Plant Disease Identification and Control

Information on plant disease identification and control, including rot, freeze damage, rust, blight, mold, scales, bacteria, viruses, fungus, wilt, mildew, gall, mites, moths and cankers. Tips on integrated pest management and herbicide summaries.

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Downy mildew on pumpkin. Photo: Beth K. Gugino, Penn State
Vegetable Disease Updates: August 30, 2017 - Articles Articles
Within the past week, there have been three separate reports of downy mildew on jack-o-lantern pumpkin in eastern Virginia. More
Photo credit: B. Gugino
Plant Disease Basics and Diagnosis - Articles Articles
A plant disease is a dynamic process where a living or nonliving entity interferes with the normal functions of a plant over a period of time. More
Tomato late blight. Photo credit Beth Gugino, Penn State Plant Pathology.
Plant Disease Basics - The Disease Triangle - Articles Articles
Disease management begins with the fundamental understanding the three factors must be present and interact for disease to develop. More
Pest and Plant Disease Prediction Tools
Pest and Plant Disease Prediction Tools - Articles Articles
There are several online tools to help you monitor and keep up to date on the proximity and likelihood for pests and plant diseases. More