Exploring the Potential of Codium sp. Algal Residues as a Biofertilizer to Enhance Bean Plant Growth in Sustainable Agriculture

<p>This study investigates, for the first time, the valorization of green algae residues as a soil biofertilizer. The effect of <em>Codium</em> sp. seaweed residue, obtained from chemical hydrolysis, was assessed on the aerial growth, root development, and yield of <em>Phaseolus vulgaris</em> L. Various combinations of algae residue and compost were tested to optimize the residue quantity. Compost was used to prevent clogging caused by the direct addition of residue. Five concentrations of residue (0%, 2%, 4%, 6%, and 8%) were combined with four compost doses (0%, 4%, 8%, and 12%), resulting in 16 combinations tested on 96 plants, with six replicates per treatment. The results indicate that the residue positively impacted growth and yield up to 4%, beyond which it had a detrimental effect on the plants. The best results were obtained with 4% <em>Codium</em> sp. residue and 12% compost, presenting a sustainable biofertilizer solution for agriculture.</p>