Droplet deposition and spatial drift distribution characteristics of aerial spraying based on the determination of effective swath

Yao, Weixiang; Guo, Shuang; Yu, Fenghua; Du, Wenli; Meng, Yali; Wang, Juan; Chen, Pengchao; Liang, Xiaowen; Xu, Tongyu; Lan, Yubin

doi:10.33440/j.ijpaa.20200401.145

Cited by 3 publications

(3 citation statements)

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“…Yao et al [33] compared the effective range and flow field distribution of an AS350B3e helicopter in four different flight-speed ranges and observed the changes in droplet drift after adding aerial adjuvant. They found that under the same operating conditions, droplet drift was reduced by 33.94% with aerial adjuvant.…”

Section: Electrostatic Sprayingmentioning

confidence: 99%

Development Status and Key Technologies of Plant Protection UAVs in China: A Review

Zhang

Yang

et al. 2022

Drones

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Plant protection unmanned aerial vehicles (UAVs) play a crucial role in agricultural aviation services. In recent years, plant protection UAVs, which improve the accuracy and eco-friendliness of agricultural techniques, have been used to overcome the shortcomings of traditional agricultural operations. First, this paper introduces the development scale, main types, and operation scenarios of China’s plant protection UAVs. Subsequently, the key technologies of plant protection UAVs, such as precision autonomous flight control, pesticide spraying, drift control, and spraying quality measurement technologies, are reviewed. Next, the emergent technologies of plant protection UAVs are studied and analyzed with a focus on better spray effects, calculation models of droplet drift, controllable droplet size atomization technology, droplet drift detection technology, and droplet deposition quality detection technology in the application of plant protection UAVs. Moreover, the technologies of plant protection UAV application are summarized and future research prospects are presented, offering ideas for follow-up research on the key technologies of plant protection UAVs and encouraging agricultural production management to move toward better efficiency, eco-friendliness, and accuracy.

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Section: Electrostatic Sprayingmentioning

confidence: 99%

Development Status and Key Technologies of Plant Protection UAVs in China: A Review

Zhang

Yang

et al. 2022

Drones

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“…Drone usage has the advantage of having a lower payload capacity, carrying out spraying punctually (Khan et al, 2021). It also reduces the rate of health-related problems, environmental problems, reduces the number of field workers and the farmer's workload, which is a significant part of the agricultural revolution (Liu et al, 2021;Rahman et al, 2021;Yao et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Impact of sprayer drone flight height on droplet spectrum in mountainous coffee plantation

Souza

Portes

Silva

et al. 2022

Rev. bras. eng. agríc. ambient.

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Weather conditions and sprayer operating parameters influence spray quality. Unmanned aerial vehicles are considered a modern, useful, and very efficient technological tool in the application of pesticides, as they carry out punctual spraying, and reduce environmental and public health problems. The objective of this study was to characterize the spraying quality carried out with an unmanned aerial vehicle as a function of flight height and target position in a coffee plantation in a mountainous region. Three flight heights (2.5, 3.0, and 4.0 m) were used, and the targets were placed at the top and bottom of the plant. For each plant, six water sensitive papers were placed on top of the plant and six were placed at the bottom. CIR 1.5 software was applied to determine the coverage percentage, drop density, volume median diameter, volumetric diameter corresponding to 10 and 90%, numerical median diameter, and relative amplitude. The results showed that the flight height only influenced the parameters of the volumetric diameter corresponding to 10% of the volume, numerical median diameter, and coverage percentage. The target position on the canopy influenced all the evaluated spraying parameters. In mountainous coffee plantations, the spraying system using unmanned aerial vehicle spraying is more efficient for the lower part of the plant.

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“…The drift and distribution of droplets depend on the airflow distribution characteristics of the UAV and the droplet size of the nozzle, which is directly related to the control effect of pesticides ( Kumar et al, 2018 ; Sarghini et al, 2019 ). For spray droplets of different droplet sizes, droplets with small size more easily drift ( Wang X. et al, 2018 ; Yao et al, 2021 ).…”

Section: Techniques For Improving the Deposition Effectmentioning

confidence: 99%

Research on Methods Decreasing Pesticide Waste Based on Plant Protection Unmanned Aerial Vehicles: A Review

Kaizu

Huang

et al. 2022

Front. Plant Sci.

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In plant protection, the increasing maturity of unmanned aerial vehicle (UAV) technology has greatly increased efficiency. UAVs can adapt to multiple terrains and do not require specific take-off platforms. They do well, especially in farmland areas with rugged terrain. However, due to the complex flow field at the bottom of a UAV, some of the droplets will not reach the surface of a plant, which causes pesticide waste and environmental pollution. Droplet deposition is a good indicator of the utilization rate of pesticides; therefore, this review describes recent studies on droplet deposition for further method improvement. First, this review introduces the flight altitude, speed, and environmental factors that affect pesticide utilization efficiency and then summarizes methods to improve pesticide utilization efficiency from three aspects: nozzles, electrostatic sprays, and variable spray systems. We also point out the possible direction of algorithm development for a UAV’s precision spray.

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Droplet deposition and spatial drift distribution characteristics of aerial spraying based on the determination of effective swath

Cited by 3 publications

References 0 publications

Development Status and Key Technologies of Plant Protection UAVs in China: A Review

Development Status and Key Technologies of Plant Protection UAVs in China: A Review

Impact of sprayer drone flight height on droplet spectrum in mountainous coffee plantation

Research on Methods Decreasing Pesticide Waste Based on Plant Protection Unmanned Aerial Vehicles: A Review

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