Quote:
Originally Posted by RayR
PM showed up on my squash this week so tonight I mixed up a gallon and sprayed away.
I checked the PH of the mix and it was a little over 8.5 which is where you want it too be. PM spores can't tolerate a leaf surface with a high PH.
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Has anyone tried this as potential treatment of Septoria on tomatoes? A shot in the dark, but maybe the Septoria spores also don't like that PH?