Titlebook: Biological Nitrogen Fixation for Sustainable Agriculture; Extended versions of J. K. Ladha,T. George,B. B. Bohlool Book 1992 Springer Scien

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Biological nitrogen fixation for sustainable agriculture: A perspective,date that alternatives to N fertilizers must be urgently sought. Biological nitrogen fixation (BNF), a microbiological process which converts atmospheric nitrogen into a plant-usable form, offers this alternative. Nitrogen-fixing systems offer an economically attractive and ecologically sound means

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Biological nitrogen fixation: Investments, expectations and actual contributions to agriculture,n plants and . spp. or cyanobacteria, or from non-symbiotic associations between free-living diazotrophs and plant roots. It is assumed that these N.-fixing systems will satisfy a large portion of their own N requirements from atmospheric N., and that additional fixed N will be contributed to soil r

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Confound

Managing native and legume-fixed nitrogen in lowland rice-based cropping systems,ce growing season. Rainfall distribution, availability of irrigation water and prevailing temperatures determine when rice or other crops are grown. Nitrogen is the most required nutrient in lowland rice-based cropping systems. Reducing fertilizer N use in these cropping systems, while maintaining o

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Biological nitrogen fixation in non-leguminous field crops: Recent advances,om N. fixation is usually gained from spontaneous associations that can rarely be managed as part of agricultural practice. Particularly for dryland systems, these associations appear to be very unreliable as a means of raising the nitrogen status of plants. However, recent technical advances involv

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Biological nitrogen fixation in mixed legume/grass pastures,d grasses. Estimates of BNF depend on the method of measurement and some of the advantages and limitations of the main methods are outlined. The amounts of N fixed from atmospheric N. in legume/grass pastures throughout the world is summarised and range from 13 to 682 kg N ha. yr.. The corresponding

Consequence

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