North American Fruit Explorers mailing list at ibiblio

[Trey Lewis <mlewis@pelican.state.lib.la.us>]

Thomas,

I don't know the exact half life of 2-4-D.  I know damage persisted on my
muscadine vines for over a month before it began to grow off.  As for the
later portion of your question.  I would scrap the sprayer.  Use it only
for weed killer application alone.  I really dont think there is a 100% way
to remove it from a sprayer expecially if it is a plastic one or has
plastic or rubber hoses, which most do.  Sprayers are too cheap to risk
valuable trees and vines on the chance you dont fully remove the chemical.

M. Lewis






At 03:27 PM 8/12/02 -0400, you wrote:
>Thomas Olenio wrote:
>> Hello All,
>> 
>> Does anyone know the half-life of this chemical;
>> 
>> Common name: 2,4-D
>> 
>> Chemical name: 2,4-Dichlorophenoxyacetic acid
>> 
>> (common broadleaf killer)
>> 
>> I know that in a couple of days it is reduced by half, but I have read
>> that it can persist in the soil for up to 30 days.
>> 
>> I would also like to know the best clean-up of a pressurized 2 gallon
>> sprayer contaminated with 2, 4-D.
>> 
>> Thanks,
>> Tom
>> 
>> 
>> --
>> Southwest Ontario
>> Canada Hardiness Zone 6a
>> (similar to US zone 5)
>> 
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>
>Tom:
>
>There are many, many websites devoted to 2,4-D, both pro and con.  Just 
>type 2,4-D into your search engine, and draw your own conclusions.  I 
>use this herbicide because I think it's pretty safe, and have never seen 
>any reliable, non-hysterical information to the contrary.  Sensible 
>precautions are in order as with any other agricultural chemical.
>
>As for cleaning it out of a sprayer, dishwashing liquid and water should 
>be more than adequate, although you might want to add a little 
>bicarbonate of soda, which is good at neutralizing acids.  Most 
>"accidents" with herbicides in sprayers occur when a fairly large 
>concentration of the product is left in the sprayer.   Having separate 
>sprayers for insecticides and herbicides reduces the possibility of 
>these accidents.
>
>Don Yellman, Great Falls, VA
>
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