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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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Early Career Scientist Spotlight | Samikshya Rijal

July 22, 2021July 22, 2021 cuccap CucCAP Watermelon Team

CucCAP scientist Samikshya Rijal is working on watermelon breeding and genetics. Her primary goal is to assist in the development of gummy stem blight (GSB) resistant breeding material.

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Wet Summer Impacts Crops | VSCNews

July 21, 2021August 27, 2024 cuccap Cucurbit Crop & Disease Management Resources

“Saturated soils can promote damping off, seedling blight and root rot in transplanted vegetables, especially in low lying areas of the field,”

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Cucurbit Downy Mildew epidemic updates July 2021 | ipmPIPE

July 20, 2021February 18, 2022 cuccap Cucurbit Crop & Disease Management Resources

Epidemic Status Map and updates for CDM (Pseudoperonospora cubensis).

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Clemson Extension Updates | VSCNews

July 19, 2021June 12, 2024 cuccap CucCAP Disease Management Team

CucCAP vegetable pathologist, Dr. Tony Keinath discusses fungicide stewardship.

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ONvegetables VCR | July 15, 2021

July 16, 2021August 5, 2024 cuccap Cucurbit Crop & Disease Management Resources

Cucurbit downy mildew has been confirmed on cucumber at one location in Norfolk County and two additional locations in Kent County. Squash bugs are active on pumpkins and squash.

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Michigan vegetable crop report – July 14, 2021

July 15, 2021July 26, 2023 cuccap Cucurbit Crop & Disease Management Resources

Michigan Extension agents and vegetable specialists report on pickling cucumbers, butternut squash, pumpkins and acorn squash this week and make recomendations for downy mildew control.

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Michigan vegetable crop report – July 7, 2021

July 8, 2021July 26, 2023 cuccap Cucurbit Crop & Disease Management Resources

Michigan Extension agents and specialists report on pumpkin and squash crops in the first week of July 2021 and recommend control measures for squash vine boarers and cucumber beatles.

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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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