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Drift and Distribution Properties of Pesticide Spray Solution Applied Aerially by manned-Helicopter  

Jin, Yong-Duk (Harzardous Substances Division, National Academy of Agricultural Science, RDA)
Lee, Hee-Dong (Pesticide Safety Division, National Academy of Agricultural Science, RDA)
Park, Yeon-Ki (Pesticide Safety Division, National Academy of Agricultural Science, RDA)
Kim, Jin-Bae (Harzardous Substances Division, National Academy of Agricultural Science, RDA)
Kwon, Oh-Kyung (Harzardous Substances Division, National Academy of Agricultural Science, RDA)
Publication Information
The Korean Journal of Pesticide Science / v.12, no.4, 2008 , pp. 351-356 More about this Journal
Abstract
This study was carried out to assess adoptability and environment impacts of ultra low volume (ULV) pesticide spray solutions aerially sprayed by manned-helicopter. Uniformity of the deposited amount in paddy fields was uneven, showing $3.1{\sim}4.7$ times differences among surveyed sites. Drifting distance of aerially sprayed droplets from the target area was within 30 m in the wind direction and 20 m in the opposite direction. Most of the aerially sprayed pesticides were deposited in/on rice plants, while those in submerged paddy water and soil were relatively small. The degradation rate of the deposited pesticides was in the decreasing order of rice plants, paddy water and soil. Soil residues of pesticides in the aerially sprayed rice paddy fields after harvest ranged from non-detected to 0.201 mg/kg. However, no pesticides were detected in brown rice and rice straw. No phytotoxic symtoms were observed in rice plants and nearby non-target crops by the sprayed pesticides.
Keywords
pesticide; ULV; aerial application; helicopter; drift; phytotoxicity;
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Times Cited By KSCI : 1  (Citation Analysis)
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