Impacts of bt maize on smallholder income in the Philippines
Issue Date
1-2012
Abstract
Bacillus thuringiensis (Bt) maize is the first genetically modified crop to be introduced to Philippine farmers. Since its commercialization in 2003, evidence has accumulated regarding the economic benefits of adopting Bt maize. Based on data collected from 466 farmers, this research focuses specifically on the selection and endogeneity bias that has not yet been explicitly addressed; it also tests the impacts of adoption on net farm income, off-farm income of the farmer, and total household income, including income from crops and livestock, off-farm income of the farmer, and income of all household members. Regression results are compared for OLS regress and two types of instrumental variables methods. Accounting for selfselection and endogeneity, adoption of Bt maize increases net farm income, off-farm income, and household income. The predicted probability that a household's income falls below the poverty line is lower among Bt maize adopters. However, we have not fully addressed placement bias. ©2012 AgBioForum.
Source or Periodical Title
AgBioForum
Volume
15
Issue
2
Page
152-162
Document Type
Article
Language
English
Subject
Adoption, Bt maize, Household income, Impact, Net farm income, Off-farm income, Philippines
Recommended Citation
Yorobe, J.M., Smale, M. (2012). Impacts of bt maize on smallholder income in the Philippines. AgBioForum, 15 (2), 152-162.
Digital Copy
yes