PJB-1970-1
RESPONSE OF TRIFOLIUM SUBTERRANEUM TO SODIUM CHLORIDE UNDER DIFFERENT NUTRIENT CONDITIONS
S.Z. HYDER
Abstract
Salt tolerance and interaction of NaCl with nutrient ions of the growth medium was studied in Trifolium subterraneum (cv. Wenigup). Growth of this species was
reduced at 50 m-equiv/1 NaCl indicating
that it is a salt sensitive species. Such growth reduction was due to higher sodium and chloride uptake and lower potassium content of the plant tissues. Adverse effects of NaCl on growth of this species were more pronounced when the plants were grown in low than in high nutrient solution. In studying the interaction of NaCl at four different nutrient concentrations, the results
showed an improvement in growth linearly as the strength of nutrient concentration increased. It is concluded that NaCl at low nutrient reduces growth by ion unbalance which is mainly due to low calcium status of the nutrient medium.
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