June 12, 2012
Wine grape season shaping up for powdery mildew
Once powdery mildew gets established, it does not need water or rain for infection - in fact, heavy rain is detrimental because it washes the spores from the leaves and causes them to burst.
Once powdery mildew gets established, it does not need water or rain for infection - in fact, heavy rain is detrimental because it washes the spores from the leaves and causes them to burst.