The observational study of the indoor molluscicidal efficacy of 10 molluscicidal drugs

Objective To screen new molluscicides with high efficiency,low toxicity and easy usage for the fields.Methods Ten kinds of herbicides were brought into the study,and the methods of soak,spray and dust were employed,while the contrast was fresh water.Results For the method of soak and concentrations of 0.5,1.0,2.0,4.0,8.0,16.0 and 32.0mg/L,the 24h,48h and 72h molluscicidal rates of code A-004,B-008 and B-009 were 6.7%-56.7%,23.3%-86.7% and 30.0%-100.0%;6.7%-80.0%,10.0%-96.7% and 26.7%-100.0%.10.0%-66.7%,16.7%-100.0% and 23.3%-100.0% respectively; for the method of spray and doses of 0.5,1.0,2.0,4.0,8.0,16.0 and 32.0g/m2,3d,7d and 15d molluscicidal rates of code B-009 are 3.3%-90.0%,13.3%-96.7% and 20.0%-100.0% respectively,for the method of dust,the 3d,7d and 15d molluscicidal rates of code A-001 and A-002 were 6.7%-96.7%,10.0%-100.0% and 16.7%-100.0%;6.7%-93.3%,6.7%-100.0% and 20.0%-100.0%,respectively.Conclusion All the ten kinds of herbicides had more or less molluscicidal efficacy.Code A-001 and A-002 deserve further research because of their effective molluscicidal efficacy in the method of dust.