This article was posted to SANET on May 15th. Might be of interest. Allan,
Doesn't mention Poison Ivy, but I'll try it on some I have this morning.
Perry
STORY LEAD: Spray Weeds With
Vinegar?
___________________________________________
ARS News Service
Agricultural Research Service, USDA
Don Comis, (301) 504-1625, [EMAIL PROTECTED]
May 15, 2002
___________________________________________
Some home gardeners already use vinegar as a herbicide, and some garden stores sell vinegar pesticides. But no one has tested it scientifically until now.
Agricultural Research Service scientists offer the first scientific evidence that it may be a potent weedkiller that is inexpensive and environmentally safe--perfect for organic farmers.
___________________________________________
ARS News Service
Agricultural Research Service, USDA
Don Comis, (301) 504-1625, [EMAIL PROTECTED]
May 15, 2002
___________________________________________
Some home gardeners already use vinegar as a herbicide, and some garden stores sell vinegar pesticides. But no one has tested it scientifically until now.
Agricultural Research Service scientists offer the first scientific evidence that it may be a potent weedkiller that is inexpensive and environmentally safe--perfect for organic farmers.
ARS researchers Jay Radhakrishnan, John R. Teasdale and Ben Coffman in
Beltsville, Md., tested vinegar on major weeds-- common lamb's-quarters, giant
foxtail, velvetleaf, smooth pigweed and Canada thistle--in greenhouse and field
studies.
They hand-sprayed the weeds with various solutions of vinegar, uniformly
coating the leaves. The researchers found that 5- and 10-percent concentrations
killed the weeds during their first two weeks of life. Older plants required
higher concentrations of vinegar to kill them. At the higher
concentrations, vinegar had an 85- to 100-percent kill rate at all growth
stages. A bottle of household vinegar is about a 5-percent concentration.
Canada thistle, one of the most tenacious weeds in the world, proved the
most susceptible; the 5-percent concentration had a
100-percent kill rate of the perennial's Top growth. The 20-percent concentration can do this in about 2 hours.
100-percent kill rate of the perennial's Top growth. The 20-percent concentration can do this in about 2 hours.
Spot spraying of cornfields with 20 percent vinegar killed 80 to 100
percent of weeds without harming the corn, but the scientists
stress the need for more research. If the vinegar were sprayed over an entire field, it would cost about $65 per acre. If applied to local weed infestations only, such as may occur in the crop row after cultivation, it may only cost about $20 to $30.
stress the need for more research. If the vinegar were sprayed over an entire field, it would cost about $65 per acre. If applied to local weed infestations only, such as may occur in the crop row after cultivation, it may only cost about $20 to $30.
The researchers use only vinegar made from fruits or grains, to conform to
organic farming standards.
ARS is the U.S. Department of Agriculture's chief scientific research agency.
___________________________________________
* This is one of the news reports that ARS Information distributes to
subscribers on weekdays.
* Start, stop or change an e-mail subscription at
www.ars.usda.gov/is/pr/subscribe.htm
* The latest news is always at www.ars.usda.gov/is/pr/thelatest.htm
* [EMAIL PROTECTED] | www.ars.usda.gov/is | phone (301)
504-1638 |
fax (301) 504-1648
ARS is the U.S. Department of Agriculture's chief scientific research agency.
___________________________________________
* This is one of the news reports that ARS Information distributes to
subscribers on weekdays.
* Start, stop or change an e-mail subscription at
www.ars.usda.gov/is/pr/subscribe.htm
* The latest news is always at www.ars.usda.gov/is/pr/thelatest.htm
* [EMAIL PROTECTED] | www.ars.usda.gov/is | phone (301)
504-1638 |
fax (301) 504-1648
----- Original Message -----
From: "M.N." <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Saturday, June 15, 2002 2:09 AM
Subject: RoundUp
> about, called Finale. As I understand it (do more deep research on this to
> be sure) it is a chemical related to Roundup, but in a form which more
> quickly breaks down in the soil, and which does not profit Monsanto.
>
> Strength & Wisdom,
> Micah
>
>
> ----------------------------------------------------------------------------
> ----
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>
