Results of Full Factor Experiment, 2³ type, on cultivation of Gelidium latifolium (Grev.) Born. et Thur., in which three factors were changed on two levels (salinity – 26 and 34‰, biogen’s concentration – nitrogen 6.16 and 8.54 mg/L, phosphorus 1,24 and 1,74 mg/L – and volume density of planting – 2 and 4 g/L) have been presented. Intensity of light was 24-26 Klx, temperature – 24–26 °C. Mathematical models of average specific daily rate of biomass's growth and average specific rate of biogen’s consumption (V_N, V_P) were constructed. It has been shown, that varied from 0.025 to 0.073 day^-1, V_N – from 23 to 71 µg/g·h. and V_P – from 2.6 to 9.6 µg/g·h. It was determined, that initial concentration of nitrogen and phosphorus increasesd during 24 h 2.5–10 times.

Keywords: cultivation, red seaweeds, gelidium, biogenous matte, rate of consumption

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