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Meeting South Asia's future food requirements from rice-wheat cropping systems: priority issues facing researchers in the post-green revolution era
The importance of rice-wheat cropping systems in meeting present and future food needs in South Asia is reviewed. Evidence from a number of factor productivity studies, which analyze yield trends after adjusting for changes ...
Low use of fertilizers and low productivity in Sub-Saharan Africa
Factors related to the low use of fertilizers and the resulting low agricultural productivity in sub-Saharan Africa are reviewed. The importance of inorganic fertilizers and agricultural research to improving soil fertility ...