Bio-efficacy of different Acaricides against two spotted spider mite, Tetranychus urticae Koch infesting okra under field condition

Abstract

The field experiment was conducted at Entomology farm, Department of Entomology, BACA, AAU, Anand during summer, 2021 to determine the bio-efficacy of different acaricides against two spotted spider mite, Tetranychus urticae by using Randomized Block Design (RBD) with three replications and the results revealed that the lowest (3.00 mites/1 cm2 leaf area) population of mite were found in plots treated with spiromesifen 22.9 SC @ 0.02% and it was at par with abamectin 1.9 EC @ 0.00057% (3.19 mites/1 cm2 leaf area) and fenazaquin 10 EC @ 0.012% (3.34 mites/1 cm2 leaf area). The highest fruit yield was recorded from the plot treated with spiromesifen 22.9 SC @ 0.02% (8574 kg/ha) and it was at par with abamectin 1.9 EC @ 0.00057% (8558 kg/ha) and fenazaquin 10 EC @ 0.012% (8541 kg/ha) as compared to the rest of treatments.