VT Apple IPM: Apple scab

I don’t have a lot more to say than I said last time- if you’re expecting rain, expect to protect your orchard from apple scab. We are entering the accelerated phase of primary apple scab season now, and given how wet it was last year I expect there is a fair amount of inoculum out there so that even small releases of spores (as a percent of total potential infection) could cause substantial disease. This week I made a quick video where I walk through my thinking regarding whether or not we need a fungicide in the UVM orchard using NEWA, how to predict spray windows using other online tools, and how to select the materials we will be applying using the New England Tree Fruit Management Guide.


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