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Cucurbit Crop & Disease Management Resources

Plant Disease clinics in the USA, Cucurbit disease forecasters, Field & Variety Trials, Cucurbit Variety Trials, Pest Management, Cucurbit Production manuals & handbooks, Disease diagnosis, Disease outbreaks, Extension news, and Cucurbit Grower news.

Watermelon market reports | NWPB

August 23, 2022January 24, 2023 cuccap Cucurbit Crop & Disease Management Resources

The watermelon.org website provides a link to the NWPB’s LinkedIn site where visitors with a LinkedIn account can view weekly Watermelon Market Reports throughout the growing season.

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Michigan vegetable report | August 2022

August 23, 2022July 26, 2023 cuccap Cucurbit Crop & Disease Management Resources

Powdery mildew was reported on pumpkins and hard squash across the state. Downy mildew spores have been detected in all spore traps in the state’s network.

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Cucurbit Disease Treatment Options

August 23, 2022August 23, 2022 cuccap Cucurbit Crop & Disease Management Resources

Growers have several effective chemical treatment options available for gummy stem blight and downy mildew control.

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Cucurbit Downy Mildew updates August 2022 | ipmPIPE

August 16, 2022August 24, 2022 cuccap Cucurbit Crop & Disease Management Resources

The Cucurbit downy mildew forecast reports disease incidents from multiple locations in the United States. Website visitors have the option to receive alerts via email for a specific location.

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Managing common pumpkin pests | VGN

August 15, 2022August 19, 2022 cuccap Cucurbit Crop & Disease Management Resources

Recommendations for managing common pumpkin pests.

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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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Downy Mildew News | Long Island Horticultural Research & Extension

July 24, 2022July 27, 2022 cuccap Cucurbit Crop & Disease Management Resources

Symptoms were found on cucumber on 7/20 at a farm on the North Fork through the Cornell Cooperative Extension IPM Scouting Program.

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Cucurbit Downy Mildew updates July 2022 | ipmPIPE

July 20, 2022July 6, 2023 cuccap Cucurbit Crop & Disease Management Resources

The Cucurbit downy mildew forecast reports disease incidents from multiple locations in the United States. Website visitors have the option to receive alerts via email for a specific location.

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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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