Rot: nm The rot is a fungal disease of the vine, which has several forms (or colors).
- White burp. Disease occurring after hail on injured bunches which turn reddish and white, and present livid yellow spots forming concentric rings.
- Brown burp. Affected by downy mildew which causes more or less purplish browning, then drying of the berries.
If the attack is later, the grapes become depressed and take on a brownish hue...
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