Where can I find info. on continuous process of BD and its advantages over the
batch process?
- Original Message -
From: Keith Addison
To: biofuel@yahoogroups.com
Sent: Monday, May 27, 2002 10:45 AM
Subject: [biofuel] Re: Fwd: Spray Weeds With Vinegar?
What is the rate per acre of vinegar? How many gallons of 10-15%
should be used if it is to replace roundup? Does anyone know?
figuring that glacial acetic acid is 57% and it can be purchased in
55 gal drums and diluted down to 10-15% easily, the only thing I
need to know now is what rate.
thanks,
JEFF
Contact the ARS researchers and ask them Jeff, I think they're very
approachable. Contact details in my original post. Please let us know
what you find out.
Best
Keith
snip
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.
snip
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