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Chinese Journal of Applied Ecology ›› 2020, Vol. 31 ›› Issue (7): 2415-2421.doi: 10.13287/j.1001-9332.202007.027

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Control effects of different herbicides on weeds as well as their effects on growth and deve-lopment of broomcorn millet

ZHAO Ying-nan1, ZI Xue-jing1,2, WANG Wan1, FENG Yu1, YANG Pu1, GAO Jin-feng1, WANG Peng-ke1, GAO Xiao-li1*   

  1. 1College of Agronomy, Northwest A&F University/State Key Laboratory of Crop Stress Biology for Arid Areas, Yangling 712100, Shaanxi, China;
    2Yunnan Agricultural University, Kunming 650000, China
  • Received:2019-11-29 Accepted:2020-04-03 Online:2020-07-15 Published:2021-01-15
  • Contact: E-mail: gao2123@nwsuaf.edu.cn
  • Supported by:
    This work was supported by the National Millet Crops Research and Development System (CARS-06-13.5-A26) and the Key Research and Development Program of Shaanxi Pro-vince (2018TSCXL-NY-03-01).

Abstract: Selecting a herbicide suitable for broomcorn millet is a key issue in high efficiency and safe production of broomcorn millet and ecological environment improvement. We compared the control effects of 22 different herbicides on weeds as wells as their effects on growth and development of glutinous millet (Yumi 2) in the field. The results showed that, 1) soil applied Goyou, Butachlor, atrazine, and Benzipram, and stem- and leaf-applied WP mixture of tribenuron-methyl·carfentrazone-ethyl·MCPA-Na, Sigma Broad, Tengjing, Taoshi·Youxian and Kuofei had little phytotoxi-city, with broomcorn millet seedlings growing normally, and the other herbicides had phytotoxicities on broomcorn millet. 2) All the herbicides controlled weeds in the field to some extent, with better performance of soil applied herbicides than the stem- and leaf-applied ones, and affected plant height, functional leaf SPAD and spike weight per plant of broomcorn millet. 3) Compared with manual weeding, all herbicides reduced yields of glutinous millet. Compared with no herbicides application, some herbicides had yield-increasing effects. Among the soil applied herbicides, Go-you, Butachlor, atrazine, and Benzipram performed better in weeding control, increasing the yield of broomcorn millet by more than 60% compared with no herbicide control. Among the stem- and leaf-applied herbicides, Sigma Broad and WP mixture of tribenuron-methyl·carfentrazone-ethyl·MCPA-Na performed better in weeding control, increasing the yield of glutinous millet by more than 50% compared with no herbicide control. Therefore, applying 38% atrazine or 44% Monosulfuron to soil before the emergence of broomcorn millet, or stem- and leaf-applied 3.6% mesosulfuron-methyl or 55% WP mixture of tribenuron-methyl·carfentrazone-ethyl·MCPA-Na after the emergence of broomcorn millet, performed better in weeding control and with limited effects on the growth and development of broomcorn millet.

Key words: broomcorn millet, herbicide, weeding control effect, growth and development