author(s)
N Abhijith, S Mohan and S Jeyarajan Nelson

abstract
The toxicity of Sweet flag (Acorus calamus) 6 EC (Hexane extract) formulation was tested against three insect pests of stored products viz., C. ferrugineus, L. serricorne and T. castaneum in Post graduate research laboratory, Coimbatore during 2016. The SF 6 EC formulation was effective against C. ferrugineus and L. serricorne with 50 (45.19) and 66.67 (54.75) percent mortality at only 1 percent and 6 percent concentration after 36 and 60 Hours After Treatment (HAT) respectively. The cent percent mortality was observed at 3 percent and 8 percent concentration in C. ferrugineus and L. serricorne respectively. The concentration of 2 and 3 percent SF 6 EC was effective against C. ferrugineus whereas against L. serricorne it was 6 percent in Filter Paper Impregnation Method (FPIM). As chemical insecticides are causing many S the botanical extracts in stored pest management can be selected as surface treatment to avoid cross infestation of the stored products during storage.