The recent overcast, humid, and wet conditions ensure that the sporangia will survive being transported via air currents from a diseased field to healthy cucumbers.
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.
Michigan vegetable crop report – May 19, 2021
Transplanting has been underway across the state. Some early melons under vented plastic tunnels were exhibiting some symptoms that are hard to diagnose. Producing crops at the fringes of the season may result in symptoms caused by freeze damage in the field or heat stress in tunnels.
Michigan vegetable crop report – May 12, 2021
Transplanting of warm-season vegetables is set to ramp up at the end of this week in some areas, and direct-seeding continues. Cucumber, melon and squash transplants were between cotyledon and four true leaves in 50- and 72-cell transplant trays this week in Bay County, Michigan.
Vegetable and Root Crop Virtual Field Day | MSU Extension
MSU and industry researchers showcase research. Growers will see the results of ongoing crop research on the farms where the research findings can be implemented.
Michigan vegetable updates – Sept. 9, 2020
East, Southeast, and Southwest Michigan Cooperative Extension agents reported on crop production of zucchini squash, yellow squash, pumpkins, winter squashes, and cantaloupe. Powdery mildew arrived late this year, making management easier.
August 19, 2020 Vegetable Production Updates | MSU Extension
Squash, cucumbers, and pumpkins experienced disease pressure from plant viruses, powdery mildew, fusarium, and phytophthora in Michigan during the week of August 13 to 19, 2020.
August 2020 Michigan Vegetable Updates | MSU Extension
Michigan Cooperative Extension agents from East, Southeast, West, and Southwest Michigan published crop updates on cucumber, melon, watermelon, pumpkins, and winter squashes. Reports of pests include Downy mildew, Powdery mildew, and Squash bug.
Cucumber downy mildew update on spore detection | MSU Extension Vegetables
Our molecular analysis of the spore trap samples from Berrien County has recently confirmed cucumber downy mildew spores in the air for June 8, 10 and 13, 2020. For the Muskegon spore trap, there was a positive for cucumber downy mildew spores for June 8.