| 来源类型 | Working Paper |
| 规范类型 | 报告 |
| DOI | 10.3386/w23519 |
| 来源ID | Working Paper 23519 |
| Heterogeneous Yield Impacts from Adoption of Genetically Engineered Corn and the Importance of Controlling for Weather | |
| Jayson L. Lusk; Jesse Tack; Nathan P. Hendricks | |
| 发表日期 | 2017-06-19 |
| 出版年 | 2017 |
| 语种 | 英语 |
| 摘要 | Concern about declining growth in crop yields has renewed debates about the ability of biotechnology to promote food security. While numerous experimental and farm-level studies have found that adoption of genetically engineered crops has been associated with yield gains, aggregate and cross-country comparisons often seem to show little effect, raising questions about the size and generalizability of the effect. This paper attempts to resolve this conundrum using a panel of United States county-level corn yields from 1980 to 2015 in conjunction with data on adoption of genetically engineered crops, weather, and soil characteristics. Our panel data contain just over 28,000 observations spanning roughly 800 counties. We show that changing weather patterns confound simple analyses of trend yield, and only after controlling for weather do we find that genetically engineered crops have increased yields above trend. There is marked heterogeneity in the effect of adoption of genetically engineered crops across location partially explained by differential soil characteristics which may be related to insect pressure. While adoption of genetically engineered crops has the potential to mitigate downside risks from weeds and insects, we find no effects of adoption on yield variability nor do we find that adoption of presently available genetically engineered crops has led to increased resilience to heat or water stress. On average, across all counties, we find adoption of GE corn was associated with a 17 percent increase in corn yield. |
| 主题 | Econometrics ; Estimation Methods ; Development and Growth ; Growth and Productivity ; Environmental and Resource Economics ; Agriculture |
| URL | https://www.nber.org/papers/w23519 |
| 来源智库 | National Bureau of Economic Research (United States) |
| 引用统计 | |
| 资源类型 | 智库出版物 |
| 条目标识符 | http://119.78.100.153/handle/2XGU8XDN/581192 |
| 推荐引用方式 GB/T 7714 | Jayson L. Lusk,Jesse Tack,Nathan P. Hendricks. Heterogeneous Yield Impacts from Adoption of Genetically Engineered Corn and the Importance of Controlling for Weather. 2017. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 资源类型 | 版本类型 | 开放类型 | 使用许可 | ||
| w23519.pdf（1006KB） | 智库出版物 | 限制开放 | CC BY-NC-SA | 浏览 | ||
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