The management of eastern filbert blight (EFB) using DMI or strobilurin fungicides alone or in combination was effective. A model based on branch wetness, called GrammaCast, used fewer applications of fungicide and was as good as or worse than the standard program. Late fall or spring injections of fungicides will not be of benefit for the management of EFB. There were 3 Collembola, 7 mites and 13 fungi identified in association with EFB stroma. All research and extension projects were communicated to the hazelnut industry in a wide variety of ways.
1. In cooperation with hazelnut growers, establish field and greenhouse trials designed to evaluate new chemicals for effectiveness against EFB.
2. Develop and evaluate an easy-to-use ascospore forecasting model in cooperation with hazelnut growers to help determine the need for late spring applications of fungicides.
3. Evaluate tree injection technology for the therapeutic treatment of trees already infected with EFB.
4. Document and describe organisms associated with EFB cankers. Evaluate the potential of various organisms for biological control of EFB.
5. Disseminate results to the hazelnut industry in a variety of user friendly formats.