Bio-efficacy and dose standardization of Proclaim Fit 45 WG against Meridarchis scyrodes in ber and toxicity to natural enemies

Abstract

We evaluated the bio-efficacy and dose standardization of Proclaim Fit 45 WG against Meridarchis scyrodes Meyrick in ber, Ziziphus mauritiana under field conditions. The treatment Emamectin benzoate 5% + Lufenuron 40% WG @ 31.5g and Emamectin benzoate 5% + Lufenuron 40% WG @ 27g a.i. ha-1 proved most effective in term of per cent reduction of fruit infestation with 82.86 and 86.62 % reduction in fruit infestation with higher yield during 2017-18 and 2018-19, respectively. The treatment chlorpyrifos 20% EC @ 600g a.i. ha-1 found to be a least effective by giving 63.95 and 68.40 % reduction in fruit infestation during the 2017-18 and 2018-19, respectively. All the three doses of Emamectin benzoate 5% + Lufenuron 40% WG and other treatments found to be safe to the natural enemies viz., spider and coccinellids.