![]() ![]() The bands are there because at first the major veins in the leaves block the spread of the pathogen. The first symptom that catches your eye appears as bands of burned yellow on some leaves. Last year was the first year I saw it on most farms I visited in Maine. By 2008 it was in the Northeast, in Pennsylvania, New Jersey, New York and Massachusetts. In 2007 it was first reported in the United States in south Florida. It seems to have been spreading faster in the last decade. In the 20th century it was generally confined to African countries. Still, I want to highlight it, because last summer I received many calls about the mystery of basil dying midseason.īasil downy mildew is a new disease to our region, and it seems to be here to stay. One of these new problems is basil downy mildew – a difficult disease to discuss because I have no good solution for it. I don’t know if the weather, the climate or some other factor is to blame, but for the first time I am hearing about enough previously unheard-of problems to fill an entire hour of discussion. ![]() ![]() This winter I have been lecturing at organic growers’ meetings about new and emerging insects and diseases. Photo by Eric Sideman.Īnd on the lower leaf surface. See the video.Basil downy mildew on the upper surface of a leaf. Hausbeck’s research into the emerging cucurbit downy mildew problem in Michigan. ![]() MSU Extension News for Agriculture- Vegetables: 8 Jul.Ĭucurbit Downy Mildew Forecasting (ipmPIPE)Įnviro-weather Vegetable: weather-b ased pest, natural resources, and production management tools for vegetables Vegetable disease alert: Act now to protect cucumbers and onions. MSU Extension News for Agriculture- Vegetables: 22 Jul. Cucumber downy mildew update: Michigan State University manages spore detection network and welcomes plant samples. MSU Extension News for Agriculture- Vegetables: 29 Jul. Cucumber downy mildew disease confirmed in research plot in southwest Michigan. MSU Extension News for Agriculture- Vegetables: 22 Aug. Cucumber downy mildew moves across Michigan. MSU Extension News for Agriculture- Vegetables: 17 Jun. Cucumber downy mildew update on spore detection: Update from Michigan’s spore detection network for June 17, 2020. MSU Extension News for Agriculture- Vegetables: 22 Jun. First cucumber downy mildew outbreak of 2020 confirmed in Berrien County: Growers are urged to apply fungicides immediately. MSU Extension News for Agriculture- Vegetables: 30 Jun. Cucumber downy mildew moves across Michigan: A downy mildew outbreak has been found in cucumber fields in Monroe County. MSU Extension News for Agriculture- Vegetables: 27 May. First cucurbit downy mildew spores identified in air samples in Allegan County: Growers are urged to scout early plantings of cucumber and melon for downy mildew. Hausbeck, M., Peterson, A., and Higgins, D.MSU Extension News for Agriculture- Vegetables: 16 Jul. Cucumber downy mildew disease confirmed in Michigan. MSU Extension News for Agriculture- Vegetables: 23 Jul. Downy mildew confirmed on cucumbers in four Michigan counties. MSU Extension News for Agriculture- Vegetables: 13 Jun. First cucurbit downy mildew spores identified in air samples in Bay and Saginaw counties. Hausbeck, M., Peterson, A., and Uebbing, M.MSU Extension News for Agriculture- Vegetables: 25 Jul. Downy mildew detected on cukes in Muskegon and Allegan, several counties have positive spores in air samples. Hausbeck, M., Peterson, A., and Medina-Mora, C.MSU Extension News for Agriculture- Vegetables: 14 Jun. First 2023 cucurbit downy mildew spores identified in air samples in Bay County. MSU Extension News for Agriculture- Vegetables: 19 Jul. Disease detected on cukes in Saginaw County: Several counties have positive cucurbit downy mildew spores in air samples. MSU Extension News for Agriculture-Vegetables: Downy mildew articles How cucurbit downy mildew spores are monitored. ![]()
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