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Study of Mechanical-Chemical Synergistic Weeding on Characterization of Weed–Soil Complex and Weed Control Efficacy

Author

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  • Huimin Fang

    (Key Laboratory of Modern Agricultural Equipment, Ministry of Agriculture and Rural Affairs, Nanjing 210014, China
    Nanjing Institute of Agricultural Mechanization, Ministry of Agriculture and Rural Affairs, Nanjing 210014, China
    School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China)

  • Gaowei Xu

    (Department of Automotive Engineering, Shandong Jiaotong University, Jinan 250357, China)

  • Xinyu Xue

    (Key Laboratory of Modern Agricultural Equipment, Ministry of Agriculture and Rural Affairs, Nanjing 210014, China
    Nanjing Institute of Agricultural Mechanization, Ministry of Agriculture and Rural Affairs, Nanjing 210014, China)

  • Mengmeng Niu

    (Shandong Academy of Agricultural Machinery Sciences, Jinan 250100, China)

  • Lu Qiao

    (Key Laboratory of Modern Agricultural Equipment, Ministry of Agriculture and Rural Affairs, Nanjing 210014, China
    Nanjing Institute of Agricultural Mechanization, Ministry of Agriculture and Rural Affairs, Nanjing 210014, China)

Abstract

Mechanical-chemical synergy has been proven efficient in weed control. However, characterizing the state of the weed–soil complex after mechanical weeding and revealing its effects on subsequent herbicide application is still challenging, which restricts the implementation of this technology. This paper first presents a method to characterize the state of the weed–soil complex from the perspectives of the fragmentation and composite characteristics. The regrowth of the weed–soil complex and the effects of complemented herbicide-reduced spraying on weed control efficacy and crop yield were then investigated. The results showed that the typical diameters of the weed–soil complexes were 10.67 cm and 2.82 cm after inter-row hoe shovel and intra-row finger weeding, respectively. There were mainly two and four weed–soil complex states after inter-row and intra-row weeding, respectively. The regrowth rate corresponding to the weed–soil complex state with the largest component proportion after inter-row and intra-row weeding was 76.91% and 18.37%, respectively. The additional chemical herbicide sprayed on the weed–soil complex significantly improved the fresh weight control efficacy of 95.12% for the preposed inter-row mechanical weeding and 138.07% for the preposed intra-row mechanical weeding in the maize silking stage. The maize yield of inter-row mechanical–75% chemical application treatment was 9.27% higher than that of chemical treatment. Mechanical weeding creates a suitable weed–soil complex state for subsequent chemical application and improves the synergistic weeding effect.

Suggested Citation

  • Huimin Fang & Gaowei Xu & Xinyu Xue & Mengmeng Niu & Lu Qiao, 2022. "Study of Mechanical-Chemical Synergistic Weeding on Characterization of Weed–Soil Complex and Weed Control Efficacy," Sustainability, MDPI, vol. 15(1), pages 1-13, December.
    • Handle: RePEc:gam:jsusta:v:15:y:2022:i:1:p:665-:d:1020511
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    References listed on IDEAS

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    1. Chung-Liang Chang & Bo-Xuan Xie & Sheng-Cheng Chung, 2021. "Mechanical Control with a Deep Learning Method for Precise Weeding on a Farm," Agriculture, MDPI, vol. 11(11), pages 1-21, October.
    2. Tomas Rivas-Garcia & Alejandro Espinosa-Calderón & Benjamin Hernández-Vázquez & Rita Schwentesius-Rindermann, 2022. "Overview of Environmental and Health Effects Related to Glyphosate Usage," Sustainability, MDPI, vol. 14(11), pages 1-14, June.
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