Tag Archives: Oomycetes

Cucurbit Downy Mildew 2012

We have yet to see downy mildew on cucurbits here in Louisiana this year, but it was recently reported on cucumbers in Baldwin County, Alabama, which is east of Mobile Bay. Growers, especially those growing watermelons and pumpkins, and county … Continue reading

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Impatiens Downy Mildew Update

Downy mildew was observed on Impatiens walleriana in a residential landscape in New Orleans today. The affected plants had been purchased at a “big box” store in the area, but it was not the same chain as the store in the … Continue reading

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Impatiens Downy Mildew Makes Its First Confirmed Appearance in the Louisiana Landscape

We had our first confirmed report of downy mildew on Impatiens walleriana here is south Louisiana this weekend. My wife commented that one of the double impatiens that she’d gotten at one of the big box stores a couple of weeks … Continue reading

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New Oomycete-specific Fungicide from Syngenta

Micora™, a new fungicide from Syngenta, is now registered for use on greenhouse and outdoor ornamentals and vegetable transplants to be sold to retail consumers. Micora™ contains the active ingredient mandipropamid (a carboxylic acid amide), which is specific for the … Continue reading

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Rose Downy Mildew Is Active in Louisiana

Received a call from a local garden center last week regarding downy mildew on a shipment of roses from California that they had hoped to sell for Mother’s Day. Symptoms on the somewhat resistant cultivar Mr. Lincoln could easily be mistaken for … Continue reading

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Tomato Late Blight Update

It’s now been over 5 weeks since I last received a report of late blight on tomatoes in Louisiana, so I have to assume that our “balmy” late spring/early summer weather is effectively keeping it in check.  However, this is not … Continue reading

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Cucurbit Downy Mildew is on the move

  It’s that time of year again. Cucurbit downy mildew is on the move and the extension pathologists involved in the Cucurbit Downy Mildew ipmPIPE project had our first conference call this morning. To date outbreaks of downy mildew have been reported on a variety of … Continue reading

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