[MAIPC] Glyphosate a carcinogen?

Sat Aug 15 11:21:04 PDT 2015

A couple of people have posted that glyphosate causes cancer.  This apparently really has not been shown.

Here is a reasonable article on the subject concerning whether glyphosate may cause cancer.  http://www.newyorker.com/news/daily-comment/roundup-and-risk-assessment

It seems to me more relevant to know that in vitro studies show very low toxicity than to know that agricultural workers who spray glyphosate (and many other more toxic chemicals) can have increased cancer risk.  

The review “Environmental Fate of Glyphosate” from the California Department of Pesticide Regulation mentioned by Jon Robinson is excellent, and here is the link again.  http://www.cdpr.ca.gov/docs/emon/pubs/fatememo/glyphos.pdf  

It is interesting to know that formaldehyde is one of the end products of microbial degradation and that glyphosate is moderately persistent in soil.  High formaldehyde exposure may increase cancer risk, but it is rapidly broken down in air and water according to http://www.cancer.org/cancer/cancercauses/othercarcinogens/intheworkplace/formaldehyde.  But it is always good to avoid chemical exposure.

John Ambler

From: MAIPC [mailto:maipc-bounces at lists.maipc.org] On Behalf Of Stephen L. Young
Sent: Saturday, August 15, 2015 9:58 AM
To: MD-CONS-COMM at LISTS.SIERRACLUB.ORG; maipc at lists.maipc.org
Subject: Re: [MAIPC] Kudzu

Here is the latest:

http://www.reuters.com/article/2015/07/14/us-monsanto-herbicide-idUSKCN0PO2FM20150714

Steve

From: MAIPC <maipc-bounces at lists.maipc.org> on behalf of Marc Imlay <ialm at erols.com>
Date: Saturday, August 15, 2015 at 6:55 AM
To: "MD-CONS-COMM at LISTS.SIERRACLUB.ORG" <MD-CONS-COMM at LISTS.SIERRACLUB.ORG>, "maipc at lists.maipc.org" <maipc at lists.maipc.org>
Subject: Re: [MAIPC] Kudzu

The carcinogenic properties of glyphosate went thru extensive reviews and appears to be relatively, low, especially at the low rates we apply it to control invasives. Does anyone have an updated review.

Marc

From: MD Cons Committee [mailto:MD-CONS-COMM at LISTS.SIERRACLUB.ORG] On Behalf Of Jon W. Robinson
Sent: Friday, August 14, 2015 2:10 PM
To: MD-CONS-COMM at LISTS.SIERRACLUB.ORG
Subject: Re: Kudzu

Yes,

   Roundup has been found to be a carcinogen. I would hope anyone using it would take appropriate precautions.

Jon Robinson

301-648-7141

On Aug 14, 2015, at 11:46 AM, Linda Silversmith <linsil at VERIZON.NET> wrote:

 PS - just Google "how to kill kudzu" - one way apparently is to keep removing the vegetative parts and eventually the core dies too...but you can probably spend a whole day just reading the hits that come up.

On 08/14/15, linsil at verizon.net wrote:

 but don't forget that Roundup has now been shown to be carcinogenic.

Linda

On 08/14/15, Jon W. Robinson<jonwrobinson at VERIZON.NET> wrote:

Greg, 
Here is information on Roundup. http://www.cdpr.ca.gov/docs/emon/pubs/fatememo/glyphos.pdf

I think judicious use of Roundup would have minimal impact. I use it to control poison ivy, and some other hard to control vines. I still pull my English Ivy by hand.��

Jon Robinson
301-648-7141

> On Aug 13, 2015, at 9:38 PM, Greg Smith <gpsmith at IGC.ORG> wrote:
> 
> Friends and neighbors,
> 
> My friend's backyard has been hit hard by kudzu, and so has her neighbors'. Other invasives, including porcelain berry, are in the mix, too, but the kudzu dominates in this case.
> 
> While the kudzu hasn't attacked the trees in my friend's yard, it has begun to carpet the trees in her neighbors'.
> 
> I've been ripping and pulling, but I know I'm not getting the root system.
> 
> I'm loathe to use Round Up or other toxic commercial herbicides.
> 
> If you have any suggestions for non-toxic or least-toxic ways to knock back and control kudzu, please share.
> 
> 
> Many thanks,
> 
> Greg
> 
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