Vol. 8, Issue 1, Part A (2022)

Abstract
The disease appears in the field in patches at both seedling and adult stages. Seedling wilt is characterized by sudden drooping, followed by drying of leaves and seedling death. The roots appear healthy, with reduced proliferation and nodulation and usually no internal discoloration of the vascular system. Significant highest radial mycelium growth rate was observed in T. viride (90%) and followed by T. harzianum-4 (89%), T. harzianum-5 (87%). The mycelial growth of T. harzianum-5 and Sclerotium rolfsii in dual culture were 66.2 mm and 24.2 mm followed by T. viride 65.1mm and 26.3 mm respectively after 168 hrs of incubation. The mycelial growth of T. viride and Fusarium oxysporum f. sp. lentis in dual culture were 75.3 mm and 15.7 mm followed by T. harzianum-5 70.1 mm and 20.6 mm respectively after 168 hrs of incubation. Significant higher germination per cent of lentil seed was recorded in T. viride (74.5%) followed by T. harzianum-5 (72.5%) as compared to control (56.5%) in field condition. Trichoderma strains significantly reduced collar rot incidence was recorded in T. viride (13%) followed by T. harzianum-5 (14.25%) as compared to control (32.5%). Trichoderma strains significantly reduced wilt incidence was recorded in T. viride (14.25%) followed by T. harzianum-5 (15.30%) as compared to control (35.25%).