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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University of Georgia Plant Pathology, University of Georgia, Bugwood.org
Grape Disease - Black Rot Photo Gallery - Articles Articles
Slideshow depicting various stages of black rot on grapes. More
Gerald Holmes, California Polytechnic State University at San Luis Obispo, Bugwood.org
Home Orchards: Table 2.4. Plant Protection Materials - Articles Articles
Informational table showing pesticides available for home garden use on various fruit crops. More
Home Fruit Gardens: Table 1.2. Monthly Maintenance
Home Fruit Gardens: Table 1.2. Monthly Maintenance - Articles Articles
Your schedule may vary from the one below by as much as 2 weeks (earlier or later) depending on the region of Pennsylvania in which you are located. More
Home Orchard: Table 2.3. Pesticide Application Amounts Home Orchard: Table 2.3. Pesticide Application Amounts - Articles
Informational table showing pesticide application amounts on fruit. More
Black Rot on Grapes in Home Gardens
Black Rot on Grapes in Home Gardens - Articles Articles
When weather conditions are exceptionally favorable for black rot, many home gardeners have problems. More
Powdery Mildew of Grapes in Home Gardens
Powdery Mildew of Grapes in Home Gardens - Articles Articles
Powdery mildew, caused by the fungus Uncinula necator, can be found in most areas of the world where grapes are grown. 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
John Hartman, University of Kentucky, Bugwood.org
Grape Disease - Crown Gall - Articles Articles
Crown gall, Agrobacterium tumefaciens, is characterized by galls or overgrowths that form on the roots, trunk, and arms of grape vines. V. vinifera are more susceptible than V. labrusca varieties. More
Botrytis infection at site of feeding damage. Photo by Kathy Demchak.
Bramble Disease - Botrytis - Articles Articles
Botrytis fruit rot or gray mold, Botrytis cinerea, is the most common and most serious disease of Rubus species worldwide. More
Grape Disease - Botrytis Bunch Rot
Grape Disease - Botrytis Bunch Rot - Articles Articles
Botrytis bunch rot, or gray mold, exists in all vineyards worldwide. This disease is caused by the fungus Botrytis cinerea and is commonly associated with the decay of ripe or nearly ripe grapes. More
Photo by Kathy Demchak.
Grape Disease - Black Rot - Articles Articles

Grape Disease - Black Rot

Kathy Demchak

Black rot, Guignardia bidwelli, is one of the most serious diseases of grapes in the eastern United States. More
Plant Quality in Home Fruit Plantings
Plant Quality in Home Fruit Plantings - Articles Articles
Purchase well-grown, heavily rooted, one-year-old plants of all fruits except blueberries and brambles. Two-year-old blueberry plants are recommended. More
University of Georgia Plant Pathology, University of Georgia, Bugwood.org
Phomopsis Cane, Leaf Spot, and Fruit Rot in Home Vineyards - Articles Articles
Phomopsis cane, leaf spot, and fruit rot are widely distributed in vineyards. The disease can weaken vines, reduce yields, and lower fruit quality. More
Pests and Pesticides in Home Fruit Plantings
Pests and Pesticides in Home Fruit Plantings - Articles Articles
Can fruit crops be grown in the home garden without pesticides? The answer is yes, but fruit quantity and quality may decrease. More
Insect and Nematode Pests in Grapes in the Home Fruit Planting
Insect and Nematode Pests in Grapes in the Home Fruit Planting - Articles Articles
The following descriptions of insect damage are general guidelines that can vary in severity based on a number of factors. More
University of Georgia Plant Pathology, University of Georgia, Bugwood.org
Grape Disease - Eutypa Dieback - Articles Articles
Eutypa dieback, Eutypa lata, is a fungal disease appearing as cankers on trunks and arms of infected grapevines. It is one of the most destructive diseases on the woody tissue of grapes. More
University of Georgia Plant Pathology, University of Georgia, Bugwood.org
Botrytis Bunch Rot on Grapes in Home Gardens - Articles Articles
Botrytis bunch rot, or gray mold, is commonly associated with the decay of ripe or nearly ripe grapes. Temperature and damp climates favor disease development. More
Riesling vines that show severe dieback due to winter kill. Photo: Bryan Hed
Grape Disease - Crown Gall, A Growing Concern in Vineyards - Articles Articles
Research efforts are generating extensive information on management of crown gall in vineyards, and there are new solutions in the pipeline. 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