By Bhabesh Dutta, Downy mildew of cucumber has been detected from the Brooks County, GA. These observations indicate that inoculum of downy mildew is currently in southern GA counties and under favorable conditions potential disease outbreak in other cucurbits can occur. I would suggest our cucurbit growers to look for the downy mildew symptoms in their fields and start applying protective spray of below stated fungicides.
Watermelon: Rotation (foliar application) with Orondis ultra (provide protection against both Downy and P. capsici);
Please do not use Bravo after fruit set.
Other cucurbits: Orondis opti;
If Orondis was used as a soil application, please do not use it as foliar (use restriction according to label).