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13 years ago
Cheers
I am interested in the information you posted but I can't get the link to work. Is there another link??
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Late blight confirmed on Long Island Mon 21 Jun 2010 Jessica Damiano Multiple Page View Apparently, lightning can strike twice: A case of late blight, the rare plague that devastated tomato and potato crops across Long Island last year, was found in a community garden in Setauket on Thursday. Meg McGrath, a plant pathologist at Cornell University?s Long Island Horticulture Research and Extension Center in Riverhead, personally confirmed the disease on Saturday.
Late blight is caused by a fungus-like pathogen that thrives on moisture. Last year's epidemic was created when the pathogen went crazy, fueled by excessive spring rains and cool temperatures. Here's how it works: An infected plant can release up to a million spores a day. Those spores hang overhead, and when it rains, they are spread all over the region with the precipitation. This is not just a concern to your garden or your neighborhood. Theoretically, your one infected plant in, say, Floral Park, could wipe out a farm in Riverhead. It's that serious.
?Anyone growing susceptible plants needs to take responsibility to ensure they don?t become a ?Typhoid Mary,?? McGrath said. ?We need to treat this like a community disease,? she adds. ?If infested, even a small garden can have a devastating impact on other plantings.?
The Setauket plants are being disposed of, McGrath told me, "but I'm concerned that conditions were likely also favorable in other gardens, so wherever the pathogen is present, late blight is probably now occurring," she said.
This isn't good, but because McGrath gave me an immediate heads-up, we can keep on top of this thing so it doesn't spread and devastate gardens and farms all over the region. Right now, go outside and check your tomato and potato plants. Inspect them thoroughly. Look for elongated dark lesions on stems or wet-looking grayish blotches on leaves.
There is no silver bullet, unfortunately, but there are some steps you should take if you suspect late blight on plants growing in your garden. First, bring the plant or affected plant part to the Suffolk County Cornell Cooperative Extension office at 423 Griffing Ave., Riverhead, for diagnosis. (call 631-727-4126 for help). If you are unable to deliver your sample, you can send it to the Riverhead office via overnight mail or FedEx, or, as a last resort, email a high-quality digital photo to be used as a first step in the diagnosis. Take photos using the macro setting on your camera (to achieve the best focus) and email to snipped-for-privacy@cornell.edu , with "LATE BLIGHT DIAGNOSIS REQUESTED" in the subject line IN ALL CAPS.
If late blight is present in your garden, remove the plant, roots and all, before the next rain to minimize the chances it will spread to other gardens and farms. Immediately bag the plant tightly in plastic and set in the sun for a few days until the plant dies off completely. Then dispose of in the trash. Do not compost. Do not leave it lying on the ground for later.
If you're not sure -- and chances are you won't be unless you get a professional diagnosis -- place suspect leaves in a sealed zipper-top plastic bag overnight. Late blight spores will develop into a fuzzy mass on the underside of the affected foliage.
Here are 10 things McGrath recommends you do to minimize late blight in your garden.
The video at the bottom of this page is from last year's outbreak.
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