ISBN 9788189866334,Agricultural Nitrogen Use & Its Environmental Implications

Agricultural Nitrogen Use & Its Environmental Implications



I.K. International Pvt. Ltd

Publication Year 2007

ISBN 9788189866334

ISBN-10 8189866338


Number of Pages 552 Pages
Language (English)
Nitrogen fertilizers are the inescapable necessity to enhance agricultural production and to sustain food security. However, their inefficient use accrues from inherent limitations of the crop plants as well as the manner in which N fertilizers are formulated, applied and managed. Excessive accumulation of N in the environment leads to soil acidification, pollution of groundwater and eutrophication of surface water, posing a public health problem as well as ecosystem imbalance. Moreover, the ozone layer depletion and greenhouse effects of NOx gases have global implications. Agricultural Nitrogen Use: Environmental Implications provides a comprehensive, interdisciplinary description of problems related to the efficient use of nitrogen in agriculture, in the overall context of the nitrogen cycle, its environmental and human health implications, as well as various approaches to improve N use efficiency. The book is presented in six sections: N Use, Flows and Cycling in Agricultural Systems; N Use Efficiency in Crop Ecosystems; Management Options and Strategies for Enhancing N Use Efficiency; Plant Physiological and Molecular Aspects of Enhancing N Use Efficiency; Role of Legumes and Biofertilizers in Agricultural N Economy; and Environmental and Human Health Implications. Table of Contents Introduction Towards an Integrative Understanding of Reactive Nitrogen Section I Nitrogen use, flows and cycling in agricultural systems: Indian agriculture and nitrogen cycle Nitrogen in Indian agriculture Nitrogen transformations and flows in agro-ecosystems: An overview Understanding spatial patterns of terrestrial nitrogen cycle in India ? Using remote sensing and GIS Section II Nitrogen use efficiency in crop ecosystems: Nitrogen use efficiency in rice ecosystems Fertilizer use constraints and management in rain-fed areas with special emphasis on nitrogen use efficiency Enhancing nitrogen use efficiency for sustainable rice-wheat production system in the Indo-Gangetic plains of India 15N Studies in relation to N balance in cropping systems Section III Management options and strategies for enhancing N use efficiency: Management options for increasing nitrogen use efficiency Importance of interactions of nitrogen with primary, secondary and micronutrients in crop production and environmental safety: Indian Perspective Nitrogen Use Efficiency improvement through USG and NCU: Initiative of the Indian Industry Nitrogen from industrial wastes as soil amendment in agriculture Improving nitrogen-use efficiency: strategies, tools, management and policy options Section IV Plant physiological and molecular aspects of enhancing N use efficiency: Physiological and biochemical aspects of nitrogen use efficiency in crop plants Molecular approaches for enhancement of nitrogen use efficiency in plants Section V Role of legumes and biofertilizers in agricultural N economy: Role of legumes in nitrogen economy of cereals cropping systems: The Indian Scenario Biological nitrogen fixation from fundamentals to field considerations Biological nitrogen fixation and biofertilizers: Status and prospects Nitrogen fixation in arid and semiarid agriculture: Opportunities and constraints Section VI Environmental and human health implications: Nitrate pollution of groundwater from use of nitrogen fertilizers in agriculture in India N-fertilizers and gaseous-N emission from rice-based cropping systems N-pool, its re-use and sustainability issues of a developing country city - Bangalore Nitrogen cycling and fluxes in coastal ecosystems Nitrate toxicity and human health Readership: Graduate, Postgraduate, Research Scholars and Policy makers in Agricultural and Environmental Sciences.