Ten Common Plant Diseases / Disorders You Can Diagnose by Eye
This fact sheet provided a list of 10 relatively easy to identify plant diseases.
Diseases & Disorders
Tobacco Mosaic
Tobacco mosaic causing a blotchy light and dark coloring (mosaic) of tobacco leaves. Tobacco mosaic causing a blotchy light and dark coloring (mosaic) of tobacco leaves.
Verticillium Wilt of Vegetables
Authors: Ken Frost* and Brian Hudelson, UW-Madison Plant Pathology Last Revised: 05/05/2013 X-number: XHT1146 What is Verticillium wilt? Verticillium wilt is a typically fatal disease that affects a wide range of vegetable crops in Wisconsin. Vegetables commonly and severely affected by Verticillium wilt include tomato, potato, pepper, eggplant, cucumber, muskmelon, pumpkin and watermelon. Other vegetables […]
Bacterial Wilt of Cucurbits
What is bacterial wilt? Bacterial wilt is a common and destructive disease that affects cucurbits (i.e., plants in the cucumber family), including economically important crops such as melon (Cucumis melo), cucumber (Cucumis sativus) and, to a lesser extent, squash and pumpkin (Cucurbita spp.). This disease is distributed throughout the United States; and can be found anywhere that cucurbits are grown.
Tomato Spotted Wilt of Potato
Tomato spotted wilt is a common viral disease of worldwide distribution that can affect over 1000 plant species. Economically important hosts include a wide range of vegetables, fruits, field crops, and ornamentals. Many weeds are also potential hosts.
Degree Day Calculation
Karen Delahaut, UW-Madison Fresh Market Vegetable Program Revised: 8/6/2012 Item number: XHT1086 Indicator plants are not always suitable for the timing of pest management practices. You may not have the critical indicator plant nearby to time local activities, or there may not be a good indicator plant for a particular pest’s crucial life stage. Another […]
Phenology
Karen Delahaut, UW-Madison Fresh Market Vegetable Program Revised: 5/17/2012 Item number: XHT1085 The word phenology is derived from the Greek word phaino meaning “to show” or “to appear”. Phenology is a branch of science that studies the relationships between periodic biological events—usually the life cycles of plants and animals—and environmental changes. Natural events such as […]
Home Vegetable Garden Fungicides
Diseases of vegetable plants can pose a challenge for the home gardener. While cultural methods are the preferred options for disease management in home vegetable gardens, if diseases become problematic, fungicide treatments are also an option. This guide will help identify some of the common, and most suitable, fungicides.
Hot-Water Seed Treatment for Disease Management
Growing vegetables from seed is a common practice for many home gardeners. Unfortunately, vegetable seed can sometimes be contaminated with disease-causing organisms, particularly disease-causing bacteria. Learn how to use hot water treatment to reduce pathogens that may be carried on seeds in this guide.
Bacterial Spot of Tomato
Bacterial spot of tomato is a potentially devastating disease that, in severe cases, can lead to unmarketable fruit and even plant death. Bacterial spot can occur wherever tomatoes are grown, but is found most frequently in warm, wet climates, as well as in greenhouses. Symptoms and management are covered in this factsheet.
Bacterial Speck of Tomato
Bacterial speck is a common disease of tomato that occurs worldwide. The disease can substantially reduce yield when it severely affects leaves early in the growing season, and can have an even greater impact on quality when symptoms occur on tomato fruit. Learn about this disease and ways to prevent it in this factsheet.
Cucumber Mosaic
Cucumber mosaic is a viral disease of worldwide distribution that affects over 1200 plant species. Hosts include a wide range of fruits, vegetables, herbaceous and woody ornamentals, and weeds. This factsheet covers identification and ways to prevent this incurable disease.
