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Politics : Foreign Affairs Discussion Group -- Ignore unavailable to you. Want to Upgrade?


To: thames_sider who wrote (98895)5/23/2003 12:10:43 PM
From: Hawkmoon  Read Replies (2) | Respond to of 281500
 
Then, if (for example) all US soya is immune to Round-Up, what happens if an established pest gets this immunity?

Round up? Glyphosate??

nccnsw.org.au

Microbes are primarily responsible for the breakdown of the product. The time it takes for half of the product to break down ranges from 1 to 174 days (Extoxnet, US EPA).

weeds.iastate.edu

howstuffworks.com

If you have read the HowStuffWorks article How Cells Work, you know a good bit about DNA and how it produces enzymes. In the same way that many antibiotics gum up enzyme production to kill bacteria, glyphosphate gums up enzymes in plants to kill them. Glyphosphate kills plants like antibiotics kill bacteria.

If you've been following farming news or the genetically modified food debate, you know that glyphosphate-tolerant seeds are now available -- you can buy genetically modified corn, soybeans, etc. that are immune to glyphosphate. These plants produce an enzyme that performs the same function as EPSP synthase but is not inhibited by glyphosphate.


Another interesting link:

home.howstuffworks.com

Hawk



To: thames_sider who wrote (98895)5/24/2003 2:55:10 PM
From: Noel de Leon  Respond to of 281500
 
Sent this to Hawkmoon,

Round Up has been found in ground water in Denmark, a country that depends on ground water for its supply of potable water. Equally important is that stream water on the island of Fynen contains Round Up in the winter which poses a serious question as to the validity of the explanation that Round Up in streams is caused by wind borne mechanisms.

The danish reference is:http://www.ecocouncil.dk/arkiv/2000/001226_roundup.html