Journal
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
Volume 108, Issue 16, Pages 6399-6404Publisher
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1101419108
Keywords
environmental integrity; nutrient use efficiency; crop yield; nitrogen fertilization; smallholder farm
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Funding
- Chinese National Basic Research Program [2009CB118606]
- Innovative Group from the National Natural Science Foundation of China [30821003]
- National Maize Production System in China
- Special Fund for Agricultural Profession [200803030]
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China and other rapidly developing economies face the dual challenge of substantially increasing yields of cereal grains while at the same time reducing the very substantial environmental impacts of intensive agriculture. We used a model-driven integrated soil-crop system management approach to develop a maize production system that achieved mean maize yields of 13.0 t ha(-1) on 66 on-farm experimental plots-nearly twice the yield of current farmers' practices-with no increase in N fertilizer use. Such integrated soil-crop system management systems represent a priority for agricultural research and implementation, especially in rapidly growing economies.
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