Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2019, Vol. 35 ›› Issue (8): 82-85.doi: 10.11924/j.issn.1000-6850.casb18100071

Special Issue: 烟草种植与生产

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Control Effect of Four Biological Agents on Tobacco Root-knot Nematodes

  

  • Received:2018-10-20 Revised:2018-11-07 Accepted:2018-11-16 Online:2019-03-15 Published:2019-03-15

Abstract: Root-knot nematode has become the major threat to tobacco in Panzhihua, and caused serious yield loss. To screen biological agent with high efficiency and safety, a field experiment was conducted to determine the effect of four biological agents against tobacco root-knot nematode in Ganbazi, Renhe during 2017-2018. The efficacy was evaluated comprehensively through control efficacy, the correction control efficacy of the decline rate of the second- stage juveniles and the yield- increasing efficiency. The results showed that ‘Yongwei?168’agent gained the highest comprehensive performance with the control efficacy of 62.11%, the correction control efficacy of the decline rate of the second-stage juveniles of 81.05% and the yield increase effect of 53.08% 120 days after the treatment. Therefore,‘Yongwei?168’agent has a good application prospect on controlling tobacco root-knot nematodes.

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