Hello, The problem is interesting. Not going into the details I like to remark: Many possible solutions as in 2 links below. First thing which occurs to mind is a cylic crop which obsorbs salts to keep the salt % under check. Secondly, Use of salt desolving or converting media mixed with the fertilisers. ... Does Salt tolerance mean gentically modified? What happens to a salt tolerant plant in a salt free soil? Is it true? A lemon tree yields sour lemons once planted in any type of soil. If so, how? Best wishes RaoSN http://www.ehow.com/list_6366356_plants-absorb-salt-water.html http://www.associatedcontent.com/article/2540123/plants_that_tolerate_sa...