Risk effects of GM corn: Evidence from crop insurance outcomes and high-dimensional methods

• 全文链接

转基因玉米的风险影响：来自农作物保险结果和高维方法的证据

关键词：

来源：

Agricultural Economics

全文链接：

//agri.nais.net.cn/topic/downloadFile/0333bb2a-423b-413c-80f4-1d9a889899ac

来源地址：

https://onlinelibrary.wiley.com/doi/full/10.1111/agec.12757

资源所属：

一带一路农业专题

类型：

学术文献

语种：

英语

原文发布日期：

2022-12-30

摘要：

This study evaluates whether genetically modified (GM) corn hybrids with rootworm resistant traits (GM-RW) have lower yield risk. A crop insurance actuarial performance measure, the loss cost ratio (LCR), is used to represent yield risk. High-dimensional methods are utilized in this study to maintain parsimony in the empirical specification, and facilitate estimation. Specifically, we employ the Cluster-Lasso (cluster-least absolute shrinkage and selection operator) procedure. This method produces uniformly valid inference on the main variable of interest (i.e., the GM-RW variable) in a high-dimensional panel data setting even in the presence of heteroskedastic, non-Gaussian, and clustered error structures. After controlling for a large set of potential weather confounders using Cluster-Lasso, we find consistent evidence that GM corn hybrids with rootworm resistant traits have lower yield risk.