Recent progress in integrated sanitation practices to manage apple scab
Abstract: Sanitation practices to control apple scab, caused by Venturia inaequalis (Cke.) Wint., are aimed at reducing the primary inoculum, with the expectation that there will be an approximate reduction in primary scab, but the reduction in primary scab may be much less than expected. Two recent publications are reviewed that allow an analysis of the major factors that influence the relationship between the reduction in ascospores trapped and leaf litter (the source of ascospores) and the reduction in primary scab on spur leaves and on older leaves and fruit in sanitized compared to non-sanitized plots. Suggested guidelines for sanitation trials based on the analyses are presented.