Wednesday, December 17, 2008

Powdery Pressure increases - UPDATE 17/12/2008

Vineyard checks this week have seen a big increase in the amount of Powdery in the district. In most cases this is limited to leaf spots in fresh shoot tips or active lateral growth (top).

If there are signs of powdery on bunches, like the one shown above, in your vineyard, apply two sprays of a suitable registered fungicide at 10-day intervals in attempt to stop the disease increasing.

When protecting for Powdery avoid spraying wettable sulfur at high temperatures (>350C) when the humidity is >70% within 24 hours of spraying. Growers can opt to use Legendtm in hot weather to avoid sulfur burning. This allows them to keep up the protection on their vineyard.

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