Field experiments were carried out at Zonal Agricultural and Horticultural Research Station, Navile, Keladi Shivappa Nayaka University of Agricultural and Horticultural Sciences, Shivamogga, Karnataka India during kharif 2020 and 2021. A total of seven acaricides were evaluated, and the results revealed that spiromesifen 22.9SC @ 0.8 ml/ l was the most effective in reducing mites (87.21% reduction) followed by diafenthiuron 50WP @ 1.0 gm/ l (84.49%). Maximum marketable pod yield was obtained with spiromesifen 22.9SC (21.36 t/ ha) and it was closely followed by diafenthiuron 50WP (20.15 t/ha). Maximum cost benefit ratio was observed with these, and thus spiromesifen 22.9SC @ 0.8 ml/ l and diafenthiuron 50WP @ 1.0 g/ l can be recommended against mites in yard long bean.

This study on the comparative biology Pectinophora gossypiella (Saunders) was carried out at the University of Agricultural Sciences, Raichur, Karnataka, in insect rearing growth chamber (25 ± 1°C, 65 ± 5% RH and photoperiod of 14:10 hr, L: D) during 2018-19. The results revealed that the incubation period was 3.5 ± 0.82 and 3.05 ± 0.55 days in non-diapausing and diapausing populations, respectively; a total larval period of 18.60 ± 2.28 and 19.65 ± 1.53 days, respectively was observed without any significant difference; and adult longevity of male and female was 9.05 ± 0.55 and 9.55 ± 0.83 days, respectively in non-diapausing population, while in diapausimg population it was 9.75 ± 0.26 and 10.25 ± 0.43 days. Total life cycle of non-diapausing population was significantly shorter (42.85 ± 4.99 days) as compared to diapausing one (134.3 ± 12.91 days) with fecundity of 112.34 ± 10.31 and 104.54 ± 9.96 eggs, respectively. The longer lifecycle of diapausing population was due to long resting diapausing period ranging from 72 to 108 days.