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market-farming - Re: [Market-farming] Fwd: tomato late blight detected in our area

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  • From: Bill Shoemaker <wshoemak AT illinois.edu>
  • To: "Market Farming" <market-farming AT lists.ibiblio.org>
  • Subject: Re: [Market-farming] Fwd: tomato late blight detected in our area
  • Date: Thu, 17 Sep 2009 08:33:16 -0500 (CDT)

Its not really a soil-borne disease, but it probably would help to dispose of
tomato AND potato plant residue at the end of the season. Burning it would be
a favorable option. But recognize that the organism which causes the disease
probably can't be eradicated. That doesn't mean you are at a much higher risk
next year though. Like other organisms, disease organisms need favorable
conditions to create the disease on their target crop(s). That is why this
year was so bad for late blight. We had it in northern Illinois too because
the weather was so wet and cool, most of the season. I hadn't seen the
disease in years. Prevailing conditions were the reason it erupted like it
did. Chances are very good that we will not have that problem next year. I'm
sure we'll have other ones! But, because the organism had a chance to build
its populations, it may present a slightly higher risk next year, but only if
conditions favor it like they did this year.
Bottom line in this business is to know your risks as well as possible and
expect the unexpected. And you're right, rotate as much as possible.

Bill


>
> I have it here bad in Northeast Ohio, so what do I
> do for next year? Won't the soil be screwed now to
> replant in next season? I have a small garden, only
> 1/4 of an acre....rotation is really hard to do
> since I grow peppers and potatoes along with 400
> tomatoes, plus other veggies.
>
>
>
> Courtney
>
> Herb Thyme
>
> Middlefield, Oh
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>
William H Shoemaker, UI-Crop Sciences
Sr Research Specialist, Food Crops
St Charles Horticulture Research Center
535 Randall Road St Charles, IL 60174
630-584-7254; FAX-584-4610




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