![]() Schwartz, Colorado State University, Bugwood. This disease can also be transmitted on infected seed, so if you suspect a problem give them a hot water seed treatment at 127 degrees F for 25 minutes (or 1 part bleach to 10 parts water for 30 minutes). Avoid wetting plant leaves when irrigating (or water in the morning or early evening so they can dry out quickly). Staking also helps by improving sunlight penetration and air circulation (some gardeners deliberately prune off the lower leaves too). ![]() Mulch and stake tomato plants to keep soil from splashing onto the leaves. Minimize its effects by keeping your plants well fed and watered, as stressed plants are more susceptible. Roguing or removing infected plants immediately from the garden may help reduce the incidence of disease on additional plants. Joey Williamson, ©2012 HGIC, Clemson Extension. This fungus overwinters on weeds and decaying crop debris and spores may be transferred by rain, wind, tools, flea beetles and other insects. Early blight (Alternaria linariae) on tomato foliage. Potatoes usually show signs of infection as they enter the flowering stage. It likes warm (85 degrees F) wet weather.Įarly Blight most commonly attacks tomato and potato, but occasionally pepper and eggplant are affected too (though not usually as badly). There may also be dark sunken lesions on the stem and the fruit may rot from the stem end and drop. These slowly enlarge and merge and badly infected leaves eventually die (those at the bottom of the plant first and then progressing upward). It is a form of Alternaria Blight that first manifests itself as irregular shaped dark brown concentric spots on the shaded lower leaves. Alternaria solanii, Alternaria tomatophilaĮarly Blight is the most common tomato disease in more humid areas.
0 Comments
Leave a Reply. |