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Spatio-temporal Pattern of Okra Yellow Vein Mosaic Virus and its Vector in Relation to Epidemiological Factors

Asad Chaudhary, Khan MA and Kashif Riaz

Spatio-temporal pattern of Okra yellow vein mosaic virus as well as its vector whitefly was investigated in relation to epidemiological factors (Maximum and minimum air temperature, relative humidity, rainfall and wind speed) was determined on commercially grown okra varieties i.e. Sabaz pari, Pahuja, Lush green and Pusa sawani. Data recorded on whitefly population and Okra yellow vein mosaic virus disease incidence was graphically plotted to visualize spatio-temporal pattern. Four okra varieties Sabz pari, Pahuja, Pusa sawani and Lush green was sown under RCBD design. Data obtained from vector population and disease incidence was analyzed through ANOVA and three-dimensional graphs to demonstrate spatial and temporal pattern of OYVMV and B. tabaci population in relation to environmental factors. Among four varieties/lines Pusa sawani showed significant correlation with the environmental factors.