Apple scab is the primary fungal disease in apple cultivation affecting entire harvests as well as the following year's production. The damage can occur both in the plant and during storage. In organic farming, scab control is mostly carried out using precautionary measures. Plant protection products are used for direct control before the onset of rain and during spore germination as "scab stop". Combining robust and resistant varieties with the proper agronomic practices and forecasting methods to optimize treatments reduces the need for biological plant protection.