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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
Red thread disease, Corticium fuciforme, on perennial ryegrass. Courtesy of C. J. O'Rourke.
Diseases of Forage Grasses in Humid Temperate Zones - Articles Articles
Forage grasses are subject to a multitude of leaf, stem, floral, and root diseases. More
Figure 1. Drain plugs must be sealed. Photo: PA Mushroom IPM Handbook
IPM in Mushroom Production: Exclusion Techniques for Pest Control - Articles Articles

IPM in Mushroom Production: Exclusion Techniques for Pest Control

Maria Gorgo-Gourovitch, David Meigs Beyer, Ph.D., John A. Pecchia, Ph.D.

Exclusion prevents the entrance of pest organisms into new rooms and their escape from older ones. The latter should not be underestimated. More
Container Grown Cucumbers, Zucchini and Squash
Container Grown Cucumbers, Zucchini and Squash - Articles Articles
This article, coupled with the advice in "Growing Great Container Vegetables #1: General Recommendations", will get you growing great cucumbers and squash. More
Photo by Kathy Demchak.
Strawberry Disease - Powdery Mildew - Articles Articles
Powdery mildew, Sphaerotheca macularis, occurs on a wide range of hosts and almost everywhere the strawberry is grown. 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
Source: William M. Brown Jr., Bugwood.org
Peach Disease - Powdery Mildew of Peach, Nectarine, and Apricot - Articles Articles
Powdery mildew, Sphaerotheca pannosa, sometimes called rose mildew (it affects some woody ornamentals), is not often serious. More
Source: Bruce Watt, University of Maine, Bugwood.org
Stone Fruit Disease - Powdery Mildew of Cherry and Plum - Articles Articles
The disease is caused by Podosphaeria oxyacanthae, one of the common species of the powdery mildew group of fungi. More
Powdery Mildew in Brambles in Home Fruit Plantings
Powdery Mildew in Brambles in Home Fruit Plantings - Articles Articles
Powdery mildew is occasionally a serious problem on susceptible varieties of red and black raspberries. Infected plants may be stunted and less productive. More
Powdery Mildew of Strawberries in Home Fruit Plantings
Powdery Mildew of Strawberries in Home Fruit Plantings - Articles Articles
Powdery mildew is observed mostly as a foliage disease, but it occasionally causes a serious fruit rot. Severe foliar infection can damage leaves and reduce photosynthesis. More
Disease Descriptions for Gooseberries and Currants
Disease Descriptions for Gooseberries and Currants - Articles Articles
The more common diseases found on currants and gooseberries are anthracnose, leaf spot, and powdery mildew. The most common virus disease is currant mosaic. More
Powdery Mildew of Apple in the Home Fruit Planting
Powdery Mildew of Apple in the Home Fruit Planting - Articles Articles
Powdery mildew attacks buds, blossoms, leaves, new shoots, and fruit of apples and and reduces shoot growth and fruit set, and produces a netlike russet on the fruit of some varieties. More
Powdery Mildew of Peach, Nectarine, and Apricot in Home Fruit Plantings
Powdery Mildew of Peach, Nectarine, and Apricot in Home Fruit Plantings - Articles Articles
Powdery mildew, sometimes called "rose mildew" can attack leaves, twigs, and fruit. More
Powdery Mildew of Cherry and Plum in Home Fruit Plantings
Powdery Mildew of Cherry and Plum in Home Fruit Plantings - Articles Articles
This disease is caused by Podosphaera clandestina, one of the common species of the powdery mildew group of fungi. More
Rusty spot is recognized only on the fruit. The earliest symptoms on young green fruit appear as small, orange-tan spots. K. Peter.
Peach Disease - Rusty Spot - Articles Articles

Peach Disease - Rusty Spot

Kari A. Peter, Ph.D.

Minor issue in Pennsylvania and is caused by the same fungus as apple powdery mildew. Loring is a susceptible variety. More
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