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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Symptoms typical of severe anthracnose infection on blackberry.
Blackberry Fruit Disorders - Effects on Fruit Quality - Articles Articles
This article discusses some common blackberry fruit issues, including whitening of drupelets, drupelet reddening, insect feeding injury, canker diseases and spotted wing drosophila. More
Source: SCRI-Dundee , Scottish Crop Research Institute, Bugwood.org
Bramble Diseases - Viruses - Articles Articles
Virus diseases can seriously damage brambles, especially raspberries, and can affect the lifetime of a planting. More
Blueberry Diseases - Virus Control
Blueberry Diseases - Virus Control - Articles Articles
Blueberries are susceptible to a number of virus and virus-like diseases. More
Raspberry Mosaic Virus. Photo by K. Demchak.
Bramble Diseases - Virus Control - Articles Articles
Control measures for virus diseases in brambles are aimed mainly at removing sources of the virus from within and around the planting. More
Strawberry Disease - Verticillium Wilt
Strawberry Disease - Verticillium Wilt - Articles Articles
Verticillium wilt of strawberry, caused by the soilborne fungus Verticillium albo-atrum, infects more than 300 kinds of cultivated plants. More
Bramble Disease - Verticillium Wilt
Bramble Disease - Verticillium Wilt - Articles Articles
Verticillium wilt is caused by two common soilborne fungi (Verticillium dahliae and Verticillium albo-atrum) that have a wide host range and attack more than 300 woody and herbaceous plants. More
Source: Mary Ann Hansen, Virginia Polytechnic Institute and State University, Bugwood.org
Bramble Disease - Spur Blight - Articles Articles
Red and purple raspberries are more affected by spur blight, Didymella applanata, than black raspberries. Blackberries appear to be immune. More
Source: SCRI-Dundee , Scottish Crop Research Institute, Bugwood.org
Strawberry Disease - Red Stele - Articles Articles
Red stele, or red core, Phytophthora fragariae, is the most serious disease of strawberry in areas with cool, moist soil conditions. More
Blueberry Disease - Powdery Mildew, Not Symptoms You’d Expect
Blueberry Disease - Powdery Mildew, Not Symptoms You’d Expect - Articles Articles
Powdery mildew, a warm-weather high-humidity disease, is present in some blueberry plantings. Lowbush, highbush, and rabbiteye blueberries are all affected. 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
Source: André Bolay, St. Fédér. de Recherches Agronomiques de Changins, Bugwood.org
Raspberry Disease - Phytophthora Root Rot - Articles Articles
Phytophthora root rot, Phytophthora species, is now regarded as a major cause of declining red raspberry plantings. More
Source: Edward Beasley, University of Georgia, Bugwood.org
Blueberry Disease - Mummy Berry - Articles Articles
Mummy berry, Monilinia vaccinii-corymbosi, is the most serious and widespread disease of highbush, lowbush, and rabbiteye blueberries. It is most serious following moist, spring weather conditions. 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
Source: Frank Louws, NCSU.
Strawberry Disease - Leather Rot - Articles Articles
Leather, or crown rot, Phytophthora cactorum, infection is favored by warm, wet weather and poorly drained soil. The fungus attacks berries in the field at all stages of growth. More
Source: Edward Sikora, Auburn University, Bugwood.org
Strawberry Disease - Leaf Spots - Articles Articles
A wide array of leaf spots infect strawberries, including birds-eye leaf spot, black leaf spot, septoria leaf spot, cercospora leaf spot, alternaria leaf spot, red spot, and angular leaf spot. More
Source: B. Martin. USDA-ARS Horticulture Crops Research Unit
Bramble Disease - Leaf Curl Virus - Articles Articles
Raspberries are affected more severely by leaf curl than are blackberries. More
Photo by Kathy Demchak.
Strawberry Disease - Gray Mold - Articles Articles
Gray mold, or botrytis blight, Botrytis cinerea, causes a greater loss of strawberry flowers and fruit than any other disease. It is found on green as well as ripening and harvested fruit. More
stem canker (Leptosphaeria coniothyrium). Photo: Florida Division of Plant Industry , Florida Department of Agriculture and Consumer Services, Bugwood.org
Bramble Disease - Cane Blight - Articles Articles
Cane blight is caused by the fungus Leptosphaeria coniothyrium, which also causes a canker on roses and a fruit rot of apple and pear. 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
Photo by Kathy Demchak.
Strawberry Disease - Anthracnose - Articles Articles
Anthracnose, caused by species in the genus Colletotrichum, can manifest as a fruit rot, crown rot, and/or leaf spots, as well as lesions on petioles and runner stolons. More
Photo by Kathy Demchak.
Raspberry Disease - Anthracnose - Articles Articles
Anthracnose, commonly called "cane spot" or "gray bark," occurs in several species of Rubus. More
Photo by Kathy Demchak.
Strawberry Disease - Angular Leaf Spot - Articles Articles
Angular leaf spot, caused by the bacterium Xanthomonas fragariae, is frequently problematic in strawberry plantings. More
Angular leaf spot close up. (Photo by K. Demchak)
Strawberry Disease - Angular Leaf Spot Favors Cold, Wet Conditions - Articles Articles
Angular leaf spot, caused by the bacterium Xanthomonas fragariae, is most prevalent in cold, wet conditions. 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
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
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