Downy Mildew - UPDATE 17/3/2011

Very serious infections of Downy Mildew are now obvious in vineyards that were not adequately protected this growing season. This is showing up as severe leaf burning (below).

Grapevine leaves with a high level of oilspots.
The main concern is that these heavily infected vineyards are defoliating, by infected leaves falling off and may not be able to ripen their crops.

Vine defoliation.
CropWatch 1011_vol8_31


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