Yeah that makes sense...thanks! What do you spray for the several months prior to harvest? I am actually learning the hard way about mancozeb's 66 day PHI... have to forgo harvest this year since I sprayed up through early august.
The "rust" look in the pictures above doesn't seem like powdery mildew... although I will definitely take that advice and add something to the regimen to prevent it from occurring in the future. I just read on here a bit ago that Marquette might be sensitive to sulfur? Maybe best to use one of...
Neither from what I can tell. My profile picture is of a current cluster. Vines are 4 years old and haven't noticed any issues with the vine development that I can tell.
So I've got 27 vines of marquette but every year without fail the leaves seem to become diseased despite maintaining a strict fungicide (mancozeb) spray schedule. I'm not sure what the culprit is... pictures posted below in case anyone has any insight.
I used to have a section of traminette...
Pharmacist by day, aspiring vintner by night. Tried my hand at growing grapes for the first time ~7 years ago (gewürztraminer) without any experience and it went as well as you might expect. Between climate issues and fungal takeover ended up pulling up the crop (27 vines) and going with a more...