3 ms·
I think you are confusing "degrade" with "run-off"; glyphosate "sticks" to soils with high organic content - presumably due to opposing electric charges. The po
by jakewins 8y ago
I think you are confusing "degrade" with "run-off"; glyphosate "sticks" to soils with high organic content - presumably due to opposing electric charges. The point of that being that it doesn't get washed into watersheds et cetera when it rains; of course, again, this only applies in high-organic-content soils.
Glyphosate degrades with a "half-life" of about 1-170 days. If you consume a product sprayed with glyphosate within about 90 days of the last spray, on average it will contain about half of the original dose.
Source: http://pmep.cce.cornell.edu/profiles/extoxnet/dienochlor-glyphosate/glyphosate-ext.html http://pmep.cce.cornell.edu/profiles/extoxnet/dienochlor-gly...
- ItsMe000001 8y agoWhat is the half-life based on? Spontaneous decomposition? Or does it depend on external factors such as exposure to sun light (certain wavelengths)? If it depends on such factors half-life is variable depending on those conditions.
- jakewins 8y agoIt seems this number is for soil decomposition from microbial action. It's stable to chemical and photo decomposition. It also seems I was wrong about half-life in plants; the half life given for some tree species is 9 days. Unsurprisingly, industry does not appear to have funded research on the half-life in corn, soy and other commonly sprayed products. http://npic.orst.edu/factsheets/archive/glyphotech.html http://npic.orst.edu/factsheets/archive/glyphotech.html