Control Effects of Three Protective Agents on Tobacco Beetle and Tobacco Moth

Abstract

The control experiments of 2.5% deltamethrin(A),mixed agent(B,main active ingredient:pyrethroid),Resigen(C)against tobacco beetle and tobacco moth were carried out in Xiamen and Kunming Cigarette Factories,respectively.The results showed that:1)both agents A and B had better control effects by spraying with super low volume into the atmosphere in storehouse;at the dosages of 4.0 mg/m3 and 3.5 mg/m3,respectively,the relative control effect and killing rate against adult tobacco beetle were all above 97%;2)when spraying in conventional way onto the wall and floor in storehouse,the killing rates of A at the dosage of 10.0 mg/m2 and B at the dosage of 8.0 mg/m2 against adult tobacco beetle reached 100% in 24 hours;while the killing rate of C at the dosage of 80.0 mg/m2 was only 80.8% in 48 hours;3)the air borne relative control effects of A at the dosage of 5.0 mg/m3 and B at 4.0 mg/m3 against tobacco moth were above 90%,while that of C at 12.0 mg/m3 was 82.1%.