Development and Experiment of an Air-Assisted Sprayer for Vineyard Pesticide Application

Mingxiong Ou (), Yong Zhang, Minmin Wu, Chenyang Wang, Shiqun Dai, Ming Wang, Xiang Dong and Li Jiang
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Mingxiong Ou: School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
Yong Zhang: School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
Minmin Wu: School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
Chenyang Wang: School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
Shiqun Dai: School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
Ming Wang: School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
Xiang Dong: School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
Li Jiang: School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China

Agriculture, 2024, vol. 14, issue 12, 1-21

Abstract: This paper presents an air-assisted sprayer for vineyard pesticide application. The spraying unit was designed with two symmetrically arranged ports. The airflow velocity distribution of the sprayer was investigated using a combination of experimental validation and a computational fluid dynamics (CFD) model. The results of both the simulation and the experiment showed good agreement in airflow velocity, and the distribution was uniform. Both unilateral and bilateral spraying field experiments were conducted in this study. The unilateral spraying experiment showed that higher spray pressure and lower sprayer speed increased both total deposition coverage and spray penetration ( SP ), while shorter spray distances improved SP but decreased total deposition coverage. The optimal operational conditions for the sprayer were determined as follows: spray pressure of 0.40 MPa, sprayer speed of 0.83 m/s, and spray distance of 1.00 m. The results of the bilateral spraying field experiment indicated that the coefficient of variation ( CV ) for deposition coverage in Columns A, B, and C were 16.20%, 8.10%, and 15.47%, respectively. The CV s in Layers a, b, and c were 6.14%, 12.62%, and 6.74%, respectively. This result demonstrated that the deposition coverage distribution in the canopy was relatively uniform, and the air-assisted sprayer exhibited good spray penetration performance. This study demonstrates the effectiveness and potential of the air-assisted sprayer for vineyard pesticide application.

Keywords: air-assisted sprayer; computational fluid dynamics; deposition distribution; deposition coverage; spray penetration (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: 2024
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