A method for producing a plant life enhancing product is described. The method includes: (i) anaerobically digesting agricultural residue to produce an anaerobically activated organic residue and an ammonia-enriched water； (ii) aerobically digesting the ammonia-enriched water to produce an aerobically activated organic residue； and (iii) blending the anaerobically activated organic residue with the aerobically activated organic residue to produce the plant life enhancing product.
