Downy mildew has been confirmed on cucumbers in four Michigan counties. CucCAP vegetable pathologist, Mary Hausbeck recommended that cucumber growers take agressive action due to recent humid conditions and presence of cucurbit downy mildew spores.
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 – July 14, 2021
Michigan Extension agents and vegetable specialists report on pickling cucumbers, butternut squash, pumpkins and acorn squash this week and make recomendations for downy mildew control.
Michigan vegetable crop report – July 7, 2021
Michigan Extension agents and specialists report on pumpkin and squash crops in the first week of July 2021 and recommend control measures for squash vine boarers and cucumber beatles.
Michigan vegetable crop report – June 30, 2021
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.
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.
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.
