Optimization of working parameters for 3MGY-200 axial air-assisted sprayer in kiwifruit orchards

Chenchen Gu,Guanting Pan,Yingjun Pu,Zhijie Liu,Fuzeng Yang

doi:10.25165/j.ijabe.20201302.5078

Abstract

Axial air-assisted sprayers can distribute pesticides efficiently in kiwifruit orchards. Because of improper parameter settings, most sprayers deliver either too much or too little pesticide. To identify appropriate sprayer parameters for kiwifruit trees, the vertical distribution profiles of the applied liquid spray were examined in this study. The effects of spray fan speed (SFS), spray pressure (SP) and spray distance (SD) on the distributions of the sprayed liquid in the vertical profiles were studied. Combined actions of the above parameters were systematically analysed using the quadratic general rotary design test method. Regression equations for the spray liquid distributions and working factors are presented. Field confirmation experiments were carried out to optimize the parameters. Data analysis showed that the optional sprayer working parameters are those of Group 3, with an SFS equal to 1900 r/min and SP equal to 3.25 MPa. The results of this study provide a reference for future applications of this type of axial air-assisted sprayer in kiwifruit orchards. Keywords: sprayer parameters, quadratic general rotary unitized design, regression equation, optimization, kiwifruit tree DOI: 10.25165/j.ijabe.20201302. Citation: Gu C C, Liu Z J, Pan G T, Pu Y J, Yang F Z. Optimization of working parameters for 3MGY-200 axial air-assisted sprayer in kiwifruit orchards. Int J Agric & Biol Eng, 2020; 13(2): 81–91.

Highlights

Kiwifruit are superior to other commonly consumed fruit in terms of nutrition, health benefits, and consumer appeal[1]
The results showed that low-drift equipment reduced the minimal potential for spray drift by 38%, and hedgerows could provide a mitigation of 98%; the last row treated with or without air-assisted mitigation had drift reduction values of 70% and 74%, respectively[21]
According to the three charts shown below, the maximal volume did not appear with the highest spray fan speed (SFS)

Summary

Introduction

Kiwifruit are superior to other commonly consumed fruit in terms of nutrition, health benefits, and consumer appeal[1]. China’s kiwifruit tree planting area was the world’s largest, at approximately 230 million hm to 250 million hectares prior to 2017[2]. In Shaanxi Province, both the planting area and output are ranked at the top worldwide[3]. There have been some questions regarding the kiwifruit industry, such as its lack of dealing with major diseases and insects, and its comprehensive control and prevention technologies. Pest control is one of the industry’s most influential aspects. Disease in kiwifruit orchards, including root rot, Icerya purchasi, and so on, can cause major destruction and have caused fruit farmers to incur serious economic losses[2]

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Conclusion