Research and Development of Wettable Powder of Beauveria bassiana and Its Control and Application to Frankliniella occidentalis

doi:10.16409/j.cnki.2095-039x.2020.06.017

Abstract

Abstract: In order to develop an insecticide of Beauveria bassiana against Western Flower Thrips (WFT), Frankliniella occidentalis, firstly, fungal strains with high efficiency to WFT were selected by screening, purification and rejuvenation; secondly, the liquid-solid two-phase fermentation conditions and fermentation process were optimized; thirdly, the product formulation and formula were improved; fourthly, environment and toxicity assessment of the product were evaluated. The results showed that all the indicators of the product were in line with national standards. The 15 billion conidia/g B. bassiana wettable powder was approved and registered in China in 2018. The control efficacies of spraying 1800―3000 g/ha on thrips on pepper are above 74%. The recommended dosage is 2400 g/ha. The development and registration of the product have laid a solid foundation for the biological control of WFT.

Key words: Beauveria bassiana, wettable powder, Frankliniella occidentalis

CLC Number:

S476.2

WANG Haihong, LIU Sheng, WANG Shuaiyu, LEI Zhongren. Research and Development of Wettable Powder of Beauveria bassiana and Its Control and Application to Frankliniella occidentalis[J]. Chinese Journal of Biological Control, 2020, 36(6): 858-861.

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