Field Trial on Control of Rice Planthopper by 5% Thiamethoxam Concentrate Emulsion

The rice planthopper was treated with 5% Thiamethoxam Concentrate Emulsion in the field,and the results showed this agricultural chemical when applied to control rice planthopper at the effective composition content of 15g/hm,11.25g/hm,7.5g/hm all had a highly control efficiency than the control pesticides 25% Thiamethoxam water dispersible granule of 7.5g/hm,the control effects were as high as 90.34%,95.03%,92.43% at The first,third and seventh days after spraying,no damages to the treated litchi trees were found caused.