I only have a moment to post today but wanted to put up two links concerning the research and publications of a retired Purdue University researcher. Dr. Don Huber has made a number of claims about the effects of glyphosate-resistant cropping systems on soil pathogen populations and micronutrient uptake. I have received several calls about this (particularly the micronutrient aspect) in recent months.
The first link is to a Washington Post article entitled "Researcher's warning about genetically modified crops spreads, but scientists question claims". This particular article addresses Huber's claims that Roundup Ready crops are more susceptible to certain diseases. However, the claims do not appear to be documented with any scientifically valid data or peer-reviewed publications. He research partners have also been kept anonymous. the closing quote from the Post article was from Paul Vincelli who said "I’m not saying the claims are true or false. What we need is really good science on this issue. We’re talking about extraordinary claims, and we need at least ordinary evidence in support of these claims" (my emphasis). I agree with that sentiment.
The second link I'm posting is from a blog called "BioFortified" written by grad students, professors and guest experts with the goal of fostering discussion and factual information about plant genetics and genetic engineering. This article and discussion is entitled "Does glyphosate restrict crop mineral uptake?". I haven't read through all the posting and comments yet but am impressed with the writing skill and factual information presented.
It can be difficult to sort out scientific fact from opinion (especially on the internet). Just because something is said or written about frequently it is not necessarily true in science. If other scientists cannot repeat your results or replicate it under experimental or real world situations, there may be a problem with the hypothesis.
Until I see more compelling scientific data, I have a lot of trouble seeing this as a problem under real-world field conditions considering the millions of pounds of glyphosate that have been applied in many cropping systems since the herbicide was introduced over 30 years ago.
Read on and make your own (hopefully informed) opinions.
Brad
Apr 1, 2011