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  • Crop & Disease management
    • Cucumber Disease Management
    • Melon Disease Management
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    • Integrated Disease Management
  • Breeding & Genomics
    • Development of Genomic Tools for Cucurbit Species
    • Cucurbit Genomics Database
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    • Breeding Cucumber for Disease Resistance
    • Breeding Melon for Disease Resistance
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Whitefly vectored plant virus

A number of whitefly-transmitted viruses, including cucurbit leaf crumple virus, cucurbit yellow stunting disorder virus, cucurbit chlorotic yellows virus, and squash vein yellowing virus, are able to infect and cause losses in cucurbit crops.

South Florida pest and disease hotline | March 2023

March 17, 2023March 21, 2023 cuccap Cucurbit Crop & Disease Management Resources

UF/IFAS entomologists report high whitefly populations on all crops. Scouts are reporting increasing whitefly pressure on vegetable crops with silverleaf symptoms showing on squash.

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Whiteflys infesting watermelon and squash

February 1, 2023February 1, 2023 cuccap Cucurbit Crop & Disease Management Resources

According to the Southe Florida Pest and Disease Hotline, whitefly levels are high in many crops including watermelon and squash.

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South Florida Vegetable Crop report

January 13, 2023September 29, 2023 cuccap Cucurbit Crop & Disease Management Resources

The South Florida Pest and Disease hotline reported on vegetable pests and diseases in January 2023.

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Freezing temperatures help manage whitefly populations

December 28, 2022January 24, 2023 cuccap Cucurbit Crop & Disease Management Resources

UGA Extension agents explain why warmer weather is not good for farmers with vegetables vulnerable to whitefly damage.

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December 2022 South Florida Pest and Disease Hotline

December 15, 2022December 20, 2022 cuccap Cucurbit Crop & Disease Management Resources

Whitefly populations are building in southwest Florida and have reached high levels in some locations. In Homestead, whiteflies are present in squash, cucumber, and watermelon. In Homestead melonworms are being found in squash, cucumber, and watermelon.

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South Florida Pest and Disease Hotline

November 23, 2022December 1, 2023 cuccap Cucurbit Crop & Disease Management Resources

South Florida Pest and Disease Hotline scouting report for November 22, 2022 including updates on Whiteflies, Aphids, Viruses,
Gummy Stem Blight, and Oomycete Diseases.

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Whitefly pressure in Florida | AgNet

November 11, 2022November 11, 2022 cuccap Cucurbit Crop & Disease Management Resources

Whitefly pressure in Southwest Florida has increased in previous weeks as rains have decreased, according to the South Florida Pest and Disease Hotline.

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Whitefly management in cucurbits

October 26, 2022 cuccap Cucurbit Crop & Disease Management Resources

Whiteflies migrate from winter vegetables to spring vegetables to agronomic 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, and cantaloupe are susceptible to these viruses.

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Featured Article

CucCAP scientists use cucumber core collection to map fruit quality traits

The CucCAP core collection, comprised of 388 accessions representing >96% of the genetic diversity for cucumber present in the U.S. National Plant Germplasm System, harbors important sources of disease resistance. As sources of resistance are often present in germplasm with poor fruit quality, scientists from Michigan State University characterized the collection for fifteen fruit quality traits. Genetic associations (QTL) for each trait were identified from genome-wide association studies (GWAS). Many of the genetic locations were in close vicinity to previously identified fruit trait QTL and candidate genes; several novel loci and genes potentially important for these traits were also identified.

For further reading:

Lin YC, Weng Y, Fei Z, Grumet R. 2025. Mining the cucumber core collection: phenotypic and genetic characterization of morphological diversity for fruit quality characteristics. Horticulture Research 12:uhae340.

 

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USDA National Institute of Food and Agriculture U.S. DEPARTMENT OF AGRICULTURE

The Cucurbit Coordinated Agricultural Project (CucCAP) is a USDA-National Institute of Food and Agriculture Specialty Crop Research Initiative grant under award number
2020-51181-32139.

Cooperating Institutions:

Boyce Thompson Institute; Cornell University; Michigan State University; North Carolina State University; Clemson University; University of Puerto Rico; University of Wisconsin; University of Florida; University of Georgia; West Virginia State University; U.S. Department of Agriculture, Agricultural Research Service

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