrition ; Nitrogen ; Phosphorus ; Wheat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary In a pot culture study, copper addition to soil increased the crop yield only in presence of nitrogen. The latter increased the utilization of both native as well as applied copper but more that of applied. It also minimised the adverse effect of applied phosphorus on copper utilization. Phosphorus at the rate 45 ppm had the tendency of decreasing copper uptake by wheat if applied without nitrogen or with its low level.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02375066
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  • 6
    Electronic Resource
    Electronic Resource
    The description of the growth of root systems (1983)
    Springer
    Plant and soil 75 (1983), S. 405-415 
    Details
    ISSN: 1573-5036
    Keywords: Barley ; Growth analysis ; Model ; Root growth ; Wheat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Root development is described by a simple algebraic model which gives the numbers and lengths of root members of different orders in terms of time and a few properties of each order of root member. The model is tested against experimental results for the early growth of the roots of temperate cereals in pots or in liquid culture. The model is then used to simulate root growth and to explain the observed behaviour of four growth measures (relative multiplication rate, relative extension rate, mean extension rate, average root length) used in the growth analysis of root systems. Three principles governing root development emerge from the model and the simulations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02369974
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  • 7
    Electronic Resource
    Electronic Resource
    Response of barley and wheat to phosphorus in the presence of chloride and sulphate salinity (1982)
    Springer
    Plant and soil 66 (1982), S. 233-241 
    Details
    ISSN: 1573-5036
    Keywords: Barley ; Chloride ; Phosphorus ; Salinity ; Sulphate ; Wheat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The study was conducted in a greenhouse and under field conditions. In the greenoouse, barley was grown to maturity in pots on a sandy soil which contained 80 and 120 meq/l of chloride and sulphate dominant salts in its saturation extract, to which 0, 10, 25 and 50 ppm P were added. In the field study, wheat was grown on loamy sand soils having 0, 25, 50 and 75 kg/ha added P levels and irrigated with either Cl- or SO4-dominant saline waters (EC=15−19 mmhos/cm). The results of the greenhouse study indicated that at maturity barley straw and grain yield was significantly increased by 50 ppm of added P both on the non-saline control and the Cl-treatments. However, 25 ppm P was optimal on the SO4-treatments. The Cl content of plants was significantly decreased and S was increased with the increase in the P content of soil. A synergistic relation between the S and P content of barley shoots was observed. In the field study wheat grain yield responded significantly to P applications upto 50 kg/ha level on the Cl-site and there was no response to applied P on the SO4-site, although the former contained more Olsen's P than the latter. The results suggested that P requirement of wheat and barley was greater on Cl- than on SO4-salinity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02183982
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  • 8
    Electronic Resource
    Electronic Resource
    Increased uptake of anions by plants with vesicular-arbuscular mycorrhizas (1983)
    Springer
    Plant and soil 71 (1983), S. 463-467 
    Details
    ISSN: 1573-5036
    Keywords: Anion uptake ; Barley ; Hordeum vulgare ; Mycorrhiza ; Phosphorus ; pH Rhizosphere ; Triticum aestivum ; Wheat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary In two field experiments sown in 1982 to test the effect of vesicular-arbuscular mycorrhizas (VAM) on growth and phosphorus nutrition of (i) spring wheat and spring barley, (ii) winter wheat and winter barley, we measured the concentrations of the major cation (K+, Ca2+, Mg2+ and Na+) and anions (Cl−, SO4 2−, H2PO4 − and NO3 −) in shoot tissue. In all cases the sum of the anion concentrations (ΣA) was increased strongly by mycorrhizal infection but not by P additions, confirming earlier observations2 on spring wheat. The concentration of total cations (ΣA) was generally reduced by P additions, hence P and VAM both reduced the cation excess (ΣC−ΣA) but by different mechanisms. These results suggest that increased uptake of anions by plants with VAM may be a general phenomenom which would have important implications for the elemental composition of crops. The effect may also be manifested by other types of mycorrhizal association.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02182687
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  • 9
    Electronic Resource
    Electronic Resource
    Effect of inoculation ofAzospirillum spp. on nitrogen accumulation by field-grown wheat (1986)
    Springer
    Plant and soil 95 (1986), S. 109-121 
    Details
    ISSN: 1573-5036
    Keywords: Azospirillum amazonense ; A. brasilense ; N NR− mutant ; Wheat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Two experiments were performed to examine the effects of inoculation of field grown wheat with various Azospirillum strains. In the first experiment the soil was sterilized with methyl bromide to reduce the Azospirillum population and15N labelled fertilizer was added to all treatments. Two strains ofAzospirillum brasilense isolated from surface sterilized wheat roots and theA. brasilense type strain Sp7 all produced similar increases in grain yield and N content. From the15N and acetylene reduction data it was apparent that these increases were not due to N2 fixation. In the second experiment performed in the same (unsterilized) soil, twoA. brasilense strains (Sp245, Sp246) and oneA. amazonense strain (Am YTr), all isolated from wheat roots, produced responses of dry matter and N content while the response to the strain Sp7 was much smaller. These data confirm earlier results which indicate that if natural Azospirillum populations in the soil are high (the normal situation under Brazilian conditions), strains which are isolated from wheat roots are better able to produce inoculation responses than strains isolated from other sources. The inoculation of a nitrate reductase negative mutant of the strain Sp245 produced only a very small inoculation response in wheat. This suggests that the much greater inoculation response of the original strain was not due to N2 fixation but to an increased nitrate assimilation due to the nitrate reductase activity of the bacteria in the roots.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02378857
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  • 10
    Electronic Resource
    Electronic Resource
    Modification of the salinity response of wheat by the genome ofElytrigia elongatum (1985)
    Springer
    Plant and soil 83 (1985), S. 327-330 
    Details
    ISSN: 1573-5036
    Keywords: Amphiploid ; Elytrigia ; Genome ; Salinity ; Triticum aestivum ; Wheat ; Wheatgrass
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Triticum aestivum cv. Chinese Spring wheat,Elytrigia elongatum (tall wheatgrass), and theTriticum-Elytrigia amphiploid were grown in complete nutrient culture containing, in addition, 0, 40, 80 and 120 mM NaCl. The 3 genotypes responded quite differently to increasing salinity; the Na concentration of wheat shoots increased in direct proportion to the increase in salinity of the external medium whereas the Elytrigia response was interpreted as showing high affinity for Na at low external Na (40 mM) but comparative exclusion of Na at high salinities (120 mM). In contrast, Na levels of the amphiploid were less than those of either wheat or Elytrigia under both low and high salinities. Thus the amphiploid behaved like wheat at 40 mM NaCl but more like Elytrigia at 120 mM NaCl because Na transport to the amphiploid shoot was restricted over the whole salinity range. The K concentration of the amphiploid shoot at high salinities was significantly greater than the K concentrations of either wheat or Elytrigia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02184304
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