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Pesticide drift
Pesticide drift refers to the unintentional diffusion of pesticides and the potential negative effects of pesticide application—including: off-target contamination due to spray drift as well as runoff from plants/soil.〔 This can lead to damage in human health, environmental contamination, and property damage.〔〔
==Types==
With placement (localised) spraying of broad spectrum pesticides, wind drift must be minimized, and considerable efforts have been made recently to quantify and control spray drift from hydraulic nozzles.〔Hewitt, A.J., Spray drift: impact of requirements to protect the environment, Crop Protection 19 (2000) p 623-627〕 Conversely, wind drift is also an efficient mechanism for moving droplets of an appropriate size range to their targets over a wide area with ultra-low volume (ULV) spraying.
Himel (1974) made a distinction between exo-drift (the transfer of spray out of the target area) and endo-drift, where the active ingredient (AI) in droplets falls into the target area, but does not reach the biological target. Endo-drift is volumetrically more significant and may therefore cause greater ecological contamination (e.g. where chemical pesticides pollute ground water).
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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