Effect of different treatments of fungicides and bioagents on collar rot disease of soybean and its grain yield.

Soybean is the important source of vegetable oil and proteins and cultivated on a large scale in all over the world. Several yield losses were reported which reduces quality and quantity of seed yield in soybean. Collar rot caused by Sclerotium rolfsii is one of the most important disease of soybean and as the pathogen is soil-borne, it is difficult to control with fungicidal and bioagents application. Therefore, the present study was undertaken with 14 treatments of fungicides, bioagents, alone and in combination as seed treatment and soil application in randomized block design replicated thrice to know the effect of these treatments on germination, mortality and grain yield of soybean. The present studies revealed that, seed treatment with carbendazim + Trichoderma viride recorded significantly maximum seed germination (94.44%). Seed treatment with carbendazim + thiram reported minimum per cent mortality (3.33%) with highest per cent disease control (72.43%) while highest grain yield (1808 kg ha-1) was observed with the soil application of Trichoderma viride + Trichoderma harzianum.