Re Round-up

---

• Subject: [GWL]: Re Round-up
• From: JEFF LOWENFELS JEFF@GARDENER.COM>
• Date: Sat, 30 Mar 2002 00:02:13 -0800
• Importance: Normal
• List-archive: <http://topica.com/lists/Gardenwriters/read>

Here is a question posed to Dr. Elaine Ingham regarding Round-up
decomposition and her answer. She is, for the uninitiated, the goddess of
the soil food web as expert as they come when it involves microbes, fungus
and soil and interactions. A real scientist. Interesting answer:

Cheers,

Jeff L

Q-3.)
I am interested in the Roundup controversy, specifically, how long Roundup
resides in the soil, and what its impact is on the soil food web. Have you
got test results from various applications strategies, in various soils?
Also, are the tests run with Roundup as formulated (including the inert
ingredients) or just on glyphosate itself. Is this a relatively "safe"
chemical in your opinion?

Thanks,
Diane Kenworthy


ANSWER-3)
Hi Diane -

We have data on Round-up effects, but I have not published them. Generally,
if the foodweb is healthy, round-up is used as a bacterial food resource, so
bacteria increase while fungi decrease as a result of competition with the
bacteria for N, P, S, etc.

The effect is with Round-up - the combination of glyphosate and the carrier.
We have not tested glyphosate alone.

If the foodweb is not healthy, then we see longer term effects on other
organisms, such as protozoa, nematodes and arthropods. I expect that
round-up is not decomposing in these situations and the possibility for
plant uptake would be significant.

Hope this helps -
Elaine Ingham




______________________________________________
PLANT A ROW FOR THE HUNGRY: Through PAR, over 3 million pounds of food have
been donated by home gardeners like you to feed the hungry. Ask me how you
can join the effort.

============================================================
Introducing the profoundly improved Adobe InDesign
software.  Directly import native Photoshop and Illustrator
files. Download your 30-day FREE trial today! 
http://click.topica.com/caaajwRbUrGSSbVSZwBf/AdobeInDesign
============================================================

GWL has searchable archives at: 
http://www.hort.net/lists/gardenwriters/
If you have photos for GWL, send them to gwlphotos@hort.net and they will show up at  http://www.hort.net/lists/gwlphotos/ 
**************************************************

==^================================================================
This email was sent to: topica.com@spamfodder.com

EASY UNSUBSCRIBE click here: http://topica.com/u/?bUrGSS.bVSZwB
Or send an email to: Gardenwriters-unsubscribe@topica.com

T O P I C A -- Register now to manage your mail!
http://www.topica.com/partner/tag02/register
==^================================================================

• Prev by Date: Re: Ready for drugs
• Next by Date: Proven Winners
• Previous by thread: new USDA policy
• Next by thread: Re: Re Round-up