Recycling Organic Wastes for Soil Health and Productivity

Recycling Organic Wastes for Soil Health and Productivity
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Recycling Organic Wastes for Soil Health and Productivity

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Publisher: Agrotech Publications
ISBN: 9788183212137
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Preface Over exploitation and degradation of natural resources is one of the major weaknesses that the present Indian Agriculture faces. The soil resource is also under increasing stress as there is a big gap deficit of about 10 million tonnes NPK nutrients between annual drain of nutrients from the soil due to crop removals and the nutrient inputs from the external sources. Surveys conducted in major states revealed that majority of the farmers are under fertilizing their crops due to escalated costs of fertilizers and reduced response of crops to applied nutrients. But fortunately considerable quantities of organic wastes are available in India which, if used properly, can supply about 7.0, 3.0 and 7.6 million tonnes of N, P and K, respectively. Integrated Nutrient Management INM has been recognized as the economically viable and environmentally benign technology to enhance soil productivity through the balanced use of mineral fertilizers combined with organic sources of plant nutrients. One of the major constraints of INM is the quantity and quality of organic manures available with the farmers. Even though significant quantities of organic manures are available with the farmers, their quality is poor. Lot of research has been done in ICAR Institutes as well as SAUs to enhance the quality of manures by efficient composting techniques. Indian Institute of Soil Science, Bhopal has developed efficient techniques for nutrient enrichment in different organic manures including municipal solid wastes for efficient recycling of organic wastes for sustainable agriculture. Keeping in view the above, IISS, Bhopal organized a winter school on Efficient Farm Wastes Utilization for Sustainable Agriculture and Ensuring Soil and Produce Quality during 1-21 December 2009. Faculty members of the institute and the invited experts from other institutes shared their rich experiences with the participants through practical as well as theory classes. The invited papers from the faculty have been reviewed and brought out in the form of a book. This book contains very useful information on various on-farm and offfarm organic wastes being used for soil fertility management in INM and organic farming, nutrient enriched compost preparation, use of vermicomposting techniques for bio-degradation of organic wastes, conservation agriculture, and the effect of organic wastes on crop and soil quality, and soil carbon dynamics. We are confident that this publication will be quite useful to researchers, students, extension persons, policy makers and all those engaged in developing efficient nutrient management strategies for sustainable agriculture. We compliment all the faculty members from IISS, Bhopal and other institutions who have contributed valuable lecture notes. - Editors
About the Book The continuous use of high levels of chemical fertilizers is adversely affecting the sustainability of agricultural production and causing environmental pollution. There is a decline in the productivity of crop, despite the application of optimum levels of fertilizer inputs under assured irrigation. Constraint analysis has identified the declining organic mater status as a probable reason. It is in this context that the supplementation of organic alongwith