Economic and Environmental Impact Transgenically Modified Cotton Comparative with Synthetic Chemicals for Insect Control
Economic and Environmental Impact Transgenically Modified Cotton Comparative with Synthetic Chemicals for Insect Control作者机构：Beneficial Insect Research Unit Kika de la Garza Subtropical Agricultural Research Center Agricultural Research ServiceUnited States Department of Agriculture Weslaeo Texas 78596 USA Department of Entomology Texas A&M University-Kingsville Citrus Center Weslaco Texas 78596 USA
出 版 物：《Journal of Agricultural Science and Technology(B)》 (农业科学与技术（B）)
年 卷 期：2012年第2卷第7期
页 面：750-757页
学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 08[工学] 09[农学] 0901[农学-作物学] 0713[理学-生态学]
主 题：Bacillus thuringiensis (Bt) traits and non-Bt cotton noctuid control conventional insecticides revenue and profit.
摘 要：This article combines both a review of the literature and original data from our research. The comparative efficacy of Bacillus thuringiensis （Berliner） traits Bollgard, Bollgard II, WideStrike, and non-Bt expressing cotton, Gossypium hirsutum L., for control of the noctuid complex of bollworm, Helicoverpa zea （Boddie）; fall armyworm, Spodopterafrugiperda （J.E. Smith）; beet armyworm, Spodoptera exigua （Htibner）; and cabbage looper, Trichoplusia ni （Hiibner）, were evaluated in the Lower Rio Grande Valley of Texas during 2005-2009. Noctuid larval survival and damage to leaves on non-Bt cotton were 3.6-fold greater than on Bollgard II or WideStrike cotton and 1.5-fold greater than on cotton varieties with the Bollgard trait. Transgenic cotton has reduced the need for conventional insecticides with benefits to human health and the environment. The revenue differences between Bt and conventional cotton for last four years in LRGV of Texas was 214.35/ha and profit about 94.95/ha. We also analyzed cotton noctuid losses between Bt and conventionally grown cotton in the USA summary of all states and Texas summary of all regions.
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