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Weed control, management, ecology, and minutia
by J Bern Hunt
on September 29, 2014 at 1:24 PM
This article needs to be updated. The information about glyphosate having little or no residual activity in the soil is proving incorrect. Now, soil scientists are seeing reduced micronutrient levels because the glyphosate is acting as a chelate, bad bacteria is on the rise, and the list goes on. There is new info out there... check out some of the studies that have done by the USDA.  
Thanks, J
by Brad Hanson
on September 29, 2014 at 2:13 PM
Hi J,  
I appreciate your comments but I think you may have misunderstood this post as there was no reference to glyphosate having residual activity in the soil although it did make a comparison to that herbicide compared to some "natural" products. Regarding the issues you raise about residual activity, micronutrient chelation, and bacteria on the rise, I have seen very little compelling scientific evidence to support those claims. What I have seen is generally not backed by peer-reviewed science, has not been reliably repeatable in subsequent research, or occurs in such specific conditions as to be an anomaly rather than representative of the whole.
by Al Hoove
on June 4, 2015 at 12:52 PM
J Bern Hunt: residual activity in the soil vis a vis herbicides refers to pre-emergence herbicidal activity. Glyphosate has no pre-emergence herbicidal activity.
by Denise Lawungkurr Goodfellow
on May 10, 2016 at 11:30 PM
For some years I've been using household vinegar (5%) on a range of transformer weeds and it's killed each and every one.
by Bob Randall, Ph.D.
on May 25, 2016 at 3:01 PM
Glyphosate, the active ingredient of the herbicide RoundUp is patented as an antiparasitic agent and non selective antibiotic Glyphosate kills bacteria at 1 ppm. It was patented by Stauffer Chemical in 1964 as a metal chelator for pipe cleaning (U.S. Patent 3,160,632 Stauffer Chemicals 1964). It kills plants and bacteria by chelating metal . Although apparently non-toxic to mammals, it is a potent intestinal micro-biome disrupter so could if consumed even in small amounts have grave health implications to the extent the microbiome is important. See the review about the microbiome & health in Scientific American  
Given that, it shouldn't be used where it might get onto the edible portion of a food plant.
by David Kucher
on October 19, 2016 at 5:50 AM
Given that Vinegar is an antibiotic, a metal chelator and also a very effective pipe cleaning agent, should we not view it with the same irrational fear as glyphosate?
by Christine McIntyre
on April 12, 2017 at 7:39 PM
Some here would do well to familiarize themselves with the work on glyphosate of Dr. Stephanie Seneff, Senior Research Scientist at MIT.  
-edited to remove hyperlink  
-Editors note: Dr. Seneff's training includes a BS in Biophysics, an MS and EE in Electrical Engineering, and a PhD in Electrical Engineering and Computer Science. In recent years, she has coauthored a number of papers exploring links between glyphosate and human health problems.
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