About the Authors

Andrew Nelson

Affiliation International Rice Research Institute, Metro Manila, Philippines

Kenneth M. Chomitz


Affiliation Independent Evaluation Group, World Bank, Washington, D. C., United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: KMC AN. Performed the experiments: AN. Analyzed the data: KMC AN. Wrote the paper: KMC AN.