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Résumé :
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Nitrogen (N) is among the most important elements required in agricultural systems to produce food and to supply protein for the increasingly larger World population. The amount of N required increases directly in response to the requirement for protein in the diets of growing population numbers. This book holistically describes the topic of N in the environment, the sources of N and the issues associated with its management. Twenty chapters were prepared by fifty authors who provide an extensive scientific and literature documentation of the issues. The main sections are : background and importance of nitrogen, water quality, atmospheric effects, emerging prediction and management technologies, economic and policy issues.
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