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Effects of Unmanned Aerial Spray System Flight Altitude and Collector Height on Spray Deposition Measured Using a Food Dye Tracer

Author

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  • Chun-Gu Lee

    (National Academy of Agricultural Science, Rural Development Administration, 166, Nongsaengmyeong-ro, Iseo-myeon, Wanju-gun, Jeonju 55365, Republic of Korea
    Depart of Biosystems Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea)

  • Seung-Hwa Yu

    (National Academy of Agricultural Science, Rural Development Administration, 166, Nongsaengmyeong-ro, Iseo-myeon, Wanju-gun, Jeonju 55365, Republic of Korea)

  • Joong-Yong Rhee

    (Depart of Biosystems Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
    Global Smart Farm Convergence Major, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
    Research Institute for Agriculture and Life Science, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea)

Abstract

The use of unmanned aerial spray systems (UASS) has increased owing to their many advantages. However, studies related to a standardized method to evaluate the spray performance of UASS are lacking. Therefore, in the present study, a quantitative analytical method using a food dye tracer was compared with the image analysis method, and the effects of experimental conditions on spray deposition were assessed. Concordance between the results of quantitative and image analyses was examined. The coverage of water-sensitive paper (WSP) and Medley Velvet (MV) was compared using image analysis. Moreover, the effects of flight altitude and collector height on spray deposition amount and effective spray width were evaluated. The results showed a significant correlation between the deposition and the coverage of MV (R 2 = 0.6782, p -level < 0.001). The coverage of MV is different from that of WSP. In addition, the correlation coefficient between the coverage of WSP and that of MV was smaller than the correlation coefficient between depositions and the coverage of MV. Therefore, MV should be used instead of WSP for more accurate analysis. The lower the collector height, the smaller the deposition amount. The effective spray width increased as the distance between the collector and UASS increased, whereas the total deposition amount decreased when the collector was close to the ground. Overall, using a food dye tracer, both quantitative and qualitative analyses can be applied simultaneously, and this method may replace analysis using WSP.

Suggested Citation

  • Chun-Gu Lee & Seung-Hwa Yu & Joong-Yong Rhee, 2022. "Effects of Unmanned Aerial Spray System Flight Altitude and Collector Height on Spray Deposition Measured Using a Food Dye Tracer," Agriculture, MDPI, vol. 13(1), pages 1-12, December.
    • Handle: RePEc:gam:jagris:v:13:y:2022:i:1:p:96-:d:1019004
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    References listed on IDEAS

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    1. Shilin Wang & Xue Li & Aijun Zeng & Jianli Song & Tao Xu & Xiaolan Lv & Xiongkui He, 2022. "Effects of Adjuvants on Spraying Characteristics and Control Efficacy in Unmanned Aerial Application," Agriculture, MDPI, vol. 12(2), pages 1-15, January.
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