د.حمدي يوسف علي عثمان2026-07-212026-07-21https://dspace.academy.edu.ly/handle/123456789/2457The excessive use of broad spectrum or persistent chemicals might results in soil contamination, fungicidal resistance or other harmful effects (Maloy, 1993). Today, there are strict regulation on chemical pesticide use and there is a political pressure to remove the most hazardous chemicals from the market. Consequently, some pest management researchers have focusedTomato is the most popular vegetable in the world for of its taste, colour, high nutritive value and also for its diversified use (Bose and Soni, 1986). Soil- borne pathogens significantly reduce yield and quality of vegetable crops. Vegetable crops may be susceptible to several pathogens which may survive in soil for many years. Over 200 diseases have been reported to affect the tomato plants in the world. Among these diseases, Damping –off and root rot are the most important fungal diseases widely spread and probably occur wherever tomato plants are grown causing a considerable reduction in both yield quality and quantity (Watteroson, 1986).Biological Control of Damping