Assessment of Plant Extracts and their In vitro Efficacy against Potato Early Blight Incited by Alternaria solani

Botanicals obtained from the plants are well known for suppression of inimical plant pathogens. The present study explores efficacy five locally available extracts their antifungal activity against early blight potato incited by Alternaria solani. include Datura stramonium, Allium sativum, Azadirachta indica, Eucalyptus globulus, and Lantana camara. All reduced mycelial growth conidial germination A. In vitro studies showed that sativum indica have significant inhibition solani (88.80 86.62 percent) at 20 percent concentration. Higher concentrations extract caused a higher reduction radial on dextrose agar medium. Extracts concentration, were found most effective (85.50 80.04 respectively Observations scanning electron microscope (SEM) dramatic alteration in hyphae collapsed spores shrinked when treated with per cent qualitative quantitative analysis various phytochemicals like flavonoids, alkaloids, saponins, tannins, steroids, terpenoids, glycosides, phenols was better than all other extracts. Observation also revealed concentration garlic has potential to inhibit