p. 187 - 191 UTILISATION DES ENGRAIS CHIMIQUES DANS LA CULTURE DE L'ALGUE UNICELLULAIRE Tetraselmis suecica KYLIN (BUTCH) Elena Csernok Institut Roumanin de Recherches Marines Constanta Abstract T. suecica were in sea water enriched with two sorts of complex fertilizers with agricultural use with different ratio N/P. Growth rate of cells was studied by determining the growth constant (K) and generation time (tg). The fertilizer with ratio N/P = 4,59 is most adequate for the growth of species Tetraselmis suecica.