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Downy mildew in Norfolk County


July 14, 2009
By Fruit & Vegetable

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downymildewNEWS HIGHLIGHT

Downy mildew in Norfolk County

The Ontario Ministry of Agriculture,
Food and Rural Affairs is reporting downy mildew has been confirmed in
a pickling cucumber field near Vittoria, Ont.

July 14, 2009, Ridgetown, Ont. – The Ontario Ministry of Agriculture, Food and Rural Affairs is reporting downy mildew has been confirmed in a pickling cucumber field near Vittoria, Ont.

downymildew 
  

The lesions are less than one week old and affect approximately 20 per cent of the canopy.

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The current downy mildew control strategy recommends a seven day fungicide spray program rotating between Tattoo C and Ranman 400SC fungicides. Use the high rates as the canopy begins to close over and when the weather forecast is calling for cool, wet weather.

Apply fungicides in a minimum of 30 gal. of water per acre and ensure thorough coverage of all crop areas, including field edges.

Dithane and Bravo may be used for broad spectrum disease control in other vine crops such as cantaloupe, watermelons, pumpkins, squash and zuuchini. Note that these products will not provide sufficient control in cucumber crops at this time.


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