This book explores the latest concepts and models of the causes of nutrient imbalances, including the role of different spatial scales, and examines ways to quantify and manage nutrient levels. It surveys the increasing legislation on nutrient management and stresses the growing need for sound methods. Case studies range from high recycling fish farms in eastern Asia to nutrient flow monitoring in Kenyan tea/maize farms, the dairy sector in New Zealand, and ecological farming in Switzerland. The book concludes with a discussion of future directions for global-level research in soil fertility management and nutrient flow analysis.
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