Quote:
Originally Posted by bobabode
"The half-life of glyphosate in soil ranges between 2 and 197 days; a typical field half-life of 47 days has been suggested. Soil and climate conditions affect glyphosate's persistence in soil. The median half-life of glyphosate in water varies from a few to 91 days."
http://en.wikipedia.org/wiki/Glyphosate
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OK. Half-life being what it is, if we take the high end of that range, we've got something between 1/32 and 1/64 of the glyphosate left after three years. Such fractions might be nothing, or dangerous. Depends on how much there was to begin with, and how toxic the stuff is.
The dose makes the poison.