Use of Trichoderma in Biological Control of Collar Rot of Soybean and Chickpea | International Journ

At the Bangladesh Institute of Nuclear Agriculture, Mymensingh, an in vitro and field experiment was conducted for two consecutive years to investigate the efficacy of Trichoderma harzianum against Sclerotium rolfsii triggering soybean and chickpea collar rot disease. The antagonistic role of T in in vitro. Harzianum v S. Via dual culture, Rolfsii was observed. Trichoderma has been used in field studies for soil treatment and seed treatment. The inhibition percentage for S. T. induced rolfsii. Harzianum in vitro was found at up to 78.9 percent. The maximum reduction in the incidence of collar rot disease over control was 82.4% in soybeans and 77.6% in chickpeas reported in the plot where T. Harzianum was incorporated into the soil. Maximum germination of seeds: 86.3% in soybeans and 84.8% in chickpeas, maximum fresh shoot weight: 94.5 g plant-1 in soybeans, 62.5 g plant-1 in chickpeas, maximum fresh root weight: 10.7 g plant-1 in soybeans, 9.3 g plant-1 in chickpeas and maximum yield: 2830 kg ha-1 in soybeans, 1836 kg ha-1 in chickpeas were obtained by soil application of Trichoderma. The testing showed that the T isolate tested was T. Harzianum has the ability to regulate soybean and chickpea collar rot disease. Application of T to reduce the occurrence of collar rot. Harzianum in soil has been found to be more successful than treatment with seeds.

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