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  • Articles  (14)
  • Rice  (8)
  • Copper  (6)
  • Springer  (14)
  • 1980-1984  (14)
  • 1981  (14)
  • Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition  (14)
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  • Articles  (14)
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Keywords
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  • Springer  (14)
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  • 1980-1984  (14)
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Topic
  • 1
    Electronic Resource
    Electronic Resource
    The effect of nitrogen fertilizer on N2 fixation in the paddy field measured byin situ acetylene reduction assay (1981)
    Springer
    Plant and soil 59 (1981), S. 135-139 
    Details
    ISSN: 1573-5036
    Keywords: Acetylene reduction assay ; Effect of N fertilizer ; N2 fixation ; Rice
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Unfertilized and NPK-fertilized plots in the long term fertility trial at Los Baños, Philippines were used to observe the effect of nitrogen fertilizer on heterotrophic N2-fixing activities in plow layer soil and in association with wetland rice. The activities were measured in the field byin situ acetylene reduction assays. Acetylene reduction activity of the plow layer soil in the paddy field was measured by soil cores. No appreciable difference was found-between fertilized and unfertilized plots.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02183599
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  • 2
    Electronic Resource
    Electronic Resource
    Effect of phosphorus and zinc on the growth and phosphorus, zinc, copper, iron and manganese nutrition of rice (1981)
    Springer
    Plant and soil 59 (1981), S. 415-425 
    Details
    ISSN: 1573-5036
    Keywords: Rice ; Zinc-phosphorus interaction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary A greenhouse experiment was conducted to study the effect of phosphorus and zinc application, in three lowland alluvial rice soils (Haplustalf) on the growth of rice and the concentration of phosphorus, zinc, copper, iron and manganese in shoots and roots. The results showed that application of phosphorus and zinc significantly increased the dry matter yield of shoots, grains and roots. Application of phosphorus caused a decrease in the concentration of zinc, copper, iron and manganese both in shoots and roots. Application of zinc also similarly lowered the concentration of phosphorus, copper and iron, but increased that of manganese in shoots and roots. The decrease in the concentration of the elements in the shoots was not due to dilution effect or to the reduced rate of translocation of the elements from the roots to tops. This has been attributed more to the changes in the availability of the elements in soil resulting from the application of phosphorus and zinc.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02184546
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  • 3
    Electronic Resource
    Electronic Resource
    Effect of nitrogen and zinc on the yield of submerged rice and uptake of N and Zn on unlimed and limed soils (1981)
    Springer
    Plant and soil 62 (1981), S. 183-192 
    Details
    ISSN: 1573-5036
    Keywords: Liming ; Nitrogen ; Rice ; Submerged rice ; Zinc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The effect of N and Zn on the yield of submerged rice and uptake of N and Zn was studied on limed and unlimed soils in greenhouse. Nitrogen was applied at the rate of 0,80 and 160 ppm through urea, ammonium sulphate and ammonium nitrate, Zn at 0 and 10 ppm in limed (4% CaCO3) and unlimed soils. Liming (4% CaCO3) decreased dry matter yield of rice at tillering, heading and straw and grain at maturity significantly against unlimed treatments. Ammonium sulphate gave highest yield with all applied doses followed by ammonium nitrate and urea. Zinc at 10 ppm increased dry matter and grain yield significantly over no Zn treatment in rice. The N sources gave N concentration and uptake in rice plants in decreasing order: $$Ammonium sulphate 〉 Ammonium nitrate 〉 Urea.$$ The highest N concentration was recorded with 160 ppm followed by 80 ppm N through any source and lowest in control. The application of Zn increased and liming decreased N concentration and uptake by rice at all sampling stages. Highest N concentration (2.37 to 3.92%) was observed at tillering followed at heading (0.48 to 1.05%). At maturity N in grain ranged from 0.69 to 1.13% whereas in straw from 0.24 to 0.41%. There were positive significant interactions of N(S) x N(L), N(S) and N(L) x Zn and negative interaction with lime on yield, N concentration (%) and N uptake (mg/pot). The application of N sources and levels and Zn increased Zn uptake (μg/pot), and liming decreased it. But 160 ppm N through any source decreased straw Zn concentration over 80 ppm N in absence of added Zn, however, effects on grain were not so strong particularly that of 160 ppm, when 10 ppm Zn was also added even 160 ppm N increased Zn concentration over 80 ppm significantly in both straw and grain. In this case the effect of N sources on Zn concentration was in the order: $$Ammonium sulphate 〉 Urea 〉 Ammonium nitrate.$$
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02374083
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  • 4
    Electronic Resource
    Electronic Resource
    The effect of ammonium and nitrate nitrogen sources on copper uptake and amino acid status of cereals (1981)
    Springer
    Plant and soil 62 (1981), S. 279-290 
    Details
    ISSN: 1573-5036
    Keywords: Amino acids ; Ammonium ; Copper ; Barley ; Nitrate ; Nitrogen ; Wheat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The effects of different nitrogen sources (NH4, NO3, and NH4 NO3) on the uptake of copper by wheat and barley growing in solution culture were compared in three experiments. Both the copper concentration and weight gain of shoots and roots were found to decrease in the order NO3〉NH4 NO3〉NH4 irrespective of the solution copper concentration. Ammonium nitrogen was also found to decrease the copper concentration of wheat grown on a copper deficient soil compared with a nitrate source of nitrogen. Increasing concentrations of ammonium ions in solution culture caused ammonium toxicity and reduced both plant copper concentrations and vegetative yield. Biochemical investigations using paper chromatography revealed that the amino acid asparagine was the major detoxification product of ammonia in wheat. Copper deficient plants were found to have elevated levels of amino acids compared with controls, irrespective of the nitrogen source.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02374091
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  • 5
    Electronic Resource
    Electronic Resource
    Effect of zinc, phosphorus and nitrogen on tryptophan concentration in rice grains grown on limed and unlimed soils (1981)
    Springer
    Plant and soil 62 (1981), S. 305-308 
    Details
    ISSN: 1573-5036
    Keywords: Liming ; Nitrogen ; Phosphorus ; Rice ; Tryptophan ; Zinc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The effects of Zn, P, N and CaCO3 on tryptophan concentration in rice grain were studied in greenhouse at Haryana Agricultural University. Zinc application upto 20 ppm increased tryptophan concentration in rice grain. Zn-EDTA gave highest increase followed by ZnSO4 and then ZnO. Liming at the rate of 4 and 8 per cent decreased tryptophan concentration significantly. Phosphorus application upto 100 ppm also decreased tryptophan significantly but Zn in combination with P increased tryptophan and overcame negative effect of P. Nitrogen application upto 120 ppm increased tryptophan concentration. There was positive interaction between Zn and N. Ammonium sulphate gave highest tryptophan followed by ammonium nitrate and then urea. The tryptophan concentration ranged between 766 ppm and 2011 ppm in paddy grain. The lowest tryptophan concentration was in the plants treated with 8 per cent lime in absence of added Zn and highest with 10 ppm Zn through Zn-EDTA.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02374094
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  • 6
    Electronic Resource
    Electronic Resource
    Boron, copper, iron, manganese and zinc contents in leaves of flowering sunflower plants (Helianthus annuus, L.), grown with different boron supplies (1981)
    Springer
    Plant and soil 62 (1981), S. 461-464 
    Details
    ISSN: 1573-5036
    Keywords: Boron ; Copper ; Iron ; Manganese ; Zinc ; Microelements ; Sunflower
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Boron, copper, iron, manganese and zinc concentrations were measured in sunflower leaves from plants grown hydroponically in a closed continuous flow system and with boron concentrations ranging from deficient to toxic. Leaves were analyzed at the stage of flower development. There was a highly significant inverse correlation between B concentration in solution and Mn concentration in leaves. Cu, Fe and Zn concentrations in the leaves were not changed by the different B levels, although the B concentration in leaves increased with an increasing concentration in solution, showing a close correlation each other.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02374142
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  • 7
    Electronic Resource
    Electronic Resource
    Utility of some nitrogen-fixing microorganisms in the phyllosphere of crop plants (1981)
    Springer
    Plant and soil 63 (1981), S. 465-476 
    Details
    ISSN: 1573-5036
    Keywords: Aphanothece ; Beijerinckia ; Klebsiella ; Mycobacterium ; N2-fixation ; Phyllosphere ; Rice ; Streptomyces
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The utility of spraying some known N2-fixing microorganisms on rice leaves grown both in N-less sand culture and under field conditions was examined. The effect was compared with that of spraying a phyllosphere N2-fixing isolate of Klebsiella, KUPBR2, and application of nitrogenous fertilizers. All the growth parameters studied including dry weight and N-content were enhanced. Under field conditions number of tillers was increased by 26% withKlebsiella pneumoniae M5al and by 65% with Aphanothece. The dry weight of the plants was enhanced by 61–119%. The yield per 10 m2 was almost doubled with Aphanothece, Beijerinckia 8007,Mycobacterium flavum, K. pneumoniae M5al and KUPBR2. The increases observed withStreptomyces sp. G12 though less spectacular was significant at 1% level with respect to several growth parameters.K. pneumoniae M5al,M. flavum andStreptomyces sp. G12 exhibited nitrogenase activity both in laboratory culture and in association with rice plants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02370046
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  • 8
    Electronic Resource
    Electronic Resource
    Effects of a soil fulvic acid on the growth and nutrient content of cucumber (Cucumis sativus) plants (1981)
    Springer
    Plant and soil 63 (1981), S. 491-495 
    Details
    ISSN: 1573-5036
    Keywords: Calcium ; Copper ; Flowers ; Iron ; Leaves ; Magnesium ; Nitrogen ; Nutrient uptake ; Phosphorus ; Potassium ; Koots ; Shoots ; Zinc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Cucumber (Cucumis sativus) plants were grown in Hoagland solution to which 20 to 2000 ppm of a soil fulvic acid (FA) were added. The addition of 100 to 300 ppm of FA produced highly significant increases in the growth and development of above and below ground plant parts, in the uptake of nutrient elements (N, P, K, Ca, Mg, Cu, Fe and Zn), and in the formation of numbers of flowers per plant. Effects of adding 500 and more ppm of FA were less beneficial.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02370049
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  • 9
    Electronic Resource
    Electronic Resource
    Effect of water table depth and tillage methods on plant-water status and yield of rice (1981)
    Springer
    Plant and soil 59 (1981), S. 17-22 
    Details
    ISSN: 1573-5036
    Keywords: Drainage ; Drought tolerance ; Evapotranspiration ; Leaf-water potential ; Lysimeter ; Rice ; Root development ; Soil-moisture regime ; Transpiration ; Varietal response
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Effects of water table depths on plant-water status, and on growth and yields of two rice varieties (TOS 78 and TOS 848) were studied in a lysimetric investigation. A field study was also conducted on a hydromorphic soil to investigate the effects of fluctuating water table on rice. The leaf-water potential of TOS 78 monitored at 1300 hours at 50% flowering stage was −17.5 and −23.0 bars for 0 and 60 cm water table depths, respectively. When grown under soil moisture stress, TOS 848 maintained higher leaf-water potential (−17.5 barvs −22.5 bar) and yielded more than TOS 78. Under hydromorphic soil conditions, no-tillage treatments yielded the same as conventionally tilled plots.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02183588
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  • 10
    Electronic Resource
    Electronic Resource
    Influence of waterlogging and lime or organic matter additions on the distribution of trace metals in an acid soil (1981)
    Springer
    Plant and soil 59 (1981), S. 327-333 
    Details
    ISSN: 1573-5036
    Keywords: Acid soil ; Complexed metals ; Copper ; Iron oxides ; Lime ; Manganese oxides ; Organic matter ; Redistribution ; Trace metals ; Waterlogging ; Zinc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The redistribution of zinc and copper in a soil as a result of waterlogging has been studied using selective extractants to remove metals held by specific mechanisms. Waterlogging over a period of 16 weeks resulted in a lowering of soluble, exchangeable and organically bound zinc and copper. There is a concomitant increase in the levels of these metals held by specific adsorption (acetic acid extractable) and by poorly ordered oxides (oxalate extractable). It is suggested that the breakdown of these oxides of iron and manganese, which is brought about by waterlogging, provides surfaces with high adsorptive capacity for zinc and copper. Addition of 1% dried grass or 1% lime to the soil caused an acceleration in metal redistribution. Some of the copper released was retained in the standing water, presumably as a soluble chelate. This was not the case with zinc.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02184204
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  • 11
    Electronic Resource
    Electronic Resource
    Studies on the nature of relationships between grain size, spikelet number, grain yield and spikelet filling in late duration varieties of rice (Oryza sativa L.) (1981)
    Springer
    Plant and soil 60 (1981), S. 123-130 
    Details
    ISSN: 1573-5036
    Keywords: Grain number ; Grain size ; Productivity ; Rate of grain growth ; Rice ; Spikelet filling
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Studies on the nature of relationship between grain size (in terms of thousand grain weight), grain number, rate of filling and yield have been worked out with late duration (140–150 days) rice varieties. Grain number per m2, grains per panicle and yield showed a negative relationship with grain size. There was no compensatory balance between grain size and grain number within a range of thousand grain weight of 15 to 30 g. Based on the peaks in grain filling activity, the varieties were classified into four groups. There was no relationship between grain size and rate of grain filling thereby suggesting that grain filling is determined by inherent endogenous factors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02377117
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  • 12
    Electronic Resource
    Electronic Resource
    The influence of some soil and plant factors on the concentration of copper in perennial ryegrass (1981)
    Springer
    Plant and soil 60 (1981), S. 275-286 
    Details
    ISSN: 1573-5036
    Keywords: Absorption ; Availability ; Copper ; Extractable-Cu ; Lolium perenne ; Nitrogen ; Roots ; Soils ; Transport
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The absorption and transport of Cu were studied in perennial ryegrass grwon on 21 soils under controlled environment conditions. Neither the concentration, nor the total amount, of Cu in the shoots was related to available Cu in the soils as assessed by extraction with 0.05M EDTA, 0.005M DTPA, or 1.95 per cent HNO3. The concentration in the roots and, more especially, absorption per unit weight of root (i.e. μg Cu g dry wt−1) were, however, highly correlated with available soil Cu. This suggests that, unless the extent of exploitation of the soil by roots is taken into account, measurements of available Cu will not be effective in predicting uptake by plants. On average, 63 per cent of the Cu absorbed by the roots was retained in the roots, and variation in the proportion retained was related to the transport of nitrogen from roots to shoots. On some soils the concentrations of N and Cu in the shoots were significantly correlated, and variation in N concentration accounted for a considerable proportion of the variance in the Cu concentration at later harvests. The relative importance of the measured soil (pH, organic matter) and plant (dry weight, N content) factors changed markedly over 6 successive harvests.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02374111
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  • 13
    Electronic Resource
    Electronic Resource
    Dilute hydrochloric acid as an extractant for available zinc, copper and boron in rice soils (1981)
    Springer
    Plant and soil 61 (1981), S. 297-310 
    Details
    ISSN: 1573-5036
    Keywords: Boron toxicity ; Copper and zinc deficiencies ; Critical limits ; Dilute hydrochloric acid extraction ; Flooded soils ; Rice ; Soil tests
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Because zinc deficiency is a widespread disorder of wetland rice and copper deficiency may occur with it, 0.05M HCl was compared with 0.1M HCl, EDTA and DTPA as an extractant for available zinc and copper. It was also compared with the reflux method for boron assay. Thirty-three wetland rice soils were analyzed for zinc and copper by the four methods. Rice was grown on the flooded soils, scored visually for zinc deficiency, and the plants analyzed for zinc and copper content. In the boron study, 53 soils were extracted by the reflux method and the 0.05M HCl procedure. Rice was grown on the flooded soils, scored visually for boron toxicity, and the plants analyzed for boron content. Fourteen of the 16 soils on which rice showed zinc deficiency gave 〈1.0 mg/kg Zn by the 0.05M HCl method but values far in excess of the critical limits by the other methods. The r values for available and plant zinc were: 0.05M HCl (0.88**); 0.1M HCl (0.55**); EDTA (0.43**); and DTPA (0.31ns). Twelve of the zinc-deficient soils gave〈0.1 mg/kg Cu by the 0.05M HCl method but values exceeding the critical limits by the EDTA and DTPA methods. The r values for available and plant copper were: 0.05M HCl (0.74**), 0.1M HCl (0.64**), EDTA (0.28ns), and DTPA (0.20ns). The critical limit of 1.0 mg/kg by the 0.05M HCl extraction was confirmed for zinc deficiency and a tentative value of 0.1 mg/kg for copper deficiency proposed. The 0.05M HCl method separated boron-toxic soils from non-toxic soils and gave a better correlation (r=0.91**) between available and plant boron than the reflux extraction (r=0.84**). The toxic limit by the 0.05M HCl method was provisionally set at 4 mg/kg.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02182011
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  • 14
    Electronic Resource
    Electronic Resource
    Heavy-metal accumulation in crops grown on sewage sludge amended with metal salts (1981)
    Springer
    Plant and soil 62 (1981), S. 3-14 
    Details
    ISSN: 1573-5036
    Keywords: Cadmium ; Chromium ; Copper ; Crops ; Heavy-metal tolerance/interaction ; Lead ; Nickel ; Sewage sludge ; Toxicity ; Trees ; Vegetables
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Poplar (Populus euramericana ‘Robusta’), oats (Avena sativa L. ‘Leander’), maize (Zea mays L. ‘Ona 36’), English ryegrass (Lolium perenne L.), butter head lettuce (Lactuca sativa L. ‘Reskia’), spinach (Spinacia oleracea L. ‘Subito’) and French beans (Phaseolus vulgaris ‘Prelude’), were grown in pots with pure sewage sludge (pH 6.7), amended with Cd, Cr, Cu, Ni, Pb and Zn acetates, either added singly or in combination, to study metal effects on plant growth and metal uptake. Phytotoxic metal doses varied with metal and plant species, increasing in the order Cd〈Ni〈Cu〈Zn〈Cr and Pb. The threshold dose of toxic metals applied in combination was generally lower than that of metals given singly. Addition of Cd, Ni and Zn was clearly reflected in the respective plant concentrations. This was much less so for Cu, whereas Cr and Pb concentrations were not affected in most plant species. Critical plant (leaf) metal concentrations were lower for metals applied in combination than for single metals. Because of such phenomena the use of critical levels as a diagnostic tool for determining potential multiple metal toxicity is limited.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02205020
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