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Author Topic:   pre-M
jane
unregistered
posted 14 April 2003 13:49           Edit/Delete Message   Reply w/Quote
Chem-lawn just sprayed my whole yard with pre-M by mistake (they were supposed to do only an organic application). I have organic veges, blueberries, grapes, apple trees and pear trees back there. Also a dog and cat, and numerous dog toys. Does anyone know if this stuff will get into fruits and veges and if it harms animals in any way? Thanks!

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seed
Editor
posted 14 April 2003 16:50     Click Here to See the Profile for seed     Edit/Delete Message   Reply w/Quote
It sounds like the Pre-M was not sprayed directly on or underneath the vegetables and fruits, therefore there is no restriction, nor do I see a reason for concern in this regard. If fruits and vegetables were sprayed directly, then they should not be eaten.

Pendimethalin is strongly adsorbed (sticks to things) to clay and organic matter. It is considered immobile, which means that it essentially won't move from where it is applied, but will break down in place. It also stains badly, which can be annoying.

Lawn areas sprayed with Pre-M have a 24-hour Restricted Entry Interval (REI) requiring the use of personal protective equipment involving any contact with the treated area. For feet, this is shoes and socks. For hands, this is chemical resistant gloves. For pets, I have no idea.

I think you can talk to Chem-lawn and they will tell you what is safe for reentry of pets. In my opinion, the MINIMUM would have to be the same for barefoot humans, 24 hours. If any dog toys were sprayed with chemical, I urge that they be replaced.

This information is based on and is consistent with the EPA-approved Lesco label for Pre-M 3.3 EC Turf Herbicide, as well as the BASF label for the herbicide Prowl, which has the same active ingredient pendimethalin, but is formulated for selected in-ground vegetables such as potatoes and peanuts, and nonbearing fruit trees. There is no label that I am aware of covering the use of the active ingredient pendimethalin on leafy vegetables or bearing fruit trees, or on grass that might be eaten by pets, should these be issues for you.

Pendimethalin has a low acute toxicity to mammals, the LD50 (50% lethal dose) being 4000 mg/kg or more. While all chemicals can injure people or animals, in sufficient quantity, for pendimethalin one would have to consume a large quantity to risk serious acute harm. I am aware of no reported carcinogenicity and no mutagenicity associated with pendimethalin.

I hope this helps,

Phil

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ted
unregistered
posted 17 April 2003 16:48           Edit/Delete Message   Reply w/Quote
Not to stir the pot any more, but i'm sure they didn't just spray pre-em! there will be other components to their spray, i assure you. You're probably ok, particularly on the fruit tree issue. Did you follow their instructions on the paper work left at the house? did they place a posting sign in the lawn? an organic application would mostly certainly have been a granular application, without any herbicides, so there's no mistaking the two. IF the lawn was dry when the pets were let out , when the product label and the research says you're ok. I wouldn't want a pet out on any lawn care ap, organic or regular, however. Basically, even though they screwed up, if you followed their instructions regarding the application, you should be ok

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sward
unregistered
posted 24 February 2005 13:13           Edit/Delete Message   Reply w/Quote
I was exposed to this poison two years ago and I have never been the same. They say it is safe but that is bull. I am suffering from symptoms similar to MS. I was perfectly healthy and then within minutes of exposure, foaming at the mouth and I was falling over and have been ill since.

quote:
Originally posted by jane:
Chem-lawn just sprayed my whole yard with pre-M by mistake (they were supposed to do only an organic application). I have organic veges, blueberries, grapes, apple trees and pear trees back there. Also a dog and cat, and numerous dog toys. Does anyone know if this stuff will get into fruits and veges and if it harms animals in any way? Thanks!

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ted
unregistered
posted 25 February 2005 10:21           Edit/Delete Message   Reply w/Quote
i'm still concerned about the issue of having a reaction to the pre-em. were you exposed only to the pre-em or are you referring to a lawn care application? what pre-em was it? there's a lot of different chemicals in a typical lawn care application, and just picking one out may lead to an incorrect diagnosis. I know there are folks out there with mcsd, and i sympathize with your concerns.

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guest
unregistered
posted 28 February 2005 13:38           Edit/Delete Message   Reply w/Quote
Why would an organic lawn use Chem Lawn?

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turfman
Friend
posted 09 March 2005 07:46     Click Here to See the Profile for turfman     Edit/Delete Message   Reply w/Quote
dont wanna bust your bubble but prolonged exposure to the chemicals in the pre-emergent
causes some liver difuntions and cause jaundis.
I would cancel chemlawn and get an innoculant to boost your plants and lanwns potiential. as for the pets. keep em off that stuff till it rains.

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