Nitrogen uptake response of crops to organic nitrogen |
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| Authors: | Makoto Yamagata Noriharu Ae |
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| Institution: | National Institute of Agro-Environmental Sciences , Tsukuba , 305 , Japan |
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| Abstract: | Sustainability of agriculture became a major issue of global concern during this decade. Agronomic practices aimed at reducing the dependence on inputs such as chemical fertilizers can contribute to sustainability. Nitrogen (N) is the most limiting and commonly applied nutrient for crop production. The development of nutrient-responsive cultivars especially during the past three decades led to an intensive use of N fertilizers in many agricultural systems. Environmental and economic issues associated with such practices have, however, generated an interest in alternative management systems. These include practices such as exploitation of beneficial biological functions (symbiotic nitrogen fixation, etc.) and substitution of chemical fertilizers with farm-generated products. |
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| Keywords: | amino acid maize nitrogen mobilization rice bran upland rice |
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