here are three methods that can be used for sodicity hazard
management, (1) change the plant species to a more tolerant
species, (2) change the variety to a more tolerant variety, (3)
replace the sodium with calcium and then leach the sodium
out by two possible approaches for doing this: dissolve the
limestone (calcium carbonate) or gypsum (calcium sulfate) al-
ready present in the soil or, add calcium to the soil. If free lime
is present in the soil, it can be dissolved by applying sulfur or
sulfuric acid. Sulfur products reduce the pH which dissolves
the lime, thus freeing up the calcium. If free lime or gypsum
is not present in adequate amounts as determined by a soil test,
then calcium can be added.