Differentes Strategies de Maitrise de la Tavelure du Pommier

Apple scab remains one of the main disease, responsible for significant economic losses. Selection of tolerant varieties is a promising way to follow, but is not yet giving satisfying results. Thus, different strategies have to be developed and enhanced: the screening of alternative control inputs, with lower copper dosage or without any copper is essential for short term answers to growers. This research give interesting results and potential new ingredients, however not as efficient as copper sulphate. Simultaneously, biology of the fungus permits a more preventive strategy, by destroying leaves at fall season, and thus highly decreasing the scab infection potential. Results of four trials led by CTIFL (copper alternatives) and GRAB (leaves reduction) are resented and discussed