Title: Field based evaluation of Han-Mercury1 UAV sprayer: droplet deposition characteristics at various canopy heights of soybean crop

Authors: He Li; Yahui Zhang; Tahir Shahid Ali; Kaifei Zhang

Addresses: Material Energy Cooperation and Innovation Center, College of Mechanical and Electrical Engineering, Henan Agricultural University, Henan, Zhengzhou, 450002, China ' Material Energy Cooperation and Innovation Center, College of Mechanical and Electrical Engineering, Henan Agricultural University, Henan, Zhengzhou, 450002, China ' Material Energy Cooperation and Innovation Center, College of Mechanical and Electrical Engineering, Henan Agricultural University, Henan, Zhengzhou, 450002, China ' Material Energy Cooperation and Innovation Center, College of Mechanical and Electrical Engineering, Henan Agricultural University, Henan, Zhengzhou, 450002, China

Abstract: Modern agriculture is precision oriented and more focused on efficient usage of plant protection unmanned aerial vehicles (PPUAVs) for spray operations. It is of great importance on many fundamental levels to know about optimum spraying environments of UAV to reduce pesticide losses by drifting and ground dropping. This article concludes about best operating conditions for single rotor UAV by taking Han-Mercury1 as a model equipment. Experimental datasets derived by linear regression and response surface method described the key factors affecting droplet deposition concentration. Variables included fluctuating canopy heights A(n)-1, A(n)-2 and A(n)-3, flight velocity (3, 5 and 7 m/s), flight control AIDS and carmine tracer. Regularity in droplet uniformity and even deposition under interaction of variables was obtained for summer soybean (Glycine max L.). This paper has systematically analysed factors that affect the operation effect of multirotor eppo. A comprehensive model proposed by this work could be helpful in future utilisation of UAVs for plant protection.

Keywords: UAV sprayer; deposition concentration; deposition uniformity; flight height and speed; flying AIDS; plant protection; soybean pest control; Han-Mercury1 UAV; drifting losses; droplet uniformity.

DOI: 10.1504/IJEP.2020.117785

International Journal of Environment and Pollution, 2020 Vol.67 No.2/3/4, pp.182 - 196

Received: 30 Mar 2020
Accepted: 21 Nov 2020
Published online: 24 Sep 2021 *

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