Comparison of Effect of Five Chemicals on Controlling of Holotrichia obeita in Peanut Field

The experiment was carried out to compare effect of five chemicals on controlling Holotrichia obeita in peanut field.Results showed that number of Holotrichia obeita in peanut field decreased by 91.40% and 82.51% 20 days of application of 48% Chlorpyrifos and 40% Bibensheng.The disease control effect was 95.66% and 87.11% and the yield of peanut increased by 45.09% and 33.72%.Effects were better than that of 40% Phoxim EC and 40% Isofenphos-methy.But effect of application of 10% Imidacloprid was the same as that of application of 48% Chlorpyrifos and 40% Benbisheng.