Powdery mildew - Grapes

Erysiphe necator
Powdery mildew (Erysiphe necator) is a widespread and common disease of grapes in New Zealand. Obvious as white spots which can spread across leaves producing a grey-white sporulation. Bunches are also infected with the characteristic grey-white sporulation symptoms. Winemakers detest powdery mildew as even minor infection of grapes has a detrimental effect on subsequent wine quality.
Powdery Mildew

Read about using Luna Sensation to control Powdery Mildew in grapes
Powdery Mildew

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