Glyphosate doesn't last in soil though, it's broken down in a few days by soil bacteria.
Which makes the practice above of spraying replanted forests so “the good trees grow faster” even more abhorrent
They replant with round-up ready pine, so they spray to kill aspen which is a firebreak species, and grow massive pine stands which are the opposite. It's the major reason for the massive forest fires we've had lately (and thus the massive flooding).
>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.[57] At a site in Texas, half-life was as little as three days. A site in Iowa had a half-life of 141.9 days
It is also a powerful chelating agent (make you lose minerals) is another concern for humans.
"Although the chelating properties are well known, this potential additional environmental risk was never adequately considered in the regulatory risk assessment (EFSA 2015a, 2015b)."
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5823954/#:~:tex....