The harmful effects of chemical fertilizers on the environment are proven, their excessive use causes serious problems of contamination in soils and groundwater. Biofertilizers represent a viable and sustainable option for agriculture; the reuse of hydrobiological waste is an excellent alternative. After a 90-day experimentation process, the growth of the champion radish was evaluated, in response to biofertilization with hydrobiological residues, obtained from residues of marine algae and fish. Seven treatments were carried out in pots: homemade biofertilizer, biofertilizer with hydrobiological residues (6 types of mixtures), diluted in four doses: 0.5:20, l:20, 1.5:20 and 2:20 ml/L of water, and a control without fertilizer (only water); all treatments were doubled. The combination 60% fish - 40% algae, with a dose of 2:20 ml/L of water, had better results in terms of growth, since fis...