In-vitro Evaluation of the Efficacy of Two Plant Extracts Allium sativum (Garlic) and Azadirachta indica (Neem) in the Control of Powdery Mildew Caused by Golovinomyces cichoracearum of Abelmoschus esculentus (Okra)

Aim: The aim of this study is to determine the efficacy extracts some selected plant materials in control Powdery Mildew Okra plant.
 Study Design: Completely randomized design.
 Place Study: This was carried out Biology Laboratory Department Plant Science and Biotechnology.
 Methodology: Three farms showing symptoms powdery mildew disease were surveyed, occurrence recorded, incidence calculated. Leaves okra (Abelmoschus esculentus) collected from farms. recorded samples infected leaves taken laboratory for microscopic examination. fungus associated with isolated cultured obtain a pure culture. Pathogenicity test on healthy plant. Extraction two plants done using methanol it then diluted different concentrations. antifungal susceptibility Golovinomyces cichoracearum agar diffusion method at various concentrations 50 mg/ml, 25 12.5 6.25 mg/ml under in-vitro conditions. minimum inhibitory activity these concentrations.
 Results: Results phytochemical analysis showed that Alkaloids, reducing sugars, carbohydrates, Flavanoids, Tannins Resins present both Allium sativum (garlic) Azadirachta indica (neem). These phytochemicals are suspected be responsible plants. Out plants, neem leaf extract found best inhibition significantly high 26.77±0.50 after treatment. At P<= 0.05 there significant difference A. cichoracearum.
 Conclusion: indic (neem) possess properties, may have potential production biopesticides, can used fungi.