The disclosure provides a composition comprising i) a diluent derived from a plant, yeast, insect, crustacean or algae, and ii) a nitrogen fixing microorganism; along with methods of preparing and using said composition.

The present invention is directed to a method of manufacturing a vegetable substrate acting as prolonged-release fertilizer, transforming in an accelerated manner the organic waste into a nutrient-rich organic substrate and humic substances. Further, the patent application refers to the vegetable substrate resulting from said method and the uses thereof, such as prolonged-release fertilizer and soil acidity corrective.

The present invention is directed to a method of manufacturing a vegetable substrate acting as prolonged-release fertilizer, transforming in an accelerated manner the organic waste into a nutrient-rich organic substrate and humic substances. Further, the patent application refers to the vegetable substrate resulting from said method and the uses thereof, such as prolonged-release fertilizer and soil acidity corrective.