In some information I have read, claims are made indicating that it is the soil where the Vidalia onions are grown that is responsible for the sweet mild taste. I am wondering if there is some element that can be added to soils in Missouri (in my case), or Iowa, or any other state, that would result in near duplication of the soil conditions where Vidalia onions are grown so successfully. If any list member has tried to duplicate those soil conditions, would you share your experience, and your successes, or other results? Thank you. Marguerite Ruch, on the shore of Truman Lake in Missouri