Evaluation of Plant Extracts against Fusarium Oxysporum F. Sp. Lycopersici, Wilt Pathogen of Tomato
نویسندگان
چکیده
Wilt is an important disease of tomato crop causing significant reduction in yield. In present study, the pathogenic fungus was isolated from infected plant and identified based on morphological and cultural characters as Fusarium oxysporum f.sp.lycopersici whose pathogenicity was confirmed by Koch’s postulate on tomato seedling. In vitro evaluation of extracts of 20 plant species was done by poisoned food technique for evaluating their fungitoxicity against the test pathogen. The extract of Ageratum conyzoides exhibited maximum toxicity (95.57%) against the Fusarium oxysporum f.sp. lycopersici. Significant results were also observed in extracts of Ageratum haustonianum, Clerodendrum inermae and Terminalia bellirica showing inhibition of 90.33%, 84.97% and 79.19% respectively. Application of plant extracts which are easily available for controlling plant diseases are non pollutive cost effective non hazardous and do not disturb ecological balance.
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