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Compatibility of 8 common pesticides with Lecanicillium lecanii JMC-01 and the toxicity of different pesticide-L. lecanii combinations toxicity to Bemisia tabaci nymphs.
- Source :
- Chinese Journal of Applied Entomology; 2020, Vol. 57 Issue 3, p682-689, 8p
- Publication Year :
- 2020
-
Abstract
- [Objectives] To determine the compatibility of eight common pesticides with Lecanicillium lecanii JMC-01, and the toxicity of combinations of each pesticide and L. lecanii JMC-01 to Bemisia tabaci nymphs. [Methods] The effects of each of eight pesticides on the spore germination and sporulation of L. lecanii, and their LC50 and co-toxicity coefficients with respect to B. tabaci nymphs, were tested using the coating and dipping methods. [Results] The growth inhibition rate, spore germination inhibition rate and sporulation inhibition rate of L. lecanii decreased with pesticide dilution factor. The bio-pesticide lspinetoram, veratrine and azadirachtin were the most compatibile and had the best synergistic effect with L. lecanii. The inhibition rates of spore germination for 10-fold dilutions of lspinetoram, veratrine and azadirachtin were 20.02%, 16.41%, and 15.38%, respectively, and sporulation inhibition rates were 17.77%, 15.90%, and 14.96%, respectively. Mycelial growth inhibition rates for the above pesticides were 9.96%, 8.87%, and 9.74%, respectively. The best synergistic control was achieved using a combination of azadirachtin and veratrine with L. lecanii. Maximum CTC was 315 and 302, respectively. [Conclusion] Selecting pesticides that are compatibile with L. lecanii, and that have a high co-toxicity coefficient at low doses, can significantly reduce the amount of pesticide required to control B. tabaci in greenhouses. [ABSTRACT FROM AUTHOR]
Details
- Language :
- Chinese
- ISSN :
- 20951353
- Volume :
- 57
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- Chinese Journal of Applied Entomology
- Publication Type :
- Academic Journal
- Accession number :
- 144431787
- Full Text :
- https://doi.org/10.7679/j.issn.2095-1353.2020.069