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  • Articles  (24)
  • Nodulation  (24)
  • Springer  (24)
  • American Chemical Society
  • International Union of Crystallography (IUCr)
  • 1985-1989  (7)
  • 1980-1984  (12)
  • 1975-1979  (5)
  • 1970-1974
  • 1955-1959
  • Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition  (24)
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  • Articles  (24)
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  • Springer  (24)
  • American Chemical Society
  • International Union of Crystallography (IUCr)
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  • Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition  (24)
  • Biology  (9)
  • Medicine  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Plant and soil 66 (1982), S. 413-416 
    ISSN: 1573-5036
    Keywords: Growth ; Nematicide ; Nitrogen fixation ; Nodulation ; Peanut ; Rhizobium
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The effect of two granular nematicidesviz. oxamyl and fenamiphos, on the nodulation and growth of Rhizobium inoculatedArachis hypogaea L. was studied in glasshouse and field trials. In the glasshouse trial at the suggested rates of application shoot fresh weight was significantly reduced by oxamyl whilst root fresh weight was similarly affected by fenamiphos. In the field trial vegetative growth and plant emergence were significantly reduced by both nematicides. Nodulation at the higher rates of application was increased by both oxamyl and fenamiphos whilst oxamyl caused a significant increase in pod number at the highest rate of application.
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Plant and soil 60 (1981), S. 139-142 
    ISSN: 1573-5036
    Keywords: Legumes ; Nitrogen fixation ; Nodulation ; Winged beans
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Only legumes of the cowpea cross-inoculation group, including the winged bean (Psophocarpus tetragonolobus) were found to form nodules in a temperate zone soil with no previous history of legume cropping. Isolates from root nodules from uninoculated winged beans grown in the field only nodulated legumes in the cowpea cross-inoculation group.Rhizobium japonicum formed ineffective nodules with the winged bean.
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Plant and soil 53 (1979), S. 37-47 
    ISSN: 1573-5036
    Keywords: Allelopathy ; Branching ; Inhibition ; Leaching ; Legumes ; Nodulation ; Parthenium ; Tillering ; Weed residues ; Yield
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Growth toxins are released to the soil through leaching and during decay from the air-dried parts ofParthenium hysterophorus L. The dry leaves mixed to the soil inhibit nodulation and growth in legumes, branching in tomato (Lycopersicum esculentum L. cv. ‘Pusa Ruby’), plant height and tillering in ragi (Eleusine coracana Gaertn. cv. ‘Poorna’), and yield in bean (Phaseolus vulgaris. L. cv. ‘Burpees Stringless’), cowpea (Vigna sinensis L.), tomato and ragi, but have stimulatory effect on bajra (Pennisetum typhoideum Rich cv. ‘H.B.1’). The inhibitors released to the substratum remain active for about thirty days.
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Plant and soil 53 (1979), S. 319-328 
    ISSN: 1573-5036
    Keywords: Dolichos ; Growth ; Greenhouse ; Lablab ; Leaf area ; Nitrogen fixation ; Nodulation ; Sand culture ; Sugars ; Sulfur
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary In order to explore interrelations between S nutrition, soluble sugars, leaf area, nodulation and N2 fixation, greenhouse experiments were done with several levels of S added to perlite-sand cultures or to a moderately S-deficient soil. Sulfur had indirect effects on nodulation and N2 fixation, possibly by improving sugars supply and N metabolism. In perlite-sand culture, leaf area increased with concentrations of supplied S up to 50 and 200 μM for symbiotic and N-treated plants respectively, then decreased at higher concentrations. Plant yield and total sugars content (mg per plant) for the N-treated plants behaved similar to leaf area in response to added S but in the symbiotic plants maximum values were obtained at 100 μM S. In soil, Mo had no effect on growth but interacted significantly with S in affecting total sugars content. High levels of S depressed sugars content at low Mo but raised it at high Mo. Sulfur increased the N content of soil-grown plants. It increased the N content of plants grown in perlite-sand culture except at very high levels of S. There was little effect on concentration of N in the shoots. Nitrogen content correlated significantly with leaf area and sugar content, and highly significantly with S concentration in the shoots.
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Plant and soil 53 (1979), S. 559-563 
    ISSN: 1573-5036
    Keywords: Endomycorrhiza ; Gigaspora gigantea ; Glomus mosseae ; Glycine max ; Nodulation ; Soil pH ; Soybean ; Symbiosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Soybean (Glycine max {L.} Merr.) cultivars were inoculated withGigaspora gigantea andGlomus mosseae to determine mycorrhizal: cultivar relationships as affected by soil pH. The specific cultivarfungal response was dependent on soil pH. Overall cultivar responses in unlimed soil (pH 5.1) were greater forG. gigantea thanG. mosseae. The ‘Bossier’ —G. gigantea combination was particularly responsive in unlimed soil and showed an increase of 10% in shoot length, 35% in shoot dry weight. 75% in root dry weight, and 397% in nodule dry weight over uninoculated controls. Little cultivar response was observed withG. mosseae inoculation in unlimed soil. In limed soil (pH 6.2), the larger responses were obtained withG. mosseae inoculated plants, although inoculation with eitherG. mosseae orG. gigantea appeared effective. In general, nodulation was greater on mycorrhizal roots than on control roots.
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  • 6
    ISSN: 1573-5036
    Keywords: Acetylen reduction assay ; Aluminium toxicity ; Chemical composition ; Cowpea ; Cultivar tolerance to soil acidity ; Liming ; Nitrogen deficiency ; Nitrogenase activity ; Nodulation ; Relative dry matter yields ; Soil acidity ; Ultisol ; Lime-induced yield depression
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The differential response of six cowpea (Vigna unguiculata (L.) Walp) cultivars to liming was assessed in a greenhouse trial using an Ultisol (Typic Paleudult) from southeastern Nigeria. Lime rates from 0 to 5.0 t/ha were applied to give a range of soil pH, determined in 1∶1 soil/water from 4.25 to about 7.0. Without liming, relative dry matter yields of tops ranged between 46.6 and 76.8 percent. Significant yield responses to the first lime increment (0.5 t/ha) were observed particularly in the less tolerant cultivars and maximum yields were generally obtained with application of 1.6 to 2.5 t/ha lime. Among the six cultivars, TVu 4557 and Ife Brown were most tolerant, Vita-1 and Vita-3 were moderately tolerant, and TVu 1977-OD and TVu 4552 were least tolerant to soil acidity. The latter two cultivars were the most poorly nodulated when grown in the unlimed soil. The first lime increment enabled excellent nodulation to be achieved in all cultivars. Nitrogen analyses on tops confirmed the visual symptoms of nitrogen deficiency in two cultivars (Vita-1, TVu 1977-OD) grown in the unlimed soil. Analysis of data on chemical composition of plant tops and chemical soil characteristics gave indications that aluminium toxicity is the major growth limiting factor for cowpeas in this soil. This study, albeit with a limited range of cowpea germplasm clearly indicates that cowpea possesses considerable potential as a grain legume on strongly acid soils (pH〈5.0), even in circumstances where lime is not available. Low rates of lime (0.5 t/ha or less) will greatly expand the available choice of cultivars.
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  • 7
    ISSN: 1573-5036
    Keywords: Cations ; Interaction ; Mycorrhiza ; Nodulation ; Phosphate ; Trifolium subterraneum ; VAM
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Conclusions Mycorrhizal fungi increase the rate of phosphate uptake by roots (P inflow) over a range of soil P levels even when mycorrhizal growth increases no longer occur. It is likely that the fungi play a direct part in uptake and translocation of P to the roots. V.A.M. effects on nodulation and N2 fixation are largely indirect, probably resulting from improved P nutrition and growth at low soil P levels. Work on inorganic cation nutrition is much less advanced, but it is already clear that there are interactions between P nutrition and cation uptake which may also be indirect. The pattern of N assimilation (N2 fixation vis-à-vis NaNO3 or (NH4)2SO4 uptake) may modify cation/P interactions. Further work is required to distinguish cause and effect and to clarify the role played by V.A.M. fungi.
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  • 8
    ISSN: 1573-5036
    Keywords: Aluminium toxicity ; Nodulation ; Stylosanthes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Effects of three solution aluminium concentrations (0, 25 and 100 μM) on nodulation ofStylosanthes hamata andStylosanthes scabra inoculated with Rhizobium CB 756 were studied using nutrient solution culture. Aluminium strongly affected nodulation by delaying nodule appearance and reducing the number and dry weight of nodules in both species. The effects of aluminium toxicity on nodulation were more pronounced inStylosanthes scabra than inStylosanthes hamata. These effects of aluminium on nodulation occurred before any significant effect of aluminium on top growth, root growth or root elongation. A plant transfer experiment suggested that aluminium interfered with root infection and/or nodule initiation in both species. The detrimental effect of aluminium on nodulation appeared to be associated with a reduction in lateral root density, thus decreasing the potential number of sites for root infection and nodule formation.
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Plant and soil 66 (1982), S. 149-160 
    ISSN: 1573-5036
    Keywords: Bean ; Nodulation ; Phaseolus vulgaris ; Rhizobium phaseoli ; Solution culture ; Symbiosis N2-fixation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Conditions and techniques for achieving good nodulation ofPhaseolus vulgaris L. in continuously aerated solution were developed from greenhouse experiments. If nodules had been established, their growth and activity and the growth of the plant were at least as good in solution culture as in gravel culture. Nodule formation was observed within 10 days of inoculation in small volumes of solution culture (1 liter). In large volumes (19 liters), similarly prompt nodulation occurred only if the plants were inoculated before or immediately after the seedlings were transferred to the solution from gravel or vermiculite; and the nodules were restricted to the roots that had been present at the time of transfer. Delayed inoculation, 2 days after transfer to large volume solutions, led to sparse nodulation observed only after 3 weeks. Delay or inhibition of nodulation in large volumes of solution could not be explained by failute of bacteria to colonize roots or by sparsity of root hairs. Nodule initiation in solution culture was severely inhibited at pH below 5.4. An additional problem in growing N2-dependent bean in solution culture was the buildup of Cl− to toxic levels in the plant in nitrate-free media, even at solution concentrations as low as 0.4 mM Cl−. Daily addition of 0.5 to 1.0 mg N per plant delayed nodule growth and activity slightly, but increased plant growth and alleviated the severe N-deficiency that otherwise developed before the onset of N2-fixation.
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  • 10
    ISSN: 1573-5036
    Keywords: Aluminium toxicity ; Nitrogen fixation ; Nodulation ; Stylosanthes hamata ; Stylosanthes humilis ; Stylosanthes scabra
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Effects of three solution aluminium concentrations (0, 25, and 100μM) on nitrogen fixation by well-nodulated plants ofStylosanthes hamata, Stylosanthes humilis andStylosanthes scabra are reported. Plants were inoculated with Rhizobium CB756 and grown for 21 days in an aluminium-free nutrient solution at pH 5.3 before imposition of the aluminium treatments. Nitrogen fixation was measured both by the increase in total nitrogen content of the plants and acetylene reduction in roots of plants harvested at 10 and 20 days after imposition of the aluminium treatments. Solution aluminium concentrations as high as 100μM, had no detrimental effect on nitrogen fixation in any species.
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