Oxalis corniculata L. is a medicinally important plant. Its medicinal usage is reported in different traditional ystem of medicine such as Ayurveda, Unani & Sidha. It possesses important activities like antioxidant, anticancer, antimicrobial, antifungal, antihelmic, anti inflammatory, reported by Ashwin Kumar et al (2012). In Chhattisgarh, Oxalis urniculata L. popularly known as Tinpania bhaaji it is being consumed as a leafy vegetable crop by the local masses. A periodic survey was made to collect the infected leaves of O. Corniculata L. for pathological investigations. Cladosporium herbarum isolated as fungal pathogen showed large dark brown necrotics spots. The pure cultures were maintained on PDA slants for further studies. Herbs and herbal extract have been used as medicine since the beginning of human civilization. People have great faith on them for their effectiveness and their inherent medicinal properties Four Angiospermic plant extract such as Cassia fistula, Annona Squamosa, Bauhinia variegata, Aegle Marmelos were tested in vitro against. Cladosporium herbarum for the solid and broth media both. Aegle marmelos extract was found most effective in inhibiting the mycelia growth of Cladosporium herbarum where as Cassia fistula extract was least effective. The presence of antifungal compounds, in higher plants, has long been recognized as an important factor in disease resistance Mahadevan, (1982). Such compounds, being biodegradable and selective in their toxicity, are considered valuable for controlling some plant diseases (Singh and Dwivedi, 1987). Based on the findings of this study, there are great potentials in the control of fungal diseases using naturally occurring substances.
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