Nitrogen is the most important mineral nutrient of plants, constituting about 1 to 5% of the matter. The nitrogen management, either by the conventional or by non-conventional approaches will be an important aspect of increasing plant and related products. The present volume examines in its 20 chapters contributed by eminent group of scientists from India, New Zealand, Canada, Brazil, Taiwan, The Netherlands, U.S.A. and Japan the most recent advances of various forms of usable nitrogen compounds in the environment of the plant, their mode of entry inside the plant, assimilation into...