Growers should consult Extension personnel when deducing what problem they might have. A wrong diagnosis could have financial repercussions.
Whitefly populations are increasing in all vegetable crops in the Homestead, Florida, area including high levels of whitefly populations in squash.
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.
Florida extension agents reported low to moderate levels of whiteflies on cucurbit crops in several regions. Whiteflies are vectors of several cucurbit viruses.
Whitefly populations are increasing across multiple areas in southern Florida.
A newly introduced polyphagous thrip on cucurbits and other vegetables
Cucumber downy mildew on cucumber was reported in Pennsylvania and Massachusetts between August 25 and September 12, 2023. CDM was reported on squash in N.C.
This disease was confirmed on squash in Johnson County, North Carolina on August 25, 2023. Disease incidence was approximately 15% and the affected leaves showed 45% disease severity.