Study on Spray Deposition Effect of a New High-Clearance Air-Assisted Electrostatic Sprayer

Mingxiong Ou, Shiqun Dai (), Xinbao Jing, Weidong Jia, Xiang Dong, Yunfei Wang and Minmin Wu
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Mingxiong Ou: School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
Shiqun Dai: School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
Xinbao Jing: China Foma (Group) Co., Ltd., Taizhou 225300, China
Weidong Jia: School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
Xiang Dong: School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
Yunfei Wang: School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
Minmin Wu: School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China

Agriculture, 2025, vol. 15, issue 13, 1-15

Abstract: This study evaluates the performance of a novel high-clearance air-assisted electrostatic sprayer designed for vineyards and investigates the impact of applied voltage on droplet deposition. This sprayer, which uses a new type of air-assisted electrostatic spray nozzle, could spray three rows of grapes at the same time, significantly improving work efficiency. Field test results show that the middle row of the high-clearance air-assisted electrostatic sprayer deposition effect was better than the left and right rows, and the minimum droplet deposition density inside the grape canopy was 26.4 deposits/cm 2 . The droplet deposition effects of electrostatic spraying were effectively improved, and the average droplet deposition density of the canopy increased by 15.72%. Electrostatic spraying improves the deposition on the outer canopy but reduces deposition on the inner canopy, so electrostatic spraying reduces the penetration of droplets into the canopy. The sprayer’s design proves effective for large-scale operations, offering insights into electrostatic spray technology’s role in precision agriculture.

Keywords: air-assisted electrostatic; droplet deposition; spray penetration coefficient; applied voltage (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2025
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