"No products containing 2,4-Dinitrophenol are currently registered as
pesticides with the US Environmental Protection Agency. 13 products
have been registered in the past. No products have been registered
in California since 1991. No products containing 2,4-Dinitrophenol
appear to have been registered under the trade name Chemox PE. Four
Chemox PE products were previously registered in the U. S.; they
contained various salts of BUTYL-4,6-DINITROPHENOL, also known as
Well, on another discussion list, someone offered this unnerving advice
recently (Cathy, glad your comment on the relationship between product
registration and this assertion that the product is on the shelves) to a guy
who wanted to get rid of clover in a lawn:
"This is an easy one [someone wrote], 2,4-D is the thing you need. It can
be found in most
over the counter weed killers and will do a nice job on clover and all it's
cousins along with most broad-leaf weeds. Ortho brand Weed-B-Gone uses
this as the main ingredient. Shop around and watch the % of active
ingredient to determine the best buy for the money. If you have a small
in-town lawn, a quart of the Ortho product may do the job, however, it is
at a low enough concentration to POSSIBLY require more than one application
or strengthening the mix. I buy my 2,4-D from Cenex Agronomy centers and
it comes in 48% for the Amine solution. Mixed according to the label, the
spray is much more concentrated than that from the Ortho (home use) mix.
That is why it is more effective.
[hey. I'm continuing quoting here, this is not my view]
"Having said this, it is extreamly important that you know what you are
doing when spraying herbicides. Properly used, chemicals are benificial
and not harmfull to the environment in any way. Misused, and they make a
mess. This is true for any chemical, if you don't believe me, pour a cup
of table salt on the lawn in one spot and see what happens. If you can,
try to find someone to demonstrate the proper way to mix, and apply 2,4-D.
If this is not possible, mix a small batch in a spray bottle (one you are
willing to not ever use for anything but herbicides) and do some small test
spots to see how it works. If you use a strong enough mix, a light misting
is all that is needed, do not spray enough to cause the mix to run off the
clover and drip on the ground (this is just wasteful of the mix and your
money). You should see results in 24 hours and dead clover in a few days.
Give it a couple of weeks and re-apply to any missed areas.
This guy added adding a p.s. to his message: "(I just mounted a 25 gal
sprayer on a homemade trailer to pull behind my
tractor to spray weeds on 3.5 acres)"
In replying to this, at some length, incurring some red necked wrath, I
included the following:
"and another bit from http://www.ncf.carleton.ca/cancer/24d.txt
[quoting the formal Product Infromation Sheet, which manufacturers are
obliged to issue for all chemical products]
...CHRONIC (LONG-TERM) ECOLOGICAL EFFECTS
Chronic toxic effects may include shortened lifespan,
reproductive problems, lower fertility, and changes in
appearance or behavior. Chronic effects can be seen long after
first exposure(s) to a toxic chemical.
2,4-D has moderate chronic toxicity to aquatic life.
Insufficient data are available to evaluate or predict the long-
term effects of 2,4-D to plants, birds, or land animals. WATER SOLUBILITY
2,4-D is highly soluble in water. Concentrations of 1,000
milligrams and more will mix with a liter of water.
DISTRIBUTION AND PERSISTENCE IN THE ENVIRONMENT
2,4-D is moderately persistent in water, with a half-life of
between 20 to 200 days. The half-life of a pollutant is the amount
of time it takes for one-half of the chemical to be degraded.
About 91.7% of 2,4-D will eventually end up in water; about 3.3%
will end up in aquatic sediments; about 3.5% will end up in
terrestrial soil; and the rest will end up in the air.
BIOACCUMULATION IN AQUATIC ORGANISMS
Some substances increase in concentration, or bioaccumulate, in
living organisms as they breathe contaminated air, drink
contaminated water, or eat contaminated food. These
chemicals can become concentrated in the tissues and internal
organs of animals and humans.
The concentration of 2,4-D found in fish tissues is expected to be
much higher than the average concentration of 2,4-D in the water
from which the fish was taken. ...."
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