气候变化领域集成服务门户(CCPortal): Environmental and economic concerns surrounding restrictions on glyphosate use in corn

CCPortal

DOI	10.1073/pnas.2017470118
	Environmental and economic concerns surrounding restrictions on glyphosate use in corn
	Ye Z.; Wu F.; Hennessy D.A.
发表日期	2021
ISSN	0027-8424
卷号	118 期号:18
英文摘要	Since the commercialization of transgenic glyphosate-tolerant (GT) crops in the mid-1990s, glyphosate has become the dominant herbicide to control weeds in corn, soybean, and other crops in the United States and elsewhere. However, recent public concerns over its potential carcinogenicity in humans have generated calls for glyphosate-restricting policies. Should a policy to restrict glyphosate use, such as a glyphosate tax, be implemented? The decision involves two types of tradeoffs: human health and environmental (HH-E) impacts versus market economic impacts, and the use of glyphosate versus alternative herbicides, where the alternatives potentially have more serious adverse HH-E effects. Accounting for farmers' weed management choices, we provide empirical evaluation of the HH-E welfare and market economic welfare effects of a glyphosate use restriction policy on US corn production. Under a glyphosate tax, farmers would substitute glyphosate for a combination of other herbicides. Should a 10% glyphosate tax be imposed, then the most conservative welfare estimate is a net HH-E welfare gain with a monetized value of US$6 million per annum but also a net market economic loss of US$98 million per annum in the United States, which translates into a net loss in social welfare. This result of overall welfare loss is robust to a wide range of tax rates considered, from 10 to 50%, and to multiple scenarios of glyphosate's HH-E effects, which are the primary sources of uncertainties about glyphosate's effects. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Cost-benefit analysis; Economic tradeoffs; Genetically modified organisms; Toxicity; Weed control
语种	英语
scopus关键词	glyphosate; Article; conservation tillage; correlational study; environmental decision making; environmental economics; environmental exposure; environmental factor; environmental impact; environmental policy; maize; nonhuman; priority journal
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/238742
作者单位	Department of Agricultural, Food, and Resource Economics, Michigan State University, East Lansing, MI 48824, United States; Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI 48824, United States
推荐引用方式 GB/T 7714	Ye Z.,Wu F.,Hennessy D.A.. Environmental and economic concerns surrounding restrictions on glyphosate use in corn[J],2021,118(18).
APA	Ye Z.,Wu F.,&Hennessy D.A..(2021).Environmental and economic concerns surrounding restrictions on glyphosate use in corn.Proceedings of the National Academy of Sciences of the United States of America,118(18).
MLA	Ye Z.,et al."Environmental and economic concerns surrounding restrictions on glyphosate use in corn".Proceedings of the National Academy of Sciences of the United States of America 118.18(2021).