Cucurbit downy mildew has not been reported in Michigan yet or in the Midwest, but spores were captured back in June.
MSU Extension
The Michigan State University Vegetable Pathology Lab reports cucurbit disease outbreaks and control measures for these pathogens. County Extension Agents from across the state of Michigan publish bi-weekly crop updates including disease incidents and control measures throughout the growing season.
Cucumber downy mildew update | MSU Extension Vegetables
Downy mildew on cucumber or any other cucurbit has not been confirmed yet in 2019 in Michigan or in adjacent states of the Great Lakes region. Our molecular analysis of the spore traps has recently confirmed cucumber downy mildew spores in the air via our molecular testing a couple of times, but this has not happened frequently or to the level that might be expected if downy mildew was well established in our production areas.
Mid-June Vegetable updates | MSU Extension Vegetables
Pickling cucumber planting delays continue. Some growers were setting aside their last sweet corn plantings to get pumpkins in last week.
Results of the 2018 Seedless Pickling Cucumber Variety Trial | MSU Extension Vegetables
A pickling cucumber variety trial was planted at the Saginaw Valley Research and Extension Center (43.399097, -83.694497, Frankenmuth, Michigan). Rijk Zwaan (RZ) and Bejo (BJ) seed companies donated parthenocarpic (seedless) cucumber seeds for the trial. A PDF version of this report can be found at the Midwest Vegetable Trial Report for 2018 website. Continue Reading
Downy mildew found in Michigan cucumbers in 2018 | MSU Extension Vegetables
Growers on the west side of Michigan should consider fungicide sprays for cucumbers and melons (watermelons, cantaloupe, muskmelon) now that downy mildew has been verified in Berrien County on July 24, 2018. Read this article from MSU Extension about the downy mildew outbreak.
Downy mildew recommendations for cucumbers | MSU Extension
For Michigan to remain the top producer of pickling cucumbers in the U.S., downy mildew must be controlled.
How Downy Mildew Spores Are Monitored | MSU Extension Vegetables
Spore traps are placed in the several sites in Michigan counties for the field season. Each trap operates by continuously pulling in air and all associated particles (spores, pollen, dust, etc.) and impacting them onto sticky tape on a reel inside the trap. The reel with the spores is brought back to the lab where downy mildew […]
