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- W2183431762 abstract "This chapter presents the estimates of nitrogen fixation by legume crops and discusses the methods of estimating fixation by crops. The pulses are sources of good-quality protein. The forages have a long-documented history of supporting livestock on poor soil. Both these factors are attributed in part to the ability of legumes, in symbiosis with rhizobia, to obtain nitrogen from the air. Legumes require more phosphate fertilizer than cereals, and many are more demanding of water. There is not a single legume crop for which valid estimates of the nitrogen fixed in agriculture is available. There are good estimates for soybean grown in representative locations in experimental plots. Dry beans are the important legume crop for human consumption in Latin America. There is no good evidence that any legume crop satisfies all its nitrogen requirements by fixation. The highest estimates are typical of low-fertility soil or soils artificially made N-poor by admixture or carbon amendment. The simplest estimate of nitrogen fixation is by total nitrogen accumulation of the crop. This is based on the intuitive assumption that the crop derives all its nitrogen via symbiotic fixation." @default.
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- W2183431762 date "1981-01-01" @default.
- W2183431762 modified "2023-10-01" @default.
- W2183431762 title "How Much Nitrogen do Legumes Fix?" @default.
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- W2183431762 doi "https://doi.org/10.1016/s0065-2113(08)60883-4" @default.
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