Vegetos- An International Journal of Plant Research

Species of Trichoderma are being widely used in agriculture as biological agent of plant disease control and biofertilizer for boosting plant growth. In our study, thirty isolates of Trichoderma (T. harzianum and T. virens) obtained from rhizospheric soil samples of different plants and locations of Uttarakhand were evaluated for enhancement of seed germination of paddy, tomato and mustard and their plant growth promotion activity. Maximum seeds germination was recorded with isolates PB 3, 6, 7, 15, 18, 23 & 28 (96.7%) for paddy, PB 23 & 28 (100%) for tomato and PB 28 (100%) for mustard seeds treated with Trichoderma respectively as compare to control in towel paper test. Maximum root length was recorded with isolate PB 15 (80.3%), PB 6 & 30 (60%) and PB 2 & 4 (59.7%) in rice, tomato and mustard respectively. Maximum shoot length was achieved with Isolate PB 8 (38.5%) in rice whereas PB16 promoted maximum shoot growth in both tomato and mustard by 32.1% and 28.7%.