Recent Updates: June 16: First reports from NC and MS. CDM has been confirmed on cucumber in Lenoir County, NC; and on cucumber and cantaloupe in Kemper County, MS.
CucCAP cientists Amnon Levi, Linda Wessel Beaver and Todd Wehner are members of the CGC Coordinating Committee. They collaborated with the Cucurbit research community to publish this report.
Pseudoperonospora cubensis, the causal agent of cucurbit downy mildew (CDM), was confirmed on cucumbers in Lenoir county on June 15. The sample was part of the CDM sentinel plots yearly deployed by the NC State Vegetable Pathology Lab.
South Georgia is on the brink of starting its watermelon harvest season. If farmers hope to capitalize with multiple harvests, they may need to apply chemical applications to protect against sunburn, which has been one of the few concerns during the production season.
Vegetable disease specialists from the University of Georgia discuss viruses affecting watermelon, squash and cucumbers including cucurbit leaf crumple virus, cucurbit yellow stunting disorder virus, and squash vein yellowing virus.
Downy mildew and powdery mildew on melons can spread from older, diseased plants to surrounding fields where plants are still maturing.
Bacterial fruit blotch caused by Acidovorax citrulli is a serious disease of watermelon (Citrullus lanatus) in the U.S. Currently, there are no varieties resistant to the disease. In a 3-year study, 1452 accessions and cultivars were tested for resistance to fruit blotch at the immature fruit stage, where resistance is most important for growers.
First cucurbit downy mildew spores identified in air samples in Allegan County
by: Mary Hausbeck, Annika Peterson and Doug Higgins