Month: May 2026

1. Primary Apple Scab Season is Done; 2. Juniper Apple Rusts and Powdery Mildew Still a Risk for Infection; 3. Oncoming Risk From Sooty Blotch and Flyspeck Infections

1. Primary Apple Scab Season is Done; 2. Juniper Apple Rusts and Powdery Mildew Still a Risk for Infection; 3. Oncoming Risk From Sooty Blotch and Flyspeck Infections

1. Based on RIMpro model prediction, primary apple scab season has ended on 17 May in Winchester, VA, 14 May 2026 in Sperryville, VA, 12 May 2026 in Roseland, VA, and 8 May in Westfield, NC. The date when the sum of immature and mature 

1. Apple Scab Infection Took Place During Rains 6 – 7 May; 2. Primary Apple Scab Season Not Over Yet

1. Apple Scab Infection Took Place During Rains 6 – 7 May; 2. Primary Apple Scab Season Not Over Yet

We are very close to the end of primary apple scab season but we are not there yet. The rains on 6 – 7 May we talked about at an in orchard Extension Meeting in Syria, VA, will likely be the last severe scab infections 

First Fire blight Symptoms Visible on Flowers and Shoots in Madison County

First Fire blight Symptoms Visible on Flowers and Shoots in Madison County

As of 5 May 2026, first blossom blight and shoot blight symptoms were visible us in Madison County, Virginia (Figs 1 – 3). Most likely these infections of flowers have established either in the first week of April or mid April, with the latter being 

Fungicide Use Considerations in Frost Impacted Orchards

Fungicide Use Considerations in Frost Impacted Orchards

May 6 is still far away into the future to trust weather forecast accuracy. However, if any rat-tail bloom still stays open on young trees, on that day a streptomycin application will be needed in Roseland, VA, and Sperryville, VA (infection is predicted as of