Monday, January 27, 2014

Genetic Engineering Companies Promised Reduced Pesticide Use … But GE Crops Have Led to a 25% Increase In Herbicide Use

Over the years, this biotech giant has successfully infiltrated an ever increasing number of high-level federal regulatory positions in the U.S. government; many of which are positions meant to protect your food safety...

Why Does Monsanto Always Win?  -  Mercola . com

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WashingtonsBlog

Genetic Engineering Actually INCREASES Pesticide Use, DECREASES Crop Yield, And May Be Dangerous to Your Health

One of the main selling points for genetically engineered crops is that they would use substantially less pesticides than conventional crops.
Because of that, and other, promises regarding GE crops, they have taken over much of the food crops in America. For example:
  • The USDA reports that 93% of all soy and 85% of all corn grown in the U.S. is an herbicide-resistant GE variety
  • Similarly, around 93% of all cottonseed oil and more than 90% of all canola oil produced in the U.S. is herbicide-resistant GE
However, it turns out that GE crops need a lot more herbicides than conventional ones.
Washington State University Charles Benbrook – former Executive Director of the Board on Agriculture at the National Academy of Sciences and, before that, Executive Director of the Subcommittee on Department Operations, Research, and Foreign Agriculture, U.S. House of Representatives – published a study showing:
Contrary to often-repeated claims that today’s genetically-engineered crops have, and are reducing pesticide use, the spread of glyphosate-resistant weeds in herbicide-resistant weed management systems has brought about substantial increases in the number and volume of herbicides applied. If new genetically engineered forms of corn and soybeans tolerant of 2,4-D are approved, the volume of 2,4-D sprayed [background] could drive herbicide usage upward by another approximate 50%.
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Largely because of the spread of glyphosate-resistant weeds, HR crop technology has led to a 239 million kg (527 million pound) increase in herbicide use across the three major GE-HR crops, compared to what herbicide use would likely have been in the absence of HR crops.
Washington State University explains:
Herbicide-tolerant crops worked extremely well in the first few years of use, but over-reliance led to shifts in weed communities and the emergence of resistant weeds that have, together, forced farmers to incrementally –
  • Increase herbicide application rates (especially glyphosate),
  • Spray more often, and
  • Add new herbicides that work through an alternate mode-of-action into their spray programs.
Each of these responses has, and will continue to contribute to the steady rise in the volume of herbicides applied per acre of HT corn, cotton, and soybeans.
HT crops have increased herbicide use by 527 million pounds over the 16-year period (1996-2011). The incremental increase per year has grown steadily from 1.5 million pounds in 1999, to 18 million five years later in 2003, and 79 million pounds in 2009. In 2011, about 90 million more pounds of herbicides were applied than likely in the absence of HT, or about 24% of total herbicide use on the three crops in 2011.
Today’s major GE crops have increased overall pesticide use by 404 million pounds from 1996 through 2011 (527 million pound increase in herbicides, minus the 123 million pound decrease in insecticides). Overall pesticide use in 2011 was about 20% higher on each acre planted to a GE crop, compared to pesticide use on acres not planted to GE crops.
There are now two-dozen weeds resistant to glyphosate, the major herbicide used on HT crops, and many of these are spreading rapidly. Millions of acres are infested with more than one glyphosate-resistant weed. The presence of resistant weeds drives up herbicide use by 25% to 50%, and increases farmer-weed control costs by at least as much.
The biotechnology-seed-pesticide industry’s primary response to the spread of glyphosate-resistant weeds is development of new HT varieties resistant to multiple herbicides, including 2,4-D and dicamba. These older phenoxy herbicides pose markedly greater human health and environmental risks per acre treated than glyphosate. Approval of corn tolerant of 2,4-D is pending, and could lead to an additional 50% increase in herbicide use per acre on 2,4-D HT corn.
Science Daily notes:
“Resistant weeds have become a major problem for many farmers reliant on GE crops, and they are now driving up the volume of herbicide needed each year by about 25 percent,” Benbrook said.
Forbes points out:
A new study released by Food & Water Watch yesterday finds the goal of reduced chemical use has not panned out as planned.  In fact, according to the USDA and EPA data used in the report, the quick adoption of genetically engineered crops by farmers has increased herbicide use over the past 9 years in the U.S.  The report follows on the heels of another such study  by Washington State University research professor Charles Benbrook just last year.
Both reports focus on “superweeds.” It turns out that spraying a pesticide repeatedly selects for weeds which also resist the chemical.  Ever more resistant weeds are then  bred, able to withstand increasing amounts – and often different forms – of herbicide.

GE Crops Have Reduced Crop Productivity

GE food manufacturers also promised an increase in crop productivity.  Indeed, that was a giant selling point for GE foods.
That claim has been debunked as well …
The Independent noted in 2008:
Genetic modification actually cuts the productivity of crops, an authoritative new study shows, undermining repeated claims that a switch to the controversial technology is needed to solve the growing world food crisis.
The study – carried out over the past three years at the University of Kansas in the US grain belt – has found that GM soya produces about 10 per cent less food than its conventional equivalent, contradicting assertions by advocates of the technology that it increases yields.
Professor Barney Gordon, of the university’s department of agronomy, said he started the research – reported in the journal Better Crops – because many farmers who had changed over to the GM crop had “noticed that yields are not as high as expected even under optimal conditions”. He added: “People were asking the question ‘how come I don’t get as high a yield as I used to?’”
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Read More Here


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PreventDisease.com

Counterintuitive Finding Shows Herbicide Use In Genetically Modified Crops Has Actually Increased


The promise by Monsanto and producers of genetically modified crops was that farmers could use less chemicals and produce a greater yield. That's about as true as honesty in politics. A study published this week by Washington State University research professor Charles Benbrook finds that the use of herbicides in the production of three genetically modified herbicide-tolerant crops -- cotton, soybeans and corn -- has actually increased.


This counterintuitive finding is based on an exhaustive analysis of publicly available data from the U.S. Department of Agriculture’s National Agriculture Statistics Service. Benbrook’s analysis is the first peer-reviewed, published estimate of the impacts of genetically engineered (GE) herbicide-resistant (HT) crops on pesticide use.
It is confirming earlier US government data showing that in the US, GM crops have produced an overall increase, not decrease, in pesticide use compared to conventional crops. Not only that promises of greater yields are also unfounded.
GM crops have not increased the yield potential of any commercialised crops. In fact, studies show that the most widely grown GM crop, GM soya, has suffered reduced yields.
A report that analyzed nearly two decades worth of peer reviewed research on the yield of the primary GM food/feed crops, soybeans and corn (maize), reveals that despite 20 years of research and 13 years of commercialization, genetic engineering has failed to significantly increase US crop yields. The author, former US EPA and US FDA biotech specialist Dr Gurian-Sherman, concludes that when it comes to yield, “Traditional breeding outperforms genetic engineering hands down.”
In the USDA study, which appeared in the the open-access, peer-reviewed journal “Environmental Sciences Europe,” Benbrook writes that the emergence and spread of glyphosate-resistant weeds is strongly correlated with the upward trajectory in herbicide use. Marketed as Roundup and other trade names, glyphosate is a broad-spectrum systemic herbicide used to kill weeds. Approximately 95 percent of soybean and cotton acres, and over 85 percent of corn, are planted to varieties genetically modified to be herbicide resistant.
Atrazine is the second-most widely used herbicide in the U.S. More than 75 million pounds of it are applied to corn and other crops, and it is the most commonly detected pesticide contaminant of groundwater, surface water and rain in the U.S.
Men exposed to high amounts of the substance are far more likely than men with less contact to have diluted or deformed and sluggish sperm. Each of the semen problems can reduce the ability of sperm to reach and fertilize an egg and could make conception harder.
“Resistant weeds have become a major problem for many farmers reliant on GE crops, and are now driving up the volume of herbicide needed each year by about 25 percent,” Benbrook said.
Data from the US Department of Agriculture indicate that the use of glyphosate on major crops went up by more than 15 fold between 1994 and 2005. The EPA estimated in 2000-2001 that 100 million pounds of glyphosate are used on lawns and farms every year, and over the last 13 years, it has been applied to more than a billion acres.
It did not take long for glyphosate-resistant weeds to appear, just as weeds resistant to every herbicide used in the past had appeared. The Weed Science Society of America reported nine weed species in the United States with confirmed resistance to glyphosate; among them are strains of common ragweed (Ambrosia artemisiifolia), common waterhemp (Amaranthus rudis), giant ragweed (Ambrosia trifida), hairy fleabane (Conyza bonariensis), horseweed (Conyza canadensis), Italian ryegrass (Lolium multiflorum), johnsongrass (Sorghum halepense), rigid ryegrass (Lolium rigidum), and palmer pigweed (Amaranthus palmeri).
The annual increase in the herbicides required to deal with tougher-to-control weeds on cropland planted to GE cultivars has grown from 1.5 million pounds in 1999 to about 90 million pounds in 2011.
Herbicide-tolerant crops worked extremely well in the first few years of use, Benbrook’s analysis shows, but over-reliance may have led to shifts in weed communities and the spread of resistant weeds that force farmers to increase herbicide application rates (especially glyphosate), spray more often, and add new herbicides that work through an alternate mode of action into their spray programs.
Natasha Longo has a master's degree in nutrition and is a certified fitness and nutritional counselor. She has consulted on public health policy and procurement in Canada, Australia, Spain, Ireland, England and Germany.
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