In article , eddy
writes
Surely this would be a good way to destroy a plant that it proving
hard to get rid of.
Maybe salt ,sodium chloride is another way instead of using chemical
weed killers.
Would regular doses of salt water kill off a plant ?

Yes - this has an ancient lineage. The Romans sowed Cathaginian field
with salt (?100BC??)

There are more effective chemicals and methods.

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cbw