A concentrated aqueous suspension of microfibrillated cellulose (MFC) comprising salts for plant nutrition, the concentrated aqueous suspension comprises microfibrillated linear polymers of D-glucose molecules homogenized through a fibrillation process (cellulose microfibers), calcium ions, sulfate ions and other substances for plant nutrition, being the concentration of calcium ions and sulfate ions in excess of the concentration corresponding to the solubility of calcium sulfate in water and being the proportion of microfibrillated cellulose (MFC) within a range of 1% and 99% w/w of the suspension.