Components of a good PM management program:
1. Choose PM-tolerant or -resistant hybrids whenever possible to maximize host plant resistance against this disease.
2. Scout for PM beginning mid-summer on the upper and lower leaf surfaces throughout the field and leaf canopy. If even a few colonies are found, treatment should begin immediately and continue until harvest.
3. Know the Fungicide Resistance Action Code (FRAC) or mode of action (MOA) number (found on the label) for each fungicide used on your farm and how to rotate it.
Cucurbit Crop & Disease Management
Factsheets, Plant Disease clinics, Forecasters, Field Trials, Pest Management, Production manuals, Vegetable Pathology labs, Commodity Organizations, Disease diagnosis, Disease outbreaks, Extension Team, and Grower news.
South Florida Pest and Disease Hotline | Oct. 18, 2023
In Central Florida, reports indicate incidence of Cucurbit downy mildew (Pseudoperonospora cubensis) is increasing and Cucurbit leaf crumple virus (CuLCrV) incidence is very low.
In Southwest Florida, CuLCrV, Squash Vein Yellowing Virus and Cucurbit Yellow Stunting Disorder Virus were diagnosed. Gummy stem blight was reported on watermelons in older watermelon fields.
In Southwest Florida, Very low infestation levels of Cucurbit Downy Mildew were reported by field scouts.
South Florida pest and disease hotline | Oct. 8, 2023
Florida extension agents reported low to moderate levels of whiteflies on cucurbit crops in several regions. Whiteflies are vectors of several cucurbit viruses.
South Florida Whitefly Population update
Clemson Crop Update | 10/30/23
Squash are still hanging on, but with increased disease pressure from powdery mildew and the occasional out break of downy mildew. These plantings are on their last leg and are recommended to be terminated.
Disease Survey for Cucumber growers
You are invited to take part in a research study. Your participation in this study is voluntary. You have the right to be a part of this study, to choose not to participate, and to stop participating at any time without penalty. The purpose of this research study is to gain a better understanding of grower’s opinions on cucumber varieties.
Whitefly Scouting Guide
This field scouting guide concentrates on silverleaf whitefly or sweetpotato whitefly which transmits three important viruses in cucurbits: squash vein yellowing virus, cucurbit leaf crumple virus, and cucurbit yellow stunting disorder virus.
