Data Appendix Available Online A data appendix to replicate main results is available in the online version of this article.
Which farmers benefit the most from Bt corn adoption? Estimating heterogeneity effects in the Philippines
Article first published online: 8 JAN 2013
© 2013 International Association of Agricultural Economists
Volume 44, Issue 2, pages 231–239, March 2013
How to Cite
Mutuc, M., Rejesus, R. M. and Yorobe, Jr., J. M. (2013), Which farmers benefit the most from Bt corn adoption? Estimating heterogeneity effects in the Philippines. Agricultural Economics, 44: 231–239. doi: 10.1111/agec.12006
- Issue published online: 4 MAR 2013
- Article first published online: 8 JAN 2013
- Received 23 July 2012; received in revised form 22 October 2012; accepted 15 November 2012
- Heterogeneous treatment effects;
- Propensity score;
The potential contributions of new biotechnologies to sustainable food and income security have been the subject of widespread discussions around the turn of the 21st century. But distributional issues of which segments of adopters of genetically modified (GM) crops benefit the most have not been given ample attention). Using propensity scores, we apply the (a) stratification-multilevel method of estimating heterogeneous treatment effects; and the (b) matching-smoothing method of estimating heterogeneous treatment effects proposed by Xie et al. We find that the incidence of higher yields, lower insecticide use, and reduced seed utilization in the Philippines diminishes progressively as a farmer's propensity to adopt Bt corn increases. Farmers with a low propensity to adopt Bt are those who farm smaller, nonirrigated farms located farther from seed suppliers and farmers without previous training on pest identification. In most cases, while these farmers are typically poorer farmers in smaller parcels, cannot afford irrigation and are situated in remote areas away from easily accessible seed suppliers, there is no evidence, however, that profits differ across farmers with varying propensities to adopt the Bt variety.