The addition of salt to soil kills plants. Forever.
dumb idea.
Wrong.
Drink 20 gallons of water, regular bottled water, real quick.
You’d die.
Does that make water poison?
I just did a test. I grew wheatgrass. Watered one bunch with regular fresh water, and the other bunch with seawater diluted 20 parts fresh water - 1 part sea water. They both grew about the same.
The advantage isn’t in the yields, although some say that it does improve yields, its that the plants are taking in the minerals from the seawater. You put it on grasses that animals eat, the grasses pull in the trace minerals - all of them, the animals eat the enriched grasses, and their tissues will contain those trace minerals. All grasses, grains, vegetables, will benefit from the additional trace minerals, although it appears that grasses / grains take up more of those trace minerals than most vegetables do.