ABSTRACr. In soil salinized with different concentrations of sodium chloride, the total counts of soil fungi were significantly
decreased during 11 weeks of incubation. Similarly, the total count of bacteria and actinomycetes were severely depressed by
increasing salinity level above 5 %. Invertase and urease activities were severely decreased as NaCi concentration increase
during the incubation. Also, the effect on nitrate reductase was inhibitory with most treatments.