Pickling Cucumber and Watermelon Sessions: 9:30 am until 11:30 am Tuesday 11/29/22
It is never too early for watermelon producers in the Southeast to start thinking about management options for gummy stem blight disease. As Clemson Extension vegetable pathologist Tony Keinath puts it, “Early is on time.”
Growers have several effective chemical treatment options available for gummy stem blight and downy mildew control.
Resistance to fungicides is a concern with cucumber downy mildew, Pseudoperonospora cubensis clade 2. These fungicides still suppressed downy mildew well enough that yields of marketable-sized fruit of a susceptible slicing cucumber were much better than not spraying.
CucCAP plant pathologist, Tony Keinath, will address gummy stem blight fungus resistance to Tebuconazole.
These fact sheets are published at Land-Grant Press by Clemson Extension and contain information pertinent to South Carolina. Diagnostics and management may vary in other states or countries.
On June 1, the CucCAP team observed Cucurbit Downy Mildew on cucumbers in North Carolina and Fusarium wilt on watermelon in South Carolina.
CucCAP plant pathologist, Anthony Keinath published a factsheet on cucurbit downy mildew management with sections on symptoms and signs, how cucurbit downy mildew spreads, cultural practices to limit cucurbit downy mildew, and spraying for cucurbit downy mildew.