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Herbicides remaining in soil [gardening]

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Hello all.

Commercial poison products I do not use to kill weeds are supposed to fade their action in days/weeks/months  ¿?

I do the guess that has always worked.  Gasoline.  -Spank me later-  A few drops on the weeds and in hours they are dead.  On a guess number too, I believe > 99.5% of it evaporates in minutes, leaving very little on the soil (if the weed transfers it to the soil)

Whatever is left in soil; what is it and how long would it remain,  with what counterproductive effects ?  

Lately am using salt water, also vinegar,  potassium chloride? ice melt solution along fences. 

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https://www.agilent.com/cs/library/applications/5991-4191EN.pdf
 

https://pdf.sciencedirectassets.com/278653/1-s2.0-S1877705813X00037/1-s2.0-S1877705813002452/main.pdf?X-Amz-Security-Token=IQoJb3JpZ2luX2VjENz%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCXVzLWVhc3QtMSJGMEQCIEIlWT3IeFVnV6sgQqQ37xtiRmgN72R5JT20FzEHTpM9AiBInn9bsaSkYiO%2FEz7w7Jpstn6DtMBExrf0cEzT9qSicCq9Awj0%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F8BEAMaDDA1OTAwMzU0Njg2NSIM09o9DOnzDe6aG4OcKpEDTOHASYQU8vdy%2BqfHkk5T4%2BN9uY8vf70Li9%2B0CP6uyMHDKwkj4XDjiO4VIY%2FwS6YqWXl%2BQh2ZcH4ofMzuZcI2C5GCswVz9W1fxup8REnxRvNdTtwwapNzFpiwn55eRqFH0nNHB3O0YZqj3Y%2FvTM0wHqY2FOJBYogKOGwcDbL1e%2FbwaQg3XFpt8oRXRpDDepBcAZFTJq5ran%2Bk%2Fei7VGbY3rweIF0OfGfkI%2F7umChLAy21LdxzXXdim75UKLqZnaDlqMTIRaTxaNDW7%2FKcwS6Rw40D1KiGDH8eNBFNzZdzjy9cu8rEEIq4wb5YdMIKaZl0lpQXSn179mvydlyKHpeMPYFZb7b%2Bkg7%2FCtkDGCoHFkB23dH%2BUyDDdomW8ncyLUT8vzDmz4JwAubNoQlCqfFjJISj9DEVbF0K6lU%2FT%2FA2qO8E7xg2iSZjdmGX9byhOEHdVVSOieJpcw3dNtG6GUOg5sw7zXNQVPrx0XgTUey4HzhOt42%2FHDVotXRkwN011YeqKGWL97R8QXfFHxMTG4VNT40wpsny9AU67AH%2FYxVM6WUIEk5Bn2NawP0lczwS%2BZNlCCuC5W0ymi87cPj4hKXr2HcdvwEJvKBMHvg2Q5Wjtu%2BTqj9qzaUWqilYNuSyZ4abtaQpJv485HywV9xLsO3CO11a%2BtBXTh17p51L1krdJKoIw0V24GdxqdBqBDTt8lg0lX5QL9ZzIL1TEPrKMpU%2FAFXoX1k2I1us8hbmOT9ZVbgsEtU5faPHYgdqjWdLZM6Ts%2FIuSTVHE4JHIdK3mmf2G%2Ftd3nPKNvk9fPSmOf%2FAw6qIymX2NSuUKlsoHJhDXkHBPwcsfBrjBOdoSfIdF%2FwyGK6V9G59Rw%3D%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Date=20200419T203542Z&X-Amz-SignedHeaders=host&X-Amz-Expires=300&X-Amz-Credential=ASIAQ3PHCVTYTAE5DEQW%2F20200419%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Signature=06317f241a6551ef78f57849f6e28d5d9daef449af141a2451645456096c24b1&hash=de924d0b0578748b83ed7239617fe009c19be7d9faf8c58eb14a045e5d7870fc&host=68042c943591013ac2b2430a89b270f6af2c76d8dfd086a07176afe7c76c2c61&pii=S1877705813002452&tid=spdf-c096a25e-9af3-4b98-9148-5b2d505a7ec9&sid=a138e96326cc704c853a74b04a89830300cbgxrqb&type=client

 

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+1 for longest link I've ever seen.

I should stay in more. 😀

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Excellent study, thanks !  Not much benzenes found after 4 days and little others after 7 days.

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