EFFECT OF SODIUM-CHLORIDE SALINITY OF CATION EQUILIBRIA IN GRAPEVINE

The addition of various sodium chloride (NaCl) doses (2-150 meq/L) to a balanced standard nutrient solution brought about an increase in the sodium (Na) content of all the vegetative organs of grapevine. The Na - potassium (K) antagonism was shown by the decrease in K content, ev en at low NaCl doses. The calcium (Ca) and magnesium (Mg) contents of the various plant organs were also decreased as the NaCl content of th e nutrient solution was increased. The cationic sums for the various p lant organs remained constant, with the exception of the highest NaCl dose which was lethal after two months.