![]() ![]() Be sure to obtain current information about usage regulations and examine a current product label before applying any chemical. Individuals who use agricultural chemicals are responsible for ensuring that the intended use complies with current regulations and conforms to the product label. ![]() A&T State University nor discrimination against similar products or services not mentioned. The use of brand names and any mention or listing of commercial products or services in this publication does not imply endorsement by NC State University or N.C. Recommendations for the use of agricultural chemicals are included in this publication as a convenience to the reader. Greenhouse growers are strongly recommended to use there tolerant varieties since chemical control options in a greenhouse are very limited and the risk of fungicide resistance is very high. For slicing cucumber the varieties SV3462CS and SV4142CL are tolerant to clade 2 isolates causing cucumber downy mildew. For pickling cucumber the varieties Citadel and Peacemaker from Seminis are tolerant to clade 2 isolates causing cucumber downy mildew. cubensis clade 1 isolates but there is no resistance available for clade 2 isolates. Most cucumber varieties commercially available are resistant to P. ![]() Check label for restrictions of number of applications to plan your program. Because rain favors this disease, when possible protect crops before and after a rain event. Once the disease is reported in the state, using the highest rate labeled for products will result in better control and lower risk of fungicide resistance. Active ingredientįor example, in squash before disease is reported in the state you can use: Presidio + Bravo, alternated with Zampro + Bravo, alternated with Tanos + Bravo every 10 days.Īfter disease is reported in the state you can use: Ranman + Bravo, alternated with Previcur Flex + Bravo, alternated with Orondis Opti every 7 to 10 days, with the shorter interval if the weather is wet and cool. Example products for cucurbit downy mildew control in watermelon, squash, and pumpkin. G Can be used in greenhouses, see label for restrictionsįor example, in cucumber before disease is reported in the state you can use: Ranman + Bravo, alternated with Elumin + Bravo, alternated with Omega + Bravo every 7 days.Īfter disease is reported in the state you can use: Ranman + Bravo, alternated with Previcur Flex + Bravo, alternated with Orondis Opti every 5 to 7 days, with the shorter interval if the weather is wet and cool. Example products for cucurbit downy mildew control in cucumber and cantaloupe. Fungicide labels are legal documents, always read and follow fungicide labels. For the latest fungicide recommendations for cucurbit downy mildew see the Southeastern US Vegetable Crop Handbook. Alternate products and tank mix with mancozeb or chlorothalonil to avoid generating fungicide-resistant strains. After disease is detected in your area apply fungicides at 5-day interval for cucumbers and 7-day intervals for other cucurbits. Before disease appears apply fungicides at 7-day interval for cucumbers and 10-day intervals for other cucurbits. Disease Control for Conventional Growers Skip to Disease Control for Conventional Growersįungicides are required to control cucurbit downy mildew. ![]()
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