With rising concerns about pesticide spray drift by aerial application, this study attempt to evaluate aerodynamic property and collection efficiency of spray drift according to the leaf area index (LAI) of crop for preventing undesirable pesticide contamination by the spray-drift tunnel experiment. The collection efficiency of the plant with ‘Low’ LAI was measured at 16.13% at a wind speed of 1 m·s-1. As the wind speed increased to 2 m·s-1, the collection efficiency of plant with the same LAI level increased 1.80 times higher to 29.06%. For the ‘Medium’ level LAI, the collection efficiency was 24.42% and 43.06% at wind speed of 1 m·s-1 and 2 m·s-1, respectively. For the ‘High’ level LAI, it also increased 1.24 times higher as the wind speed increased. The measured results indicated that the collection of spray droplets by leaves were increased with LAI and wind speed. This also implied that dense leaves would have more advantages for preventing the drift of airborne spray droplets. Aerodynamic properties also tended to increase as the LAI increased, and the regression analysis of quadric equation and power law equation showed high explanatory of 0.96－0.99.

Abstract
서 론
재료 및 방법
    1. 엽면적지수 측정 방법
    2. 비산 챔버 원리 및 제작
    3. 비산 챔버를 활용한 LAI에 따른 식물 비산 특성 측정방법
    4. 비산 챔버를 활용한 식물의 공기투과저항력 측정 방법
결과 및 고찰
    1. 엽면적지수 산정 결과
    2. 비산 챔버를 활용한 LAI에 따른 식물의 비산 약액부착 효율 측정
    3. 비산 챔버를 활용한 식물의 공기 투과 저항성 측정
적 요
사 사
Literature Cited

• 박진선(전남대학교 농업생명과학대학 기후변화대응농생명연구소 연구교수) | Jinseon Park (Research Professor, AgriBio Institute of Climate Change Management, Chonnam National University)
• 이세연(전남대학교 농업생명과학대학 지역․바이오시스템공학과 & BK21기후지능형간척지농업교육연구팀 박사과정) | Se-Yeon Lee (Graduate Student, Department of Rural and Bio-systems Engineering; Education and Research Unit for Climate-Smart Reclaimed-Tideland Agriculture (BK21 four), Chonnam National University)
• 최락영(전남대학교 농업생명과학대학 지역․바이오시스템공학과 & BK21기후지능형간척지농업교육연구팀 박사과정) | Lak-Yeong Choi (Graduate Student, Department of Rural and Bio-systems Engineering; Education and Research Unit for Climate-Smart Reclaimed-Tideland Agriculture (BK21 four), Chonnam National University)
• 홍세운(전남대학교 농업생명과학대학 지역․바이오시스템공학과 BK21기후지능형간척지농업교육연구팀 부교수) | Se-woon Hong (Associate Professor, Department of Rural and Bio-systems Engineering; AgriBio Institute of Climate Change Management,; Education and Research Unit for Climate-Smart Reclaimed-Tideland Agriculture (BK21 four), Chonnam National University) Corresponding Author