Assessing insecticide drift during and after center-pivot chemigation to corn using glass plates and gauze pads

摘要

Insecticide application to corn through center-pivot irrigation systems (chemigation) is a common practice. According to Kohl et al. (1987), drift during and subsequent to chemigation may be a potential problem. Published data are available on pesticide drift from conventional applications (Bode et al. 1976; Byass and Lake 1977; Draper et al. 1981; Draper and Street 1981; Nordby and Skuterud 1975; Smith et al. 1982; Threadgill and Smith 1975; Ware et al. 1969, 1969, 1970; Yates et al. 1974). However, paucity of data exist regarding insecticide drift from chemigation (Byers et al. 1993). This study was undertaken to: a) measure drift using gauze pads and glass plates during and subsequent to chemigation of chlorpyrifos, permethrin, and carbaryl to corn; and b) estimate potential human exposure from drifted insecticides. [References: 21]