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| Reply To: | Iowa Discussion, Alerts and Announcements |
| Date: | Mon, 21 Mar 2005 11:10:06 -0600 |
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Although there is much emotion in the agruments about gm crops, here is
a more scientific study. What doesn't compute for me in this
study--there are more weeds in the gm crops--but perhaps these weren't
Roundup gm crops ready. Lanny Schwartz
BBC NEWS
GM crop study set for publication
* The results from the last of the major farm-scale trials of GM crops
in the UK are to be published on Monday. *
Already, a GM beet and spring oilseed rape have been shown to be more
harmful to many groups of wildlife than their conventional equivalents.
A third biotech crop, a maize, was found to be kinder to other plants
and animals than a normal, non-GM plant.
The final scientific report will centre on the performance of a
winter-sown oilseed rape.
The UK Farm-Scale Evaluations (FSEs) of genetically modified (GM) plants
have been described as the biggest ecological experiment in the world
and a model for measuring the impact of new farming techniques on the
environment.
* Seeds and insects *
They were set up by the government in 1999 to help ministers decide
whether or not to allow commercialisation of engineered plants in Britain.
The FSEs, which have been conducted by independent scientists, set out
to look at a narrow set of issues related to the impact on the
environment of herbicide-tolerance - GM crops that can be sprayed with
specific weedkillers and still flourish while competing plants (weeds)
are killed off.
The scientists grew the GM plants under farm conditions side by side
with their conventional equivalents, and then observed the wildlife in
among the crops and at the field margins.
The FSEs showed that some insect groups, such as bees (in beet crops)
and butterflies (in beet and rape), were recorded more frequently in and
around the conventional crops because there were more weeds to provide
food and cover.
There were also more weed seeds in conventional beet and rape crops than
in their GM counterparts. Such seeds are important in the diets of some
animals, particularly some birds.
In contrast, growing GM maize was better for many groups of wildlife
than conventional maize. There were more weeds in and around the biotech
maize crops, more butterflies and bees around at certain times of the
year, and more weed seeds.
* Journal report *
The results for the first three crops (spring oilseed rape, beet and
maize) were published in October 2003 - the government agreeing to the
commercialisation of the maize under strict conditions.
The results from the fourth crop - winter oilseed rape - will be
announced by the project's Scientific Steering Committee (SSC) at a
meeting at the Royal Institution in London.
The results are being published in a journal of the Royal Society, the
UK's academy of science.
Bayer Cropscience, the German company behind the GM maize, decided not
to proceed with the cultivation of its product in March last year.
It said the restriction imposed by the government had made
commercialisation "economically non-viable".
Story from BBC NEWS:
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