Resource-Conserving Agriculture Increases Yields in Developing Countries

J . N . P R E T T Y , * , † A . D . N O B L E , ‡ D . B O S S I O , § J . D I X O N , | R . E . H I N E , † F . W . T . P E N N I N G D E V R I E S , ⊥ A N D J . I . L . M O R I S O N † Department of Biological Sciences and Centre for Environment and Society, University of Essex, Wivenhoe Park, Colchester CO4 3SQ, U.K., International Water Management Institute (IWMI), P.O. Box 1025, Kasetsart University, Bangkok 10903, Thailand, International Water Management Institute (IWMI), P.O. Box 2075, Colombo, Sri Lanka, Impact Targeting and Assessment Program, CIMMYT, Apdo. Postal 6-641, 06600 Mexico, Mexico, and International Project Office for Monsoon Asia Integrated Regional Study, Institute for Atmospheric Sciences, Chinese Academy of Sciences, P.O. Box 9804, Beijing, China