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    • Project Overview
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  • Crop & Disease management
    • Cucumber Disease Management
    • Melon Disease Management
    • Squash Disease Management
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  • 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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    • Breeding Watermelon for Disease Resistance
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CucCAP Project Team

Contributions to the CucCAP project by the Bioinformatics Team, Cucurbit Crop Breeding Teams, and the Integrated Disease Management Team.

2023 Watermelon trial for Fusarium resistance

July 27, 2023July 27, 2023 cuccap CucCAP Disease Management Team, Cucurbit Crop & Disease Management

Delaying transplanting until the soil has warmed to about 81 degrees at a 4-inch depth can reduce the number of plants with Fusarium wilt.
Eleanor and Fascination are partially resistant cultivars that have been shown to perform better when Fusarium wilt is present. But grafting is more effective…and more expensive

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Cucurbit downy mildew in Michigan

July 20, 2023 cuccap CucCAP Disease Management Team, Cucurbit disease and pest reports

The first symptoms of cucurbit downy mildew disease on pickling cucumber plants in a commercial production field have been verifiedby qPCR in the Saginaw County lab on July 19, 2023. The statewide spore trapping network to detect downy mildew spores in the air has had positives in multiple counties.

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SC Grower Exchange Podcast | Cucurbit Downy Mildew

July 5, 2023July 19, 2023 cuccap CucCAP Disease Management Team, Cucurbit Crop & Disease Management

The June 30 episode of The SC Grower Exchange podcast features CucCAP plant pathologist Dr. Anthony Keinath as he discusses downy mildew in cucurbits and other vegetables.

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Cucumber downy mildew arrives in South Carolina

July 2, 2023July 24, 2023 cuccap CucCAP Disease Management Team, Cucurbit Crop & Disease Management

This article for gardeners is published in The Post and Courier, a Charleston S.C. newspaper. The article discusses Cucurbit downy mildew on several varieties of cucumber, other cucurbits, and other crops.

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Michigan cucurbit report – June 28, 2023

June 29, 2023July 19, 2023 cuccap CucCAP Disease Management Team, Cucurbit disease and pest reports

Clade 2 downy mildew spores were trapped in Michigan last week. Phytophthora infested surface waters may be the only source for irrigation in some areas.

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CucCAP scientists identify gene for short-vining cucumber plants

June 27, 2023July 20, 2023 cuccap CucCAP Cucumber Team, CucCAP Featured Articles

The compact (cp) phenotype in cucumber is an important plant architecture-related trait with potential for breeding short-vining cucumber plants for high density planting and mechanized harvest.

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Disease Factsheets for Emerging Viruses

June 23, 2023September 26, 2023 cuccap CucCAP Disease Management Team, Cucurbit Disease Factsheets & Vegetable Crop Production Manuals

The Emerging Viruses in Cucurbits Working Group includes members from the CucCAP team. The EVCWG website provides resources for Cucurbit growers including virus factsheets. Visit the CucCAP disease management pages to find links to disease factsheets for these viruses and other Cucurbit diseases.

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Phytophthora capsici in irrigation water

June 23, 2023June 23, 2023 cuccap CucCAP Disease Management Team, Cucurbit Crop & Disease Management

CucCAP vegetable pathologist Dr. Mary Hausbeck discusses how Phytophthora capsici can be introduced to crops when irrigating vegetables with surface water during dry conditions.

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CucCAP scientists find high prevalence of gummy stem blight resistance to common fungicides

Featured Article

The gummy stem blight fungus, Stagonosporopsis citrulli, is now resistant to fungicides in four chemical classes. The newest resistance is to fungicides in FRAC Code 3. Most isolates (94% of 251) collected from watermelon in South Carolina in 2019 and 2021 were moderately resistant to tebuconazole, a fungicide widely used on watermelon because it is available in low-cost generic products. Highly resistant isolates were cross-resistant to five other fungicides in the same chemical class as tebuconazole: tetraconazole, flutriafol, difenoconazole, prothioconazole, and the newly registered mefentrifluconazole. Currently, only 4% of the isolates are highly resistant, so growers are encouraged to limit use of tebuconazole to one early season application to avoid shifting the population from moderately resistant to resistant.

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Cucurbit Disease Management

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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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