Common diseases of Corn and Their Control: Goss’s Wilt
Karen Meyers Similar to Stewart’s wilt, this bacterial disease has two phases. The first appears early in the season and is characterized by orange to brown discoloration of diseased vascular tissues and…
Common Diseases of Corn and their Control: Stewart’s Wilt
Caused by the bacterium, Pantoea stewartii, Stewart’s wilt has two phases. The first affects seedlings that may develop linear pale green to yellow streaks, wilt and dry up. The second…
Common Diseases of Cucumber and Their Control: Angular Leaf Spot ( Pseudomonas syringae pv. lachrymans)
Karen Angular leaf spot is a bacterial disease affecting cucumber and other cucurbits, including squash, pumpkin, and melon. The infection begins with small, angular, brown to straw-colored water soaked spots on…
Common Diseases of Cucumber and Their Control: Bacterial Wilt
Caused by the bacterium, Erwinia tracheiphila, bacterial wilt affects cucumber and cantaloupe severely, squash and pumpkin less so, and watermelon rarely. The first symptom is the wilting of leaves during…
Common Diseases of Tomato and Their Control: Southern Bacterial Wilt
Southern bacterial wilt of tomato is a soil-borne disease caused by the bacterium, Ralstonia solanacearum. It also affects many other plants in the nightshade family (Solanaceae), including potato, eggplant, pepper,…
Common Diseases of Tomatoes and Their Control: Bacterial Spot
Bacterial spot is caused by several species of Xanthomonas, most commonly X. perforans, and is more prevalent in warm (75-86 F) humid climates with frequent rainfall (or overhead watering). The…