The atmospheric concentrations of pesticides applied to paddy fields using unmanned, remote controlled helicopter were estimated with the computer simulation system combined AgDRIFT�and CALPUFF.  In the first part of this system, the AgDRIFT�is for the accurate prediction of deposition of sprayed pesticides released from unmanned helicopter. In the second part, the CALPUFF is an advanced, integrated Gaussian puff modeling system for the simulation of atmospheric pesticide dispersion coupled with the volatilization of pesticide to the atmosphere from paddy fields.  Comparison of the simulation and the monitoring results gave excellent agreements for 28 days' atmospheric concentrations of phthalide and fenitrothion. Additionally, the simulation was carried out for the 30 most frequently used pesticides in Japanese paddy fields with unmanned helicopter using the worst-case scenario.  The overall conclusion from these evaluation studies is that this simulation system is a useful model for estimating the concentrations of pesticides from unmanned helicopter.

Exposure levels evaluation of pesticides sprayed by unmanned helicopter

248th National Meeting (2014)

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