Three steps for Powdery mildew management

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.

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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.

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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.

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