![]() ![]() ![]() Spores are produced when temperatures are between 41 and 86 degrees F. The spores and mycelia of the pathogen survive in infested plant debris and soil, in infected tubers and in overwintering host crops and weeds. ![]() If the disease is in its advanced stages, the tuber flesh looks water soaked and yellow to greenish yellow in color. If sliced open, the potato flesh will be brown, dry, and corky or leathery. The tubers will have dark gray to purple, circular to irregular lesions with raised edges. Dark brown to black spots may also occur on the stems of the plant. These lesions often look like a target, and, in fact, the disease is sometimes referred to as target spot.Īs the spots enlarge, they may cause the entire leaf to yellow and die but remain on the plant. Dark, brown spots appear on this older foliage and, as the disease progresses, enlarge, taking on an angular shape. Symptoms first occur on the lower or oldest leaves of the plant. Symptoms of Potatoes with Early BlightĮarly blight rarely affects young plants. In contrast to its name, early blight rarely develops early it actually usually affects mature foliage rather than young, tender leaves. Although not a terminal disease, severe infections can be fairly detrimental. Potatoes become infected with early blight when foliage has become excessively wet due to rain, fog, dew, or irrigation. The disease is caused by the fungus Alternaria solani, which can also afflict tomatoes and other members of the potato family. What is Potato Early Blight?Įarly blight of potato is a common disease found in most potato growing regions. What is potato early blight? Read on to learn how to identify potatoes with early blight and about potato early blight treatment. If your potato plants start to exhibit small, irregular dark brown spots on the lowest or oldest leaves, they may be afflicted with early blight of potatoes. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |