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  • 1
    Electronic Resource
    Electronic Resource
    Elemental Composition of Sugar-cane Leaf and Stem in relation to Nitrogen Deficiency (1951)
    [s.l.] : Nature Publishing Group
    Nature 167 (1951), S. 731-732 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Nitrogen deficiency lowered total nitrogen content of both stem and leaf. Other constituents in the leaf were, on the contrary, increased in deficient cultures. P2O5 and magnesium contents were increased more in the stem than in the leaf, while K2O was higher in leaf but did not change appreciably ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/167731a0
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Long-term effect of N and P fertilization on a pearlmillet—wheat cropping system (1982)
    Springer
    Nutrient cycling in agroecosystems 3 (1982), S. 127-139 
    Details
    ISSN: 1573-0867
    Keywords: cropping system ; optimum fertilizer use ; residual fertility ; sequential cropping
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Results of an eight-year study on long-term effect of N and P application in a pearlmillet—wheat sequence is reported. There was little or no residual effect of N on any of the crops. Pearlmillet needed 70 to 80 kg N and wheat required more than 120 kg N ha−1 every year for optimum grain yield. There was no soluble P build up in soil by continuous P application. Fertilizing wheat every year with 19 kg P and pearlmillet with 13 kg P ha−1 is considered optimum. Continuous cropping leading to a production of 216 tonnes of biomass ha−1 in 17 crops and use of high analysis N (urea) and P (triple superphosphate) fertilizers had not impaired the K and Zn supplying capacity of these alluvial soils containing illite clay minerals. The experiment is being continued to monitor the productivity of the soil as affected by continuous cropping.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01082973
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Modification of irrigation requirement of wheat through mulching and foliar application of transpiration suppressants (1983)
    Springer
    Irrigation science 4 (1983), S. 215-223 
    Details
    ISSN: 1432-1319
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Field experiments on wheat for 2 years showed a beneficial effect of organic mulch (rice straw), reflective transpiration suppressant (kaolin) or metabolic antitranspirant (alachlor) by decreasing the evapotranspiration (ET) losses of soil water, increasing grain yield and thus water use efficiency. Increase in grain yield was due to an increased tiller survival, longer spikes and more spikelet fertility. The number of shrivelled kernels per spike was reduced by ET control measures. A combination of mulching and transpiration suppression brought about a saving of 1 irrigation on a clay-loam soil and at least 2 irrigations on a loamy-sand soil. Without the ET control measures 4 irrigations were needed on a clay-loam soil and 6 on a loamy-sand soil for maximum productivity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00285527
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    Paper (German National Licenses)
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