Management of Yellow Vein Mosaic Virus Disease of Okra through Cultural Approaches

Okra (Abelmoschus esculentus L. Moench) cultivation is threatened in the tropics due to the high incidence of okra yellow vein mosaic virus (OYVMV) disease. The experiment was conducted under field conditions to evaluate different dates of sowing and row to row spacing with a susceptible cultivar of okra 'Pusa Sawani' in a split-plot design during kharif 2018. The disease incidence and percent disease index (PDI) of OYVMV of okra were strongly impacted by the date of sowing and row to row spacing of the okra crop. Early (15th June) sown crop with closer row spacing of 30 cm had the lowest terminal disease incidence (49.30%), while late (14th July) sown crop with wider (60 cm) spaced crop had the highest (73.96%). The PDI was also lowest (47.82%) in an early (15th June) sown crop with 30 cm row spacing and greatest (68.19%) in a late (14th July) sown crop with 60 cm row spacing. During the study, it was observed that the early date of sowing with closer row to row spacing was decrease the incidence and severity of OYVMV disease.