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무인항공살포용 농약 Ametoctradin+Dimethomorph 47(27+20)% 액상수화제의 풍향 및 풍속에 의한 비산량 측정
노현호(Hyun Ho Noh),김창조(Chang Jo Kim),문병철(Byeong-chul Moon),노진호(Jin-ho Ro),김단비(Danbi Kim),오민석(Min-seok Oh),권혜영(Hyeyoung Kwon),김흥태(Hueng Tae Kim),경기성(Kee Sung Kyung) 한국농약과학회 2020 농약과학회지 Vol.24 No.1
This study was carried out to determine pattern of pesticide drift by unmanned aerial spraying with agricultural multi-copter. The test pesticides were ametoctradin+dimethomorph 47(27+20)% SC that is used for protection to shallot from downy mildew disease in Korea. In order to measure the amount of drift, cellulose patches were placed up the outside of treatment plot in 8 direction from 3 m to 15 m and then sprayed pesticide. The pesticide solution was prepared in multi-copter’s reservoir at 16-fold diluted (i,g, recommended) concentration of the active ingredient. The spraying altitude and speed were 2 m and 3 m/s, respectively. The AWS (auto weather stations) was set to measure climatic conditions, such as wind direction and speed at intervals of 5 seconds, during the application period. The patches were taken immediately after spraying pesticides and shallots closest to the patch were collected and then analyzed for the pesticide residues. The pesticide residue analysis was performed by QuEChERS method. Average recoveries of ametoctradin and dimethomorph in patch and shallot were found to be 82.07-105.30%. As a result, ametoctradin and dimethomorph were drifted to 5 m at a wind speed of 0 m/s. At 2.5 m/s, pesticides were drifted up to 10 m in the forward direction of the wind, indicating that pesticide drift was determined caused by wind direction and speed.