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Journal of Agriculture ›› 2023, Vol. 13 ›› Issue (11): 29-34.doi: 10.11923/j.issn.2095-4050.cjas2022-0175

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Research on Green Prevention and Control Technology of Tobacco Root-Knot Nematode Disease

GUO Shanhu1(), ZHANG Jintao1, ZHANG Zhihong2(), XIAO Yongfei2, DENG Zhixiong1, HE Zhiming1, XU Sai1, ZHU Yongli2, XIANG Rongrong2   

  1. 1 China Tobacco Hunan Industrial Co. Ltd., Changsha 410014, Hunan, China
    2 Yunnan Microbial Fermentation Engineering Research Center Co., Ltd., Kunming 650217, Yunnan, China
  • Received:2022-12-13 Revised:2023-03-31 Online:2023-11-20 Published:2023-11-15

Abstract:

To explore the technology of green control of tobacco root knot nematode, in areas where root-knot nematode disease is frequent, chemical pesticides, biological pesticides and functional microbial agents are used to carry out comprehensive control research on tobacco root-knot nematode disease. After comparative analysis, the prevention and control measures with obvious disease prevention effect were screened. The rational application of bio-organic fertilizer, chemical pesticide, biopesticide and biofungicide can promote the growth of tobacco plants, improve the economic characteristics of tobacco and improve the quality of tobacco leaves. Different treatments had a certain effect on the control of root-knot nematodes, and the prevention and control effect of “Bio-organic fertilizer+Thiazolphosphine content 10%+Biocontrol agent No. 6” was the best, and the prevention and control effect was 96.96%. The prevention and control effects of the two modes of “Bio-organic fertilizer+Purpureocillium lilacinum+Biocontrol agent No. 6” and “Bio-organic fertilizer+Thiazolphosphine content 10%” were similar, which were 85.43% and 84.11% respectively. Compared with other three treatments, the prevention and control effect of “Bio-organic fertilizer+Purpureocillium lilacinum” was poor,which was only 72.85%. The fertilization mode of “Bio-organic fertilizer+Thiazolphosphine content 10%+Biocontrol agent No. 6” can effectively improve the quality of tobacco leaves, and has the best effect on the prevention and control of tobacco root knot nematode disease.

Key words: tobacco, root-knot nematodes, green prevention and control, bio-organic fertilizer, biocontrol agents, Verticillium chlamydosporium