Preliminary studies were conducted on the effects of various doses of NaCl (salinity levels) added to soil on the growth kinetics of three clones of Salix viminalis L. During vegetation the plants were treated twice with the solution of sodium chloride at the following concentrations: 0 (control); 1; 1.5; 2%. Growth was measured with increases in shoot length and thickness; dry matter was also determined. The growth process was best described with quadratic function. The highest elongation growth dynamics was noted for Bjor clone at 1% salinity level. At the same salinity the greatest stem thickness increase was observed in Jorr and Tora. As far as the dry matter yield was concerned, Jorr was found to be most tolerant to saline stress, while Tora – least tolerant.

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