Dear Jack
If you experience is that gene flow is "within expectations" please could you tell me what your expectations are. How far beyond your own land do you expect GM genes to spread? 100yards? half a mile? Of course the number of plants will decrease dramatically with distance but I will keep quoting a figure of one plant every two square yards at 400 yards as measured in Canada until you can give me a better estimate based on measurements taken here.
Sorry I can not get the weblink to work anymore either (perhaps because it was confidential!) but I paste a summery below.
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The US is being hit by Roundup Ready resistant weeds and an independent
market research study, which has been discreetly circulating, says Roundup Ready resistance is set to hit the economic value of farmland wiping around 17% off US land rentals. What's more, 46% of the farm managers surveyed in the study said weed resistance to glyphosate, the active ingredient in Monsanto's herbicide Roundup, is now their top weed-resistance concern.
The report warns, "Suddenly, glyphosate-resistant weeds have become more
than an in-season production and profitability issue. They can also
affect the long-term value of farmland". It also says, "These survey
findings should make both farm managers and landowners take notice"
because "The economic consequences are significant" and can represent
for landowners "a major loss of cash flow".
Glyphosate is being massively used in North America thanks to Monsanto's
GM herbicide-resistant 'Roundup Ready' crops. But there is growing
concern among weed scientists and land owners about the emergence of
glyphosate-resistance. As the report notes, "The high volume of
glyphosate being used across the country as a result of RR technology
adoption makes this a very real concern for growers, professional farm
managers and the owners of farmland."
Glyphosate-resistant marestail has already been found in Delaware,
Tennessee, Kentucky, Indiana and Ohio. Marestail (horseweed) is a
prolific seed producer and the seeds are easily blown around by the wind
so this is a major problem. But the problem doesn't stop there.
Glyphosate-resistant rigid ryegrass has been reported in California.
Weed scientists in Iowa and Missouri are already testing waterhemp from
fields that seem to be showing more tolerance to glyphosate. There are
also complaints about marginal control of velvetleaf, ivyleaf
morningglory and lambsquarters control with glyphosate.
The latest bad news for Monsanto, which has always promoted Roundup as a
way of simplifying farm management issues, comes courtesy of its main
rival, the world's largest biotech company, Syngenta, which commissioned
the market research study report and has been quietly circulating it to
farmers and landowners via its PR company, Gibbs & Soell.
Syngenta hopes to profit from the wave of concern over Roundup
resistance as people rush to use extra chemicals, and crop rotations not
involving RR crops, to try and head off the build up of glyphosate
resistance on their land.
But American famers using Roundup Ready crops could be headed up a
cul-de-sac.
According to weed scientists, such as Iowa State University's Mike Owen,
it's doubtful whether this kind of resistance management will be viewed
as economically feasable at elast in the short term. As Owen told a
packed-out meeting of North Central Weed Science Society in St. Louis
recently, he expects growers to try and carry on using glyphosate in the
same way to try and avoid the extra expense of other chemicals until
they are finally forced by resistance to switch to something else. But
an article reporting on the Weed Science Society meeting concludes,
"With few, if any, new blockbuster chemicals in the pipeline, the
question may become whether there will be alternative programs to switch
to if glyphosate loses its effectiveness." [see "Glyphosate resistance
dominates weed science meetings", Mike Holmberg, Farm Chemicals Editor,
Successful Farming December 6, 2002,
http://www.biotech-info.net/dominating.html]
Among the CONCLUSIONS in the Syngenta report:
*Specific weed resistance can reduce a farm's rentable value by 17 percent
*The greatest weed-resistance concern is glyphosate tolerance in RR crops
*More than half of farm managers placed it ahead of their concerns about
weed resistance to atrazine, Pursuit, ALS herbicides or propanil
*Almost two-thirds (63 percent) of these professional farm managers
expect the importance of glyphosate tolerance to increase in the future
when determining rental values and land appraisals. "Given the
increasing adoption of RR technology in corn,soybeans and cotton,these
professional farm managers and rural appraisers felt the importance of
glyphosate-resistant weeds will increase in the future.Overall, 63
percent said it will become a bigger problem."
*Almost half (47 percent)now require practices to manage weed
resistance... This is expected to grow to 54 percent in the future
*Seventy percent said the use of weed resistance-management practices
already influence their tenant selection.
The report also looks at western Australia, where weed resistance to
herbicides is becoming a big problem for land productivity.
e-mail your request for a copy of the report to Jennifer McManus of
Gibbs & Soell at <mailto:jmcmanus@gibbs-soell.com>