Penn State Extension

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The potato leafhopper, Empoasca fabae, is a pest that is easy to overlook until the damage - called "hopperburn" - "burns" you. Photo: Penn State College of Agriculture
Vegetable - Small Fruit Current Issues: June 28 2018 - News News
Wet weather and variable temperatures across the state continue to be challenging for vegetable and berry production. More
Pepper transplants. Photo: Tom Ford, Penn State
Vegetable - Small Fruit Current Issues: May 18, 2018 - News News
It’s no secret that this spring has been cold and wet across Pennsylvania. On many farms, planting has been delayed as much as three weeks, and many crops already in the ground are developing more slowly than usual. More
Brown rot can cause shoot blight. (Photo: K. Peter)
Tree Fruit Diseases - Brown Rot, Fire Blight, Root Rots - Articles Articles
With peach season in full swing, mid-season management strategies are reviewed. 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
Source: Bugwood.org
Tree Fruit Disease - Phytophthora Collar, Crown and Root Rots - Articles Articles
Phytophthora collar, crown, and root rots, Phytophthora cactorum, continue to be a major cause of tree death in Pennsylvania orchards. These rots can affect both pome and stone fruit. More
Cross-wall near base of branch
Rhizoctonia - Articles Articles

Rhizoctonia

Gary W. Moorman, Ph.D.

Rhizoctonia, a soil-borne fungus, is known to cause root rots, stem rots, damping-off and, in some cases, a blight of leaves. More
Paul Bachi, University of Kentucky Research and Education Center, Bugwood.org
Fungal Root Rots And Chemical Fungicide Use - Articles Articles
Root rots of floricultural and woody ornamental crops are one of the most important causes of crop loss. More
H.J. Larsen, Bugwood.org
Apple Crown and Collar Rot - Articles Articles
Crown rot, caused by fungi in the genus Phytophthora, is a major cause of tree death in orchards. The disease often occurs on heavy, poorly drained soils, and certain rootstocks are more susceptible. More