Diseases

Disease can be a major limiting factor to the health and productivity of wild blueberry fields, making early identification and effective management essential for sustainable production. Here you’ll find resources to help you identify and manage common wild blueberry field diseases. For updates on disease observed in fields during the growing season and for real-time weather conditions visit the Wild Blueberry Blog and AgriNET page.

Questions About Wild Blueberry Diseases?

Contact Seanna Annis, Extension Specialist and Professor of Mycology, at sannis@maine.edu.

Disease Management Tools

Blueberries
Maine Wild Blueberry Blog
AgriNET app picture
AgriNet
Icon representing Fungicide Chart
Pesticide Charts

Monitoring and Identification Publications

frost damage - hand holding a blueberry branch
Frost vs. Disease (PDF)
A wild blueberry stem with brown dry flowers and gray spores symptomatic of mummy berry blight.
Forecasting Mummy Berry Infection
Wild blueberry foliage that is partially red from a fungal disease.
Blueberry Diseases 1
Blueberries
Production Schedule and Management Recommendations (PDF)
A wild blueberry stem with brown necrotic spots symptomatic of of Valdensinia leaf spot.
Identifying Valdensinia Leaf Spot

Cultural Management Publications

Close up blueberry stem with disease damage turing leaves brown at the tips
Disease Management Guide
A tractor pulling an oil rig burning a wild blueberry field.
The Influence of Pruning Methods on Disease and Insect Control
A wild blueberry field with a large patch of brown, dead plants.
Valdensinia Precautions
A close-up of a wild blueberry leaf with brown web-like necrotic lesions.
Sanitation for Valdensinia

Chemical Control Publications

A wild blueberry fruit cluster with gray, shriveled berries, symptomatic of mummy berry blight.
A Method to Control Monilinia Blight
A wild blueberry fruit cluster with several gray, shriveled fruit, symptomatic of mummy berry blight.
Botrytis Blight Control for Wild Blueberries

 

Information in these publications is provided purely for educational purposes. No responsibility is assumed for any problems associated with the use of products or services mentioned. No endorsement of products or companies is intended, nor is criticism of unnamed products or companies implied.