Downy mildew on jack-o-lantern pumpkin was reported for the region. Downy mildew has also been reported on summer squash in New Jersey and watermelon on Long Island, NY. These hosts are primarily affected by clade 1 isolates of cucurbit downy mildew. Before this, downy mildew has primarily been affecting cucumber and cantaloupe, which are largely affected by clade 2 isolates.
Cucurbit Crop & Disease Management Resources
Plant Disease clinics in the USA, Cucurbit disease forecasters, Field & Variety Trials, Cucurbit Variety Trials, Pest Management, Cucurbit Production manuals & handbooks, Disease diagnosis, Disease outbreaks, Extension news, and Cucurbit Grower news.
Late Summer Watermelon disease management
Clemson Extension Agents Provide Crop Updates
SEPTEMBER 14, 2022. Coastal Region update: “Fall watermelons are looking good. There is some disease around, so fungicide applications remain crucial. I am finding whiteflies in a few crops, too. As we move into fall, with increasing numbers of misty mornings, scouting for diseases is going to be very important.”.
Whiteflies on Cucurbits | AgNet
“The buildup of whiteflies is concerning since growers have planted their fall crops. Whiteflies can cause feeding injury issues in vegetables and transmit two viruses: cucurbit leaf crumple virus and cucurbit yellow stunting disorder virus. Vegetables like squash, zucchini, cucumber, cantaloupe and snap beans are most susceptible to these viruses.”
Cucurbit Downy Mildew updates September 2022 | ipmPIPE
Epidemic Status of cucurbit downy mildew (Pseudoperonospora cubensis) displayed on the website map for 9-22-2022 on all Cucurbit hosts. Disease observations on cucumber, squash, and pumpkin were reported in the previous seven days.
Impact of rain on Alabama pumpkin crop
Persistent rains in Northeast Alabama have sparked concerns about potential disease pressure among the region’s pumpkin farmers.
Watermelon Downy Mildew Alert
Midwest Vegetable Production Guide
The Midwest Vegetable Production Guide provides vegetable production information including fertility, variety, cultural, and pest management recommendations. Search for information from land-grant universities in eight midwestern states by pest, crop, or control measure.
Michigan Cucurbit update | August 31, 2022
Fungicides listed in the Midwest Vegetable Guide can be used to slow down Plectosporium blight in pumpkins.
