Roundup-Resistant Super Weeds
May 5th, 2010The New York Times piece below states the following about glyphosate: “It kills a broad spectrum of weeds, is easy and safe to work with, and breaks down quickly, reducing its environmental impact.”
Please see: Study Released in Argentina Puts Glyphosate Under Fire:
Criticism of the soy farming model intensified recently when research released by Argentina’s top medical school showed that a leading chemical used in soy farming may be harmful to human health. The study has alarmed policymakers in the South American nation.
A study released by an Argentine scientist earlier this year reports that glyphosate, patented by Monsanto under the name “Round Up,” causes birth defects when applied in doses much lower than what is commonly used in soy fields.
The study was directed by a leading embryologist, Dr. Andres Carrasco, a professor and researcher at the University of Buenos Aires. In his office in the nation’s top medical school, Dr. Carrasco shows me the results of the study, pulling out photos of birth defects in the embryos of frog amphibians exposed to glyphosate. The frog embryos grown in petri dishes in the photos looked like something from a futuristic horror film, creatures with visible defects—one eye the size of the head, spinal cord deformations, and kidneys that are not fully developed.
Via: New York Times:
Just as the heavy use of antibiotics contributed to the rise of drug-resistant supergerms, American farmers’ near-ubiquitous use of the weedkiller Roundup has led to the rapid growth of tenacious new superweeds.
To fight them, Mr. Anderson and farmers throughout the East, Midwest and South are being forced to spray fields with more toxic herbicides, pull weeds by hand and return to more labor-intensive methods like regular plowing.
“We’re back to where we were 20 years ago,” said Mr. Anderson, who will plow about one-third of his 3,000 acres of soybean fields this spring, more than he has in years. “We’re trying to find out what works.”
Farm experts say that such efforts could lead to higher food prices, lower crop yields, rising farm costs and more pollution of land and water.
“It is the single largest threat to production agriculture that we have ever seen,” said Andrew Wargo III, the president of the Arkansas Association of Conservation Districts.
The first resistant species to pose a serious threat to agriculture was spotted in a Delaware soybean field in 2000. Since then, the problem has spread, with 10 resistant species in at least 22 states infesting millions of acres, predominantly soybeans, cotton and corn.
Research Credit: SP
