Effect of farm management practices in the Bt toxin production by Bt cotton: evidence from farm fields in China
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- 作者：Jikun Huang (1) (8)
Jianwei Mi (1) (2) (8)
Ruijian Chen (1) (3)
Honghua Su (4)
Kongming Wu (5)
Fangbin Qiao (6)
Ruifa Hu (1) (7) (8) - 关键词：Expression of Bt toxin ; Fertilizer use ; Farm management ; Bt cotton ; China
- 刊名：Transgenic Research
- 出版年：2014
- 出版时间：June 2014
- 年：2014
- 卷：23
- 期：3
- 页码：397-406
- 全文大小：
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Jianwei Mi (1) (2) (8)
Ruijian Chen (1) (3)
Honghua Su (4)
Kongming Wu (5)
Fangbin Qiao (6)
Ruifa Hu (1) (7) (8)
1. Center for Chinese Agricultural Policy, Chinese Academy of Sciences, Beijing, 110101, China
8. Institute of Geographic Sciences and Natural Resource Research, Chinese Academy of Sciences, Beijing, 110101, China
2. Economic Prediction Department, National Information Center, Beijing, 100045, China
3. Foreign Economic Corporation Center, Ministry of Agriculture, P. R. China, Beijing, 100125, China
4. School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, China
5. State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
6. China Economics and Management Academy, Central University of Finance and Economics, Beijing, 100081, China
7. School of Management of Economics, Beijing Institute of Technology, Beijing, 100081, China - ISSN：1573-9368
文摘
Based on farm field plot level survey data and laboratory test, we examine the determinants of the expression of Bt toxin in China’s Bt cotton production. The results show that the expression of Bt toxin differs significantly among varieties. Even for the same variety the expression of Bt toxin also varies substantially among villages and among farmers in the same village. Econometric analyses show that after controlling for the effects of varieties and locations (or villages), farm management, particular applications of phosphate and potash fertilizers, and manure, has significant positive effects on Bt toxin expression in farmer’s fields. In contrast to previous studies which showed that nitrogen fertilizer has a positive impact on expression of Bt toxin, this study shows that nitrogen fertilizer has no significant impact on expression of Bt toxin in farmer’s fields. On the other hand, the expression of Bt toxin has a positive relationship with phosphate fertilizer, potash fertilizer and manure application.