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Written for professionals and students in agricultural fields, this book addresses current problems associated with water supplies required for agricultural purposes and food production. It focuses on innovative technologies for improving soil water availability, enhancing water use efficiency, and using productive irrigation systems. The book discusses root-zone water conservation strategies; growing varieties of crops that can tolerate droughts; and using cropping systems that enhance adaptation to changing climate, among other topics. It presents techniques that conserve water in the root zone and discusses remote sensing techniques to assess soil water regime and predict drought on a regional scale.