Synergistic Effects of Pesticide Adjuvant Beichuang on Phoxim Against Bradysia odoriphagaYang et Zhang

Taking 3-year-old larvae of Bradysia odoriphagaas research object,the toxicity determination of the mixture that less Phoxim than conventional dosage mixed with pesticide adjuvant(Liangfenbao and Jianweikang)in controlling Bradysia odoriphagaYang et Zhang was determined by stomach-contact combination toxicity method in the laboratory.The results showed that the LC50 values of the mixture(containing 14%of Liangfeibao or Jianweikang and 30%-40%less Phoxim than conventional dosage)in against three-year-old carvae of Bradysia odoriphagaYang et Zhang were 1.74-2.01mg/L,1.96-2.28mg/L,respectively.The toxicity was corresponded to the conventional dosage of Phoxim(1.84mg/L).