Our soil pH is about 8 and the canal water is about the same. Lime will make it worse. All the garden books say to put lime on a garden and unfortunately, some people around here do it without asking what it's for.
Where I live, if you have not limed recently, your ground needs lime. It is just a matter of how much. I think the old timers used slaked lime on the cut parts because they had it around for putting in the outhouse to keep flies and such down. miles