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Georgia watermelons

UGA research benefits watermelon growers

July 12, 2023October 14, 2023 cuccap Cucurbit Crop & Disease Management Resources

UGA Extension is tasked with studying challenges with pollination, disease tolerance, yields, maturity, size distribution, brix, the sweetness, rind pattern and firmness of different varieties of watermelon and making recommendations to Georgia growers.

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Phytophthora concerns for Georgia watermelons

July 10, 2023October 14, 2023 cuccap Cucurbit Crop & Disease Management Resources

Phytophthora fruit rot is a water mold that attacks the fruits of watermelon plants. It thrives in rainy weather. It not only affects watermelons in the field, but also after harvest.

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Georgia watermelon market conditions

June 7, 2023August 4, 2023 cuccap Cucurbit Crop & Disease Management Resources

Cooler temperatures the past couple of weeks contributed to a delay of growth for Georgia watermelons this spring.

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Watermelon Crop Reports | AgNet Media

July 29, 2022August 3, 2022 cuccap Cucurbit Crop & Disease Management Resources

Heat and heavy rains impacted squash, cucumbers, and watermelon in Georgia and Alabama.

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Heat Impact on Watermelons | AgNet Media

June 28, 2022August 4, 2023 cuccap Cucurbit Crop & Disease Management Resources

What growers experience when temperatures approach 100 degrees Fahrenheit (F).

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Cucurbit Downy Mildew updates June 2022 | ipmPIPE

June 15, 2022August 4, 2023 cuccap Cucurbit Crop & Disease Management Resources

The Cucurbit downy mildew forecast website provides a map and list of recent disease outbreaks.

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Watermelon Crop Production outlook

April 15, 2022October 14, 2023 cuccap Cucurbit Crop & Disease Management Resources

University of Georgia Cooperative Extension describes the impact of cool temperatures, heavy rains and high winds in recent week on this year’s watermelon crop.

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Cucurbit crop reports for July 2021

July 22, 2021August 27, 2024 cuccap Cucurbit Crop & Disease Management Resources

Crop updates from SC Grower, MSU Extension, Vegetable and Specialty Crop news, and Florida Extension.

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Featured Article

CucCAP scientists identify markers for powdery mildew resistance in watermelon

Powdery mildew outbreaks, caused by Podosphaera xanthii, cause reduced yields and fruit quality in watermelon. CucCAP scientists at Clemson University and the USDA Vegetable Laboratory Charleston SC employed a bulked segregant analysis approach using data from 1147 accessions from the USDA Citrullus germplasm collection to perform an extreme-phenotype genome-wide association study (XP-GWAS) of tolerance to P. xanthii race 2W. Kompetitive Allele-Specific PCR (KASP) markers were designed for significant SNPs associated with reduced disease. The best marker in each region explained 21-31% of the variation in powdery mildew tolerance.

For further reading:

Branham et al., 2025. Extreme-phenotype genome-wide association study (XP-GWAS) of powdery mildew race 2 W tolerance in the USDA Citrullus germplasm collection. Scientific Reports. DOI10.1038/s41598-025-89445-8

 

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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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