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  • Arachis hypogaea  (3)
  • Springer  (3)
  • 1
    Electronic Resource
    Electronic Resource
    The influence of plant growth habit on calcium nutrition of groundnut (Arachis hypogaea L.) pods (1994)
    Springer
    Plant and soil 160 (1994), S. 113-118 
    Details
    ISSN: 1573-5036
    Keywords: Arachis hypogaea ; calcium availability ; calcium contents ; groundnut ; nutrition ; growth habit ; pod distribution ; shelling percentage
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract In field experiments in India and Niger runner and bunch groundnut cultivars were compared for their pod distribution pattern and its relevance to the calcium (Ca) supply for pod development. Bunch cultivars produced sixty to eighty percent of their pods within 5 cm of the tap root. Runner cultivars explored a radius of up to 30 cm for pod production and exploited the soil area in a more homogeneous manner than bunch types. The available soil volume per pod was 19 to 27 cm3 for bunch types and 43 to 46 cm3 for runner types, varying the potential for Ca competition between pods. Computation of the soil Ca content needed to satisfy pod Ca requirements showed that much higher concentrations were needed for the bunch cultivars than for the runners. No significant differences in Ca content of pods existed between bunch and runner cultivars. However, in the runner cultivars, the Ca content of the more widely dispersed pods in outer zones was greater than that of the more densely populated inner pod zones. Regression analysis of shelling percentage across a range of environments showed that the shelling percentage of runners declined less rapidly than did the shelling percent of bunch types, indicating that runners were more efficient in exploiting Ca at lower soil Ca availability than the bunch types.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00150352
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Light interception as a source of variation for nitrogen fixation in groundnut genotypes (1990)
    Springer
    Plant and soil 121 (1990), S. 83-88 
    Details
    ISSN: 1573-5036
    Keywords: acetylene reduction ; Arachis hypogaea ; genotypes ; light ; light interception ; nitrogen fixation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract A range of groundnut (Arachis hypogaea L.) genotypes, representing the cultivated botanical groups, were grown at ICRISAT Center, India. In 3 experiments, 3–8 genotypes were grown at various plant-population densities. In a fourth experiment, 27 genotypes were grown at a constant spacing. Acetylene reduction (AR) and fractional light interception (f) by these cultivars were measured at several stages of crop growth. Plant population (density), sample date and genotype influenced both the AR rate m-2 and the fraction of light intercepted; variables that were well correlated. In 3 experiments, ca. 90% of the statistical variation in AR rate m-2 was attributed to variations in f. In the remaining experiment, genotypic variance was 46% of the explained variance; one genotype (Gangapuri) had consistently low AR across the range of populations, however in the other experiments Gangapuri did not differ from other cultivars in AR/f, when sampled at earlier stages of development.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00013100
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Light interception as a source of variation for nitrogen fixation in groundnut genotypes (1990)
    Springer
    Plant and soil 122 (1990), S. 83-88 
    Details
    ISSN: 1573-5036
    Keywords: acetylene reduction ; Arachis hypogaea ; genotypes ; light ; light interception ; nitrogen fixation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract A range of groundnut (Arachis hypogaea L.) genotypes, representing the cultivated botanical groups, were grown at ICRISAT Center, India. In 3 experiments, 3–8 genotypes were grown at various plant-population densities. In a fourth experiment, 27 genotypes were grown at a constant spacing. Acetylene reduction (AR) and fractional light interception (f) by these cultivars were measured at several stages of crop growth. Plant population (density), sample date and genotype influenced both the AR rate m-2 and the fraction of light intercepted; variables that were well correlated. In 3 experiments,ca. 90% of the statistical variation in AR rate m-2 was attributed to variations in f. In the remaining experiment, genotypic variance was 46% of the explained variance; one genotype (Gangapuri) had consistently low AR across the range of populations, however in the other experiments Gangapuri did not differ from other cultivars in AR/f, when sampled at earlier stages of development.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02444107
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    Paper (German National Licenses)
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