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Better Droplet Deposition and Internode Shortening Effects of Plant Growth Regulator EDAH on Maize Applied by Small Unmanned Aerial Vehicle Than Electric Knapsack Sprayer

Author

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  • Zhao Wang

    (Engineering Research Centre of Plant Growth Regulators, Ministry of Education, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China)

  • Mujahid Hussain

    (Engineering Research Centre of Plant Growth Regulators, Ministry of Education, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China)

  • Guanmin Huang

    (Engineering Research Centre of Plant Growth Regulators, Ministry of Education, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China)

  • Jiaming Yin

    (Engineering Research Centre of Plant Growth Regulators, Ministry of Education, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China)

  • Yuling Guo

    (Engineering Research Centre of Plant Growth Regulators, Ministry of Education, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China)

  • You Mo

    (Engineering Research Centre of Plant Growth Regulators, Ministry of Education, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China)

  • Liusheng Duan

    (Engineering Research Centre of Plant Growth Regulators, Ministry of Education, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China)

  • Zhaohu Li

    (Engineering Research Centre of Plant Growth Regulators, Ministry of Education, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China)

  • Weiming Tan

    (Engineering Research Centre of Plant Growth Regulators, Ministry of Education, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China)

Abstract

Maize ( Zea mays L.) lodging is an important factor limiting its yield increase worldwide. EDAH (containing 27% ethephon and 3% DA-6) is commonly used to decrease lodging. There is an urgent need to select efficient application methods of agrochemical for better spray deposition. In our research, an unmanned aerial vehicle (UAV) (15 L ha −1 and 30 L ha −1 ) with EDAH dosages of 72 and 90 g a.i. ha −1 , and electric knapsack sprayers (EKS) (450 L ha −1 ) with dosages of 90 g a.i. ha −1 were used to compare the droplet deposition distribution, uniformity and maize growth. According to our research, EDAH applied by UAV had a higher droplet deposition rate than EKS; EKS had a higher droplet coverage rate, deposition density, droplet distribution uniformity. At the same dosage of EDAH, the UAV had a better effect on controlling maize growth than EKS, and almost equal effects were detected when the dosage applied by the UAVs was decreased by 20%. Considering the lodging occurrence and yield, we recommend that the dosage of EDAH applied by UAVs should be 72 g a.i. ha −1 when there is weak lodging and 90 g a.i. ha −1 when there is heavy lodging, with a spray volume of 15 L ha −1 .

Suggested Citation

  • Zhao Wang & Mujahid Hussain & Guanmin Huang & Jiaming Yin & Yuling Guo & You Mo & Liusheng Duan & Zhaohu Li & Weiming Tan, 2022. "Better Droplet Deposition and Internode Shortening Effects of Plant Growth Regulator EDAH on Maize Applied by Small Unmanned Aerial Vehicle Than Electric Knapsack Sprayer," Agriculture, MDPI, vol. 12(3), pages 1-17, March.
    • Handle: RePEc:gam:jagris:v:12:y:2022:i:3:p:404-:d:770891
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    References listed on IDEAS

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    1. Haitao Jia & Manfei Li & Weiya Li & Lei Liu & Yinan Jian & Zhixing Yang & Xiaomeng Shen & Qiang Ning & Yanfang Du & Ran Zhao & David Jackson & Xiaohong Yang & Zuxin Zhang, 2020. "A serine/threonine protein kinase encoding gene KERNEL NUMBER PER ROW6 regulates maize grain yield," Nature Communications, Nature, vol. 11(1), pages 1-11, December.
    2. Rui Jia & Qian Lu, 2020. "Land transfer, collective action and the adoption of soil and water conservation measures in the Loess Plateau of China," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 102(3), pages 1279-1304, July.
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