Evaluation of bio-efficacy of new generation insecticides, botanicals and microbial insecticides on leaf webber of amaranth
Pooru Muralikrishna, Thomas Biju Mathew, Ambily Paul and Nithya PR
Hymenia recurvalis isa major leaf eating pest on vegetable amaranth. A laboratory study was conducted on evaluation of bio-efficacy of new generation insecticides against H. recurvalis. New generation insecticides (chlorantraniliprole - 0.006%, novaluron - 0.015%, flubendiamide - 0.0096%, spinosad - 0.015%,emamectin benzoate - 0.002%, indoxacarb - 0.015%, thiacloprid - 0.036%, and fipronil - 0.01%), botanicals (NSK 5 ml L-1 and oxuron 5 ml L-1) and microbial insecticide, Bacillus thuringiensis kurstaki were evaluated in vitro. Chlorantraniliprole 0.006%, flubendiamide 0.0096%, emamectin benzoate 0.002%, indoxacarb 0.015%, thiacloprid 0.036%, fipronil 0.01% and B.t k 5 ml L-1 were found to be effective under laboratory conditions and field studies were conducted using these effective insecticides. Under field studies, flubendiamide 0.0096% was found effective in managing H. recurvalis with least toxicity to non-target organisms such as spiders.
Pooru Muralikrishna, Thomas Biju Mathew, Ambily Paul, Nithya PR. Evaluation of bio-efficacy of new generation insecticides, botanicals and microbial insecticides on leaf webber of amaranth. J Entomol Zool Stud 2019;7(5):516-520.