Re: Planting around old trees after glyphosate

**"* F* L* J* <l*@bellsouth.net>**

On 7/7/2011 2:28 PM, Edibleflowers1@aol.com wrote:
> Round up is a short term, non selective herbicide. It is out of  the soil
> is 10-14 days.

On 7/7/2011 2:35 PM, Hamptongar@aol.com wrote:
 > It's my understanding that glyphosphate becomes completely inert in
 > organic soils in about two weeks.  In sandy or clay soils that may
 > be different.
 > There was a practice of using Roundup to kill an old lawn if it  was
 > going to be completely renovated.  The routine was to apply the
 > Roundup then wait two weeks before tilling or seeding.

-------- Original Message --------
Subject: [SANET-MG] alternatives to roundup
Date: Tue, 19 Jul 2011 14:57:59 -1000
From: Hector Valenzuela <hectoruh11@GMAIL.COM>
To: SANET-MG@LISTS.IFAS.UFL.EDU

For a link to a google document that highlights potential health effects
from exposure to roundup go to:

https://docs.google.com/document/d/1FpOjzD_5UoPM9-ozbY8IyxGAQQkBTM8LEFzx4KZijng/edit?hl=en_US&pli=1

Separately, Green Peace/GM Freeze has just come up with another important
report on both the health and environmental impacts from Roundup.
This new pub is available at:
http://www.gmfreeze.org/publications/briefings/114/

<>

https://docs.google.com/document/d/1FpOjzD_5UoPM9-ozbY8IyxGAQQkBTM8LEFzx4KZijng/edit?hl=en_US&pli=1

23.0. Roundup remains biologically active in the soil

“Incorrect claim about biological availability of glyphosate
The UK Pesticides Safety Directorate (PSD) notes that the issue of a 
waiting period between glyphosate spraying and re-entry into fields in 
order to protect humans, livestock, and plants, is not properly dealt 
with in Germany’s DAR. However, the PSD immediately dismisses this concern:
This should not be an issue for glyphosate as it is not usually 
biologically available once it contacts soil.349
But this claim was not true even at the time of the DAR. A 1983 study 
showed that glyphosate persists in sandy loam soil and is not 
inactivated in the 120 days prior to planting. Plants growing in the 
glyphosate-treated soil showed decreased nitrogen fixation, root nodule 
numbers and root weights – indicating that glyphosate was biologically 
available and toxic to plants 120 days after application.350
A new risk assessment should address the issue of the re-entry period.”

References cited:
349. EU Commission. 1999. Glyphosate: Comments from Pesticides Safety 
Directorate, York, UK, on the EC Monograph – ECCO 76. March 4. In: 
Glyphosate DAR, released by German government agency BVL on CD, 
FullReport_Glyphosat_04.pdf: p. 39 of the pdf.
350. Eberbach, P. L., Douglas, L. A. 1983. Persistence of glyphosate in 
a sandy loam. Soil Biology and Biochemistry 15(4): 485–487.

“Incorrect claim about biological activity of AMPA
Monsanto says AMPA’s long persistence in soil is of no “regulatory 
concern” because “AMPA is biologically inactive”.351 But a 2004 study 
showed that AMPA causes injury to glyphosate-tolerant and 
non-glyphosate-tolerant soybeans. Findings are the same when the AMPA is 
deliberately applied and when it forms from the breakdown of applied 
glyphosate. The study concludes that soybean injury to 
glyphosate-tolerant soybeans from glyphosate is due to AMPA formed from 
glyphosate degradation.352 Therefore AMPA is biologically active.
It is clear that the documents on which the existing approval of 
glyphosate is based are out of date and out of touch with current 
scientific knowledge and farmer experience.”

References cited:
351. EU Commission. 1999. Monsanto/Cheminova comments to Monograph 
(dated 11 Dec 1998). Feb 11. In: Glyphosate DAR, released by German 
government agency BVL on CD, FullReport_Glyphosat_04.pdf: p. 52 of the pdf.
352. Reddy, K. N., Rimando, A. M. et al. 2004. Aminomethylphosphonic 
acid, a metabolite of glyphosate, causes injury in glyphosate-treated, 
glyphosate-resistant soybean. J Agric Food Chem 52(16): 5139–5143.
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