IPM modules for the management of leaf miner and diseases in pea crop

Abstract

Field experiments were carried out to evaluate the performance of four IPM modules against leaf miner and diseases like root rot/wilt and Ascochyta blight in Kullu valley of Himachal Pradesh during Rabi 2010-11 and 2011-12. The findings of two years experiments revealed that the IPM module (M3) consisting of seed treatment by seed soaking in streptocycline @ 200 ppm followed by seed treatment with carbendazim (Bavistin 50 WP) @ 2.5g/Kg seed succeeded by two foliar sprays with a mixture of lambda-cyhalothrin 5EC @ 0.8ml/L(0.04%) and carbendazim @ 0.1% (Bavistin 50 WP) at the 50% flowering of the crop (3.5 months of sowing, 3rd week of March) and by the 2nd spray of mixture of acetamiprid @ 0.005% (Polar 25 SP) and triademefon @ 0.05% (Bayleton 2%) after 15 days of the first spray, was found to be most effective in minimizing the leaf infestation by leaf miner and root rot/wilt incidence with 85.1% and 98.2% reduction over control, respectively. This module was also found to be the most economic resulting in highest mean marketable pod yield (138.6 q/ha) during the two years and maximum net returns of ` 21.7 per rupee spent. However, for the control of Ascochyta blight, module M1 was found to be the most effective in minimizing the disease incidence with 68.8% reduction over the control.