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Evaluation of the Wind Field and Deposition Effect of a Novel Air-Assisted Strawberry Sprayer

Author

Listed:
  • Shaoqing Xu

    (College of Science, China Agricultural University, Beijing 100193, China
    Centre for Chemicals Application Technology, China Agricultural University, Beijing 100193, China)

  • Yuru Feng

    (Centre for Chemicals Application Technology, China Agricultural University, Beijing 100193, China
    Sanya Institute of China Agricultural University, Sanya 572025, China)

  • Leng Han

    (College of Science, China Agricultural University, Beijing 100193, China
    Centre for Chemicals Application Technology, China Agricultural University, Beijing 100193, China)

  • Xiangkai Ran

    (College of Science, China Agricultural University, Beijing 100193, China
    Centre for Chemicals Application Technology, China Agricultural University, Beijing 100193, China)

  • Yuan Zhong

    (College of Science, China Agricultural University, Beijing 100193, China
    Centre for Chemicals Application Technology, China Agricultural University, Beijing 100193, China)

  • Ye Jin

    (College of Science, China Agricultural University, Beijing 100193, China
    Centre for Chemicals Application Technology, China Agricultural University, Beijing 100193, China)

  • Jianli Song

    (College of Science, China Agricultural University, Beijing 100193, China
    Centre for Chemicals Application Technology, China Agricultural University, Beijing 100193, China)

Abstract

Strawberry is a widely cultivated cash crop in China. In order to control pests and diseases on strawberries, there must be sufficient deposits on the abaxial surfaces of the leaves. Air-assisted technology can effectively increase the deposition on the abaxial surfaces of the leaves; however, most air-assisted equipment is not suitable for application due to the pattern of strawberry planting. Therefore, a novel air-assisted strawberry sprayer was developed, the static and dynamic wind fields were measured using a 3D anemometer, and the effectiveness of the application at different spray angles and wind speeds was evaluated. In addition, a comparison of the deposition effect in the strawberry canopy between the air-assisted strawberry sprayer, knapsack sprayer, and spray gun was conducted. The results showed that in the static wind field test, a difference between the center and edge wind fields was obtained, which was correlated with the distance and the outlet wind speed. In the dynamic wind field test, the wind field was found to be rolling backward during the movement, and an inward vortex was obtained. In the field, the data showed that a spray angle of 30° and a wind speed of 16 m·s −1 had the best deposition on the abaxial surface, with a coverage of 36.5% and 38.3% in the upper canopy and 6.2% and 7.9% in the lower canopy, respectively. Moreover, the air-assisted strawberry sprayer was found to have a higher deposition efficiency on abaxial surfaces than the knapsack sprayer and spray gun at a lower spray volume, the values of which in the upper and lower canopies were 42.8% and 29.7%, respectively. In conclusion, the air-assisted strawberry sprayer has the potential for the crop protection of greenhouse strawberries, and more evaluations are needed to improve the sprayer in the future.

Suggested Citation

  • Shaoqing Xu & Yuru Feng & Leng Han & Xiangkai Ran & Yuan Zhong & Ye Jin & Jianli Song, 2023. "Evaluation of the Wind Field and Deposition Effect of a Novel Air-Assisted Strawberry Sprayer," Agriculture, MDPI, vol. 13(2), pages 1-14, January.
  • Handle: RePEc:gam:jagris:v:13:y:2023:i:2:p:230-:d:1039029
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    References listed on IDEAS

    as
    1. Emanuele Cerruto & Giuseppe Manetto & Francesco Santoro & Simone Pascuzzi, 2018. "Operator Dermal Exposure to Pesticides in Tomato and Strawberry Greenhouses from Hand-Held Sprayers," Sustainability, MDPI, vol. 10(7), pages 1-21, July.
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