Antifungal efficacy of plant extracts, biocontrol agents against Colletotrichum capsici causing anthracnose of chilli

The present investigation was conducted during 2015-2017 to evaluate the effectiveness of extracts of Bavchi seeds (Psoralea corylifolia), Datura leaves (Datura sp.) and Ghaneri leaves (Lantana camera), biocontrol agents against Colletotrichum capsici. Among the Pseudomonas fluorescens and Trichoderma viride tested by dual culture technique. Trichoderma viride suppressed the growth of Colletotrichum capsici by 80.00%. The three botanicals viz., Psoralea corylifolia, Datura sp. and Lantana camera at different concentrations 250μl, 500μl, 750μl and 1000μl were tested by poisoned food technique. Methanolic extract of Psoralea corylifolia @ 1000μl showed the highest inhibition against Colletotrichum capsici. Treatment with P. fluorescens (culture filtrate @ 0.5%) + T. viride (culture filtrate @ 0.5%) + methanolic extract of Psoralea corylifolia @ 2% proved highly effective in reducing disease intensity (80%) in chilli under detached fruit bioassay.

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