I’ve learned that southern and central regions already seeing bud breaks among early varieties. Since early season protection (1-3 inches, no later than 3-5 inches) is a critical timing for Phomopsis management, I uploaded “Note on Phomopsis” which is a part of topics I will be presenting at the next vineyard meeting (4/29/2009). I’m planning to add information about black rot and powdery mildew in the near future to this note, but in the mean time, please take a look at this draft, especially if you have issues with Phomopsis in your vineyard. Hopefully, it will help your decision making.
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Disease management
A draft of Phomopsis note