10.22376/ijpbs.2019.10.1.p1-12 Volume 4 Issue 2 2013 (April - June) Chilli is one of the important spices and cultivated around the world for its peculiar hot taste. Chilli crops prone to affect by seedling disease called damping off. In order to overcome this problem, efforts have been made to evaluate the efficiency of the biocontrol agent lessThan i greaterThan Trichoderma harizanum lessThan /i greaterThan for controlling the damping off disease in chilli. lessThan i greaterThan T. harizanum lessThan /i greaterThan was isolated from the garden soil and identified through microscopic and recommended standard methods. The antagonistic activity of the lessThan i greaterThan T. harizanum lessThan /i greaterThan was evaluated against the pathogenic fungi responsible for damping disease lessThan i greaterThan i.e., Fusarium oxysporium, Rhizoctonia solani lessThan /i greaterThan and lessThan i greaterThan Alternaria alternata lessThan /i greaterThan proved the efficiency to lessThan b greaterThan lessThan /b greaterThan inhibit the growth of all the above pathogens. The lessThan i greaterThan T. harizanum lessThan /i greaterThan was formulated with talcum powder and applied as foliar spray on damping off diseased chilli plants. After 49 days of treatment, lessThan i greaterThan T. harizanum lessThan /i greaterThan treated chilli plants showed more plant height (75 %), number of leaves (60 %), buds (10 %) and fruits (6 %) than control. Hence we concluded that, lessThan i greaterThan T. harizanum lessThan /i greaterThan can be recommended not only for the control of damping off disease in chilli plants and also to enhance the growth of the plants. SUBASH, N., MEENAKSHISUNDARAM, M.,UNNAMALAI, N AND SASIKUMAR, C Trichodema harizanum, bio control, damping off, chilli seedlings 1076-1082