A decade of Bt cotton in Chinese fields: assessing the direct effects and indirect externalities of Bt cotton adoption in China.
The objective of this study is to examine whether or not the gains from reduced spraying for bollworms are being sustained more than one decade after the initial adoption in 2007. Based on farm-level data collected by the authors in 1999-2007 in 16 villages from 4 provinces, this study shows that insecticides applied for controlling bollworms have declined. This analysis supports Chinese policy makers' decision to not require refuges of non-Bt cotton fields. It also suggests that past studies may have underestimated the benefits from adopting Bt technology.
Huang
JiKun
J
Center for Chinese Agricultural Policy, Institute of Geographical Sciences and Natural Resource Research, Chinese Academy of Sciences, Beijing, China. jkhuang.ccap@igsnrr.ac.cn
Mi
JianWei
J
Lin
Hai
H
Wang
ZiJun
Z
Chen
RuiJian
R
Hu
RuiFa
R
Rozelle
Scott
S
Pray
Carl
C
D001413:Bacillus thuringiensis; D001427:Bacterial Toxins; D002681:China; D003368:Gossypium; D007306:Insecticides
D001427:Bacterial Toxins; D007306:Insecticides