文献类型: 会议论文
第一作者: Jens C. Streibig
作者: Jens C. Streibig 1 ; Jerry M. Green 2 ;
作者机构: 1.Department of Plant and Environmental Sciences, University of Copenhagen, Hoejbakkegaard Allé 13, DK-2630 Taastrup, Copenhagen, Denmark
2.Green Ways Consulting LLC, Landenberg, Pennsylvania 19350, United States
关键词: Dose;Drift;Non-Target Organisms
会议名称: Symposium on Pesticide Dose: Effects on the Environment and Target and Non-Target Organisms
主办单位:
页码: 25-45
摘要: This chapter deals with dose-response models to describe the relationship between a dose and its effect on target and non-target organisms, often after the dose has been diluted by drift. We define pesticide drift and describe the endeavor to link effects to an arbitrary point outside the field. Lastly, we analyze data from published papers on non-target plants to determine how they contribute to understand the biological effect of herbicide drift. The research bottleneck is in the drift model and the way non-target plants are affected. The variation in determining ED_x (Effective Dose at a response level x) among species is often so large that sensitivity of species cannot be unraveled. In particular, when herbicides with large potency differences are included in a study, the effect of herbicides usually stands out, while other factors are not significant. An aspect currently in the news is the novel use of auxin herbicides on genetically modified auxin herbicide-tolerant crops and the problems that can occur when large areas are sprayed nearby very sensitive non-target plants. One additional aspect is that when using "wild species" as test plants, ED_x levels will vary much more than when using crops and weed species that are genetically more uniform.
分类号: X592-532
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