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http://dx.doi.org/10.5389/KSAE.2021.63.5.039

Analyzing Drift Patterns of Spray Booms with Different Nozzle Types and Working Pressures in Wind Tunnel  

Park, Jinseon (AgriBio Institute of Climate Change Management, Chonnam National University)
Lee, Se-Yeon (Department of Rural and Bio-systems Engineering, Education and Research Unit for Climate-Smart Reclaimed-Tideland Agriculture (BK21 four), Chonnam National University)
Choi, Lak-Yeong (Department of Rural and Bio-systems Engineering, Education and Research Unit for Climate-Smart Reclaimed-Tideland Agriculture (BK21 four), Chonnam National University)
Jeong, Hanna (Department of Rural and Bio-systems Engineering, Education and Research Unit for Climate-Smart Reclaimed-Tideland Agriculture (BK21 four), Chonnam National University)
Noh, Hyun Ho (Residual Agrochemical Assessment Division, National Institute of Agricultural Sciences, Rural Development Administration)
Yu, Seung-Hwa (Department of Agricultural Engineering, National Institute of Agricultural Sciences, Rural Development Administration)
Song, Hosung (Department of Agricultural Engineering, National Institute of Agricultural Sciences, Rural Development Administration)
Hong, Se-woon (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)
Publication Information
Journal of The Korean Society of Agricultural Engineers / v.63, no.5, 2021 , pp. 39-47 More about this Journal
Abstract
With rising concerns about pesticide spray drifts, this study analyzed the drift patterns of two typically-used nozzles, XR nozzle and AI nozzle, concerning their working pressures and wind speeds by wind tunnel experiments. AI nozzle showed low drift potential with larger droplet sizes compared to XR nozzle. Airborne and deposition drifts of XR nozzle were two times higher than those of AI nozzle under high wind speeds (≥2 m s-1). In all cases, higher working pressures decreased the droplet sizes, thereby increasing the airborne and deposition drifts. Higher wind speeds also resulted in more airborne drifts, while ground deposition was increased under lower wind speeds. These effects of working pressures and wind speeds on the airborne and deposition drifts were observed at leeward distances less than 4 m from the nozzles. However, the airborne and deposition drifts were barely affected by the working pressures and wind speeds at leeward distances more than 11 m. The measurements were fitted to regression models of the drift curve with acceptable R2 values greater than 0.8, demonstrating that further studies will be useful to settle domestic issues of spray drifts.
Keywords
Spray drift; pesticide; airborne droplet; ground deposition; total organic carbon; nylon screen; wind tunnel;
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