UGA Extension Viticulture Blog

Pierce’s Disease Action Items

Pierce’s disease (PD) is showing up in numerous vineyards on quite a few grape varieties — V. vinifera and hybrids. Vines should be scouted in each vineyard for the three characteristic symptoms of PD: leaf scorch showing marginal chlorosis and necrosis, leafless petioles “match-sticks”, and “green islands” on the canes….
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Sour Rot Reported — Management Plan

Sour rot is showing up in some Georgia vineyards (see photo below), and this is really no surprise with our environment.  The classic vinegar smell in the vineyard helps to identify sour rot, as other rots are somewhat similar as they initially develop. We have issues with this disease complex…
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Powdery Mildew Management Questions — Answers from an International Workshop on Powdery Mildew

I recently had questions at a grower meeting about several aspects of powdery mildew management.  I am currently attending an international meeting on powdery mildew, so it is very helpful to have my opinions supported by true experts in the field of powdery mildew management.  Relative powdery mildew, the following…
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Sour Rot Management

After the meeting on Wednesday, there was a request for more information on sour rot management through use of insecticides for control of SWD.  I contacted Megan Hall, who conducted this research at Cornell.  She indicated that the 2016 research continued to support the use of MustangMaxx.  She states, “If…
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