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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Hail damaged fruit need protection from fruit rots. Photo: T. Ford, Penn State
Managing Fruit Rots This Season - News News

Managing Fruit Rots This Season

07/26/2018

Fungicide re-applications are necessary since several inches of rain have fallen the last few days. Management considerations are discussed for mitigating pome and stone fruit rots. More
Michela Centinari, Penn State University
Grape Disease & Insect Management Workshop - Workshops Workshops
This workshop will address major disease and pest problems facing Pennsylvania grape growers. More
Georgia Department of Ag., Bugwood.org
It's Time to Plant! - Workshops Workshops
Come join Penn State Master Gardeners of Carbon County as they present their spring workshop "It's Time to Plant." More
Christmas Tree Growers Meeting & Trade Show
Christmas Tree Growers Meeting & Trade Show - Workshops Workshops
Christmas tree growers are invited to join us for a day of educational presentations, pesticide updates, and new product information. More
Christmas Tree, Ornamental & Turf Pest Management School
Christmas Tree, Ornamental & Turf Pest Management School - Workshops Workshops
This school will provide educational information and pesticide license credits for working with Christmas trees, landscapes, and turfgrass. More
Stay Alert for Oak Wilt!
Stay Alert for Oak Wilt! - Articles Articles

Stay Alert for Oak Wilt!

Sandy Feather

Oak wilt was not known in New York before 2008, but foresters and arborists are managing it there now. More
Explorando e Identificando Enfermedades en Tomates
Explorando e Identificando Enfermedades en Tomates - Videos Videos

Explorando e Identificando Enfermedades en Tomates

Marley E Skinner, Montserrat Fonseca Estrada, Tianna DuPont, Mike Basedow

8:37

Este video revisa los fundamentos de la exploración adecuada y la identificación de enfermedades comunes y sus síntomas. More
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
Late season fungicides needed to protect against fruit rot in storage. Photo: K. Peter, Penn State
Apple Disease, Pre- and Post-harvest - Keep Apples Free From Fruit Rot - Articles Articles
Management considerations are discussed for mitigating pome fruit rots before and after harvesting. More
Plant Health Diagnosis: Assessing Plant Diseases, Pests and Problems
Plant Health Diagnosis: Assessing Plant Diseases, Pests and Problems - Online Courses Online Courses
$59.00
Learn a process for diagnosing plant health problems, including signs and symptoms of diseases, pests and insects, and environment or management issues. More
Map of cucurbit downy mildew currently reported along the east coast as of 26 July 2017 (cdm.ipmpipe.org).
Vegetable Disease Updates for July 26, 2017 - News News
The rainy weather is not letting up and neither is downy mildew pressure. More
Postharvest fungicide sprays are necessary to prevent defoliation from cherry leaf spot. Photo: K. Peter, Penn State
Getting the Upper Hand on Tree Fruit Diseases in July - News News
Conditions may be optimal for several fungal and bacterial pome and stone fruit diseases in July. More
Scouting and Identifying Tomato Diseases
Scouting and Identifying Tomato Diseases - Videos Videos

Scouting and Identifying Tomato Diseases

Marley E Skinner, Mike Basedow

8:21

Tomatoes are an important and profitable crop for many vegetable growers. This video reviews the basics of proper scouting and identification of common diseases and their symptoms. More
Map of cucurbit downy mildew currently reported along the east coast as of 30 June 2017 (cdm.ipmpipe.org).
Vegetable Disease Updates for June 30, 2017 - News News
Be on the lookout for diseases, as well as timber rot in high tunnel tomatoes, that spread in some of the recent rain events that moved across the Pennsylvania. More
Photo 1. Early symptom of orange rust. Photo: K. Demchak
Bramble Disease - Managing Orange Rust - Articles Articles

Bramble Disease - Managing Orange Rust

Kathy Demchak, mahfuzur rahman

Orange rust, Gymnoconia nitens, is a systemic disease, any plants propagated from infected plants will also be infected. More
Bacterial spot on peach fruit. Photo by S. Bardsley.
Stone Fruit Disease - Bacterial Spot, Refining Disease Management - Articles Articles
Bacterial spot, Xanthomonas arboricola pv. pruni, is a difficult disease to manage. 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
Watch out for brown rot on sweet cherries. Photo: K. Peter, Penn State
Protecting Cherries From Brown Rot - News News
As the sweet cherry harvest commences, there are concerns about brown rot. Management options are discussed. More
Upper surface of affected shrub rose showing round leaf spots with an orange center on yellowing leaves. Image: R. Benner, Penn State
Rose Rust in the Landscape - Articles Articles
Rose Rust is uncommon on ornamental roses in Pennsylvania but it does occur, especially in mild, wet spring conditions. More
Photo: P. Landschoot, Penn State
SDHI Fungicides for Turfgrass Diseases - Articles Articles

SDHI Fungicides for Turfgrass Diseases

Peter Landschoot, Ph.D.

As summer approaches, plans are being finalized for disease prevention and control programs. More
Tobacco Mosaic Virus on petunia. Photo: T. Ford, Penn State
Tobacco Mosaic Virus Prevention Starts with Worker Training - Articles Articles
The most important way that Tobacco Mosaic Virus (TMV) can be spread from plant to plant is on workers' hands, clothing or on tools. More
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
Be vigilant and scout for apple scab! Photo: K. Peter, Penn State
June Diseases for the Grower Radar - News News
Diseases for the fruit grower radar and their management strategies are discussed as we wrap up May and begin June. More
Too late to manage peach leaf curl when symptoms are present. Photo: K. Peter, Penn State
Disease of the Month: Peach Leaf Curl - News News
Peach leaf curl has caught many folks off guard this year. Tips for preventing the disease next season are discussed. More
Protect any trees still in bloom: Fire blight conditions ideal April 29 through May 2. (Photo: K. Peter)
Fire Blight, Apple Scab, Rust, Plus Others: Be On Alert! - News News
Conditions are optimal for fire blight, apple scab, and rust infections. Growers are encouraged to keep trees protected. Other diseases for the fruit grower radar are also discussed. More
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