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An Overview of Apple Scab, its Cause and Management Strategies
Apple scab is the most important disease of apple (Malus × domestica) throughout the temperate regions of world. This disease results in 70% yield loss and even complete loss is also possible, if it is not managed in orchards properly. The infection begins in spring when ascospores are released and infect young emerging apple leaves. Conidia are then produced from these infections and continue the cycle of secondary infection in leaves and fruits. Different management strategies like cultural, biological, resistance and chemical approach has been adopted for its control. However, development of scab resistant apple cultivars carrying the Vf resistance gene could be a step toward a more ecological-based production system for producing high quality apples with reduced fungicide input.