Efficacy of N eem products vis-a-vis Triazopbos for Management of Soybean stem borers

A field trial was conducted during kharif to find out the efficacy of neem based (neem seed water extracts (NSWE) @ 40 ml/lit and vanguard @ 5 ml/lit.) comparison with triazophos 40 EC @ 1.5 ml/lit, against the stem borer complex in soybean. Triazophos proved to be the most effective against the stem borers. Neem seed based products also superior, showed it over control. Maximum grain yield was obtained due to triazophos, applied at 30, 50 and 70 days after sowing (DAS) but the benefit/cost ratio was highest (3.03:1) in one spray of NSWE, applied at 70 DAS which was economical than the other treatments.