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Evaluation of Spray Drift of Plant Protection Drone Nozzles Based on Wind Tunnel Test

Author

Listed:
  • Guobin Wang

    (College of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255022, China)

  • Tongsheng Zhang

    (College of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255022, China)

  • Cancan Song

    (College of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255022, China)

  • Xiaoqing Yu

    (Plant Protection Station of Shandong Province, Jinan 250100, China)

  • Changfeng Shan

    (College of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255022, China)

  • Haozheng Gu

    (College of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255022, China)

  • Yubin Lan

    (College of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255022, China
    National Center for International Collaboration Research on Precision Agricultural Aviation Pesticides Spraying Technology (NPAAC), Ministry of Science and Technology, College of Electronics Engineering, South China Agricultural University, Guangzhou 510642, China
    Department of Biological and Agricultural Engineering, Texas A&M University, College Station, TX 77845, USA)

Abstract

The use of drones in agriculture is expanding at a brisk pace in crop production due to the superiority in precision, efficiency, and safety of their applicators. However, their potential drift risk also raises concern for users and regulatory authorities. The method of wind tunnel research can effectively evaluate the weighted influence of each drift factor, especially the drift characteristics of the nozzle and spray solution. Based on the wind tunnel test results, centrifugal nozzles have a higher drift risk than hydraulic nozzles, even with a similar DV 50 . The cumulative drift rate of the centrifugal nozzle at 2 m downwind was 90.1% compared to the LU12001 nozzle’s 40.6% under the wind speed of 3.5 m/s. Compared with the same coding as the flat fan hydraulic nozzle, the IDK nozzle can effectively reduce the drift rate. For the tested nozzles, DV 50 and wind speed had a linear relationship with drift rate, and the sampling location had an exponential or logarithmic relationship with drift rate. Spray adjuvants, especially modified vegetable oils, had a significant effect on reducing the amount of drift. The results of this experiment provide a reference for the selection of nozzles and the addition of spray adjuvants. Further clarifying the spray drift characteristics of drones until a drift prediction model is available is still the focus of research.

Suggested Citation

  • Guobin Wang & Tongsheng Zhang & Cancan Song & Xiaoqing Yu & Changfeng Shan & Haozheng Gu & Yubin Lan, 2023. "Evaluation of Spray Drift of Plant Protection Drone Nozzles Based on Wind Tunnel Test," Agriculture, MDPI, vol. 13(3), pages 1-13, March.
    • Handle: RePEc:gam:jagris:v:13:y:2023:i:3:p:628-:d:1089446
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    Cited by:

    1. Zongru Liu & Jiyu Li, 2023. "Application of Unmanned Aerial Vehicles in Precision Agriculture," Agriculture, MDPI, vol. 13(7), pages 1-4, July.

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