Vegetable Diseases Fact Sheets listed by Crop. Click on the name of the vegetable to get a listing of Fact Sheets and Information Bulletins relating to that specific crop. Asparagus | Beans | Beet | Broccoli | Brussels Sprouts | Cabbage | Carrot | Cauliflower | Celery | Cucumber | Eggplant | Lettuce | Melon | Onion | Peas | Pepper | Potato | Pumpkin | Spinach | Squash | Sweet Corn | Tomato | Watermelon | ALL. Vegetable Diseases Cornell Home Page. Tomato-Septoria leaf spot-mature lesions. Septoria Leaf Spot of Tomato (Septoria lycopersici) Mature lesions of Septoria leaf spot showing black, specklike pycnidial fruit bodies. Photo courtesy of T.A. Zitter, Cornell University, Ithaca, NY << Previous Photo | Next Photo>> Link to the Factsheet of Septoria Leaf Spot of Tomato Link to Photo Gallery of Septoria Leaf Spot of Tomato.
Tomato/Septoria-large lesions. Septoria Leaf Spot of Tomato (Septoria lycopersici) Sometimes, Septoria lesions can be quite large and have tan or whitish centers. Photo courtesy of T.A. Zitter, Cornell University, Ithaca, NY << Previous Photo | Next Photo>> Link to the Factsheet of Septoria Leaf Spot of Tomato Link to Photo Gallery of Septoria Leaf Spot of Tomato. Tomato Leaf Spots - Is it Late Blight, Early Blight, or Septoria Leaf Spot?
Is it Early Blight, Late Blight, or Septoria? : Early Blight: If you are dealing with Early Blight, the tomato leaves will have one or two spots per leaf, approximately ¼ to ½ inch in diameter. Spots have tan centers with concentric rings in them and yellow halos around the edges. The stems will develop dark, sunken cankers at or above the soil line, and the fruit will start to show dark, sunken spots on the stem end of fruits. There is no treatment for early blight. Late Blight: If your tomatoes have late blight, you will see spots that start out pale green, usually near the edges of tips of foliage, and turn brown to purplish-black. As with early blight, the method for dealing with late blight is to pull and destroy the plants, look for resistant varieties, and plant in a different part of the garden next year. Septoria Leaf Spot: If your tomatoes are infected, they will keep producing fruit.
Tomato Problems: how to identify and treat septoria leaf spot. Septoria leaf spot, caused by the fungus Septoria lycopersici, is sometimes mistaken for early blight in tomatoes – and vice versa. In fact, tomato plants can be infected with both at the same time. Fortunately, it’s not hard to distinguish between the two. Plus, they can be treated similarly. What does Septoria leaf spot look like? Lower leaves show symptoms first Round, yellow or water-soaked spots appear on the undersides of leaves. When does Septoria leaf spot affect plants? It can attack at any point in the season It strikes frequently in early to mid-season It’s most common in humid weather It often affects tomato plants after a period of heavy rainfall How do you control and treat leaf spot? The best control measure is prevention (see below). How do you prevent Septoria leaf spot? Rotate crops. Tomato problems from diseases Different kinds of tomato blight and how to tell them apart ...
How to identify and treat early blight ... How to identify and treat late blight ... Tomato pests.