Influence of Several New Pesticides on Sugarcane Yield and Quality and Their Control Efficacy for Sugarcane Borer

[Objective] Control efficacy of 3 pesticides( 20% Chlorantraniliprole SC,30% Chlorantraniliprole Thiamethoxam SC,and 20%Avermectin) for sugarcane borer was explored to figure out suitable chemicals for controlling sugarcane borer in sugarcane producing regions of Guangxi,and provide references for field production. [Method]Spray 20% Chlorantraniliprole( 150 ml/hm2),30% Chlorantraniliprole Thiamethoxam( 150 ml/hm2),and 20% Avermectin( 1 500 ml/hm2) for field test,and clean water as the control group. [Result]After applying the 3 pesticides,control efficiency for dead heart seedling 23 days later is 41. 43%- 48. 57%,control efficiency for borer-damaged node,borerdamaged plant,and dead end plant is 21. 49%- 24. 47%,7. 48%- 9. 14%,8. 72%- 11. 05% 183 days later; the harvest effective stems increase by 6. 19%- 8. 18% from the control group,sucrose increases by 0. 68%- 1. 00%. Influence of the 3 pesticides on growth of sugarcane shows no obvious difference. [Conclusion]The 3 pesticides show high efficiency in controlling sugarcane borer,especially dead heart seedlings;and the efficiency shows no obvious difference,so all of them can be applied as the new chemical for controlling sugarcane borer.