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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
Dull, olive green areas visible on the undersides of leaves are the first evidence of apple scab.
Tree Fruit Disease - An Apple Scab Review - Articles Articles
Early season apple disease management is primarily directed at controlling scab. More
Home Orchards: Table 4.2. Non-Scab Resistant Apple Varieties
Home Orchards: Table 4.2. Non-Scab Resistant Apple Varieties - Articles Articles
Informational table showing apple varieties that are non-resistant to apple scab but recommended for home planting in Pennsylvania. More
Home Orchards: Table 4.1. Scab-resistant Apple Varieties Home Orchards: Table 4.1. Scab-resistant Apple Varieties - Articles
Informational table showing apple varieties that are resistant to apple scab and recommended for home planting in Pennsylvania. More
Home Orchards: Table 4.9. Pesticide Recommendations for Scab-resistant Apples Home Orchards: Table 4.9. Pesticide Recommendations for Scab-resistant Apples - Articles
The following spray schedule and times might vary by as much as 2 weeks, depending on the region of Pennsylvania in which the trees are located. More
Gerald Holmes, California Polytechnic State University at San Luis Obispo, Bugwood.org
Downy Mildew - Articles Articles

Downy Mildew

Gary W. Moorman, Ph.D.

Downy mildew is the common name for a group of highly specialized obligate parasites of vascular plants. More
Grape Disease - Downy Mildew
Grape Disease - Downy Mildew - Articles Articles
Downy mildew, Plasmopara viticola, can infect berries, leaves and young shoots. It occurs wherever it is wet and warm during the growing season. More
Scab-resistant Apple Varieties for Home Orchards
Scab-resistant Apple Varieties for Home Orchards - Articles Articles
Scab-resistant apple varieties are ideal selections for home fruit production. More
Apple Scab in the Home Fruit Garden
Apple Scab in the Home Fruit Garden - Articles Articles
Apple scab is Pennsylvania's most important apple disease, attacking wild and cultivated apple and crabapple. Early season disease management is primarily directed at controlling apple scab. More
Source: Howard F. Schwartz, Colorado State University, Bugwood.org
Pear Disease - Pear Scab - Articles Articles
Pear scab resembles apple scab in nearly all respects and is caused by the closely related fungus Venturia pirina. More
Typical fruit lesions are distinct, almost circular, rough-surfaced, olive-green spots up to ¾ inch in diameter. Heavily infected fruits are usually misshapen and may crack and drop prematurely. Photo by K. Peter.
Apple Disease - Apple Scab - Articles Articles

Apple Disease - Apple Scab

Kari A. Peter, Ph.D.

Apple scab, Ventura inaequalis, is Pennsylvania's most important apple disease, attacking wild and cultivated apple and crabapple. More
Orchard IPM - Apple Scab Scouting and Management
Orchard IPM - Apple Scab Scouting and Management - Articles Articles

Orchard IPM - Apple Scab Scouting and Management

Kari A. Peter, Ph.D., Tianna DuPont

Make sure you know where apple scab overwinters, how to monitor, and when it is most likely to appear. More
Protect tart cherries during bloom to prevent cherry leaf spot infection.
Tree Fruit Diseases - Spring Control Strategies - Articles Articles
May is the battleground month for disease management: be on alert for apple scab, fire blight, powdery mildew, rust, cherry leaf spot, brown rot, and bacterial spot infection conditions. More
Left: gray mold; right: anthracnose fruit rot.
Strawberry Disease - Fruit Rot Protection Begins at Bloom - Articles Articles
Our two main targets for bloom time protection of strawberries are gray mold/ Botrytis fruit rot, and, if you are growing susceptible varieties like Chandler, anthracnose fruit rot. More
University of Georgia Plant Pathology , University of Georgia, Bugwood.org
Downy Mildew on Grapes - Articles Articles
Downy mildew is caused by a fungus that can infect berries, leaves and young shoots. More