Efficacy and Economics of Biorationals and their Admixtures against Incidence of Major Insect Pests of Soybean

Insect pest complex is causing a serious menace on soybean production in Bundelkhand zone of Madhya Pradesh. Therefore, some biorationals and their admixtures were tested against insect pest complex of soybean during three consecutive kharif seasons. The results indicated that among fifteen treatments, the most effective treatments were cypermethrin 0.01% + DDVP 0.08% against jassid; monocrotophos 0.05% + neem oil 1% and quinalphos 0.05% + neem oil 1% against whitefly; monocrotophos 0.05% + DDVP 0.08%, quinalphos 0.05% + NLE (in cow urine) 3% and quinalphos 0.05% + NKE (in cow urine) 3% against stemfly; quinalphos 0.05% + DDVP 0.08%, neem oil 1% + DDVP 0.08%, NKE (in cow urine) 3% + quinalphos 0.05% and monocrotophos 0.05% against girdle beetle; cypermethrin 0.01% + neem oil 1% and neem oil 1% + DDVP 0.08% against defoliators and flower feeders and monocrotophos 0.05% + neem oil 1%/DDVP 0.08% and quinalphos 0.05% + DDVP 0.08%/NLE (in cow urine) 3% against pod borer. Grain yield and net profit were maximum with quinalphos 0.05% + NKE (in cow urine) 3% (1924 kg/ha; Rs 8281/ha) followed by quinalphos 0.05% + NLE (in cow urine) 3% (1912 kg/ha; Rs 8125/ha), phorate 10G @1.0 kg a.i./ ha applied as side dressing (1897 kg/ha; Rs 7930/ha), cypermethrin 0.01% + neem oil 1% (1851 kg/ha; Rs 6432/ha) and monocrotophos 0.05% + DDVP 0.08% (1847 kg/ha; Rs 6340/ha). However, ICBR was maximum with cow butter milk 4% (13.3), monocrotophos 0.05% (11.8), quinalphos 0.05% + NLE 3% (11.2) and quinalphos 0.05% + NKE 3%(11.0).