ABSTRACT

Tomato is one of the most important “protective food” because of its special nutritive value and its wide production. Most tomato cultivars are susceptible to this disease and depending upon age of the plant, season, and environmental factors at the time of infection, and yield losses range between 50% and 86%. The use of plant extracts has been shown to be ecofriendly and effective against many plant pathogens. A number of plant species have been reported to possess natural substances that are effective against several plant pathogenic fungi. The causal fungus was isolated from naturally infected tomato leaves and fruits showing blight symptoms. Disease severity was recorded 2 weeks after inoculation. The filtrate of each plant extract was mixed with autoclaved potato dextrose agar (PDA) medium at 10% and 20% concentration. Plant extract treatments at 20% concentrations were applied as foliar application on 7-weeks-old tomato plants and every 15 days up to 60 days.