Efficiency of Recycled Biogas Digestates as Phosphorus Fertilizers for Maize

Despite phosphorus resources on Earth being limited, over fertilization in many agricultural situations causes significant resource consumption. Phosphorus-recycling within production can reduce global dilution into the environment and is thus essential to secure sustainable future supply. This study investigated efficacy of fertilizers recycled from biogas digestates maize shoots grown under controlled greenhouse conditions, two soils, a pot experiment. Variables were plant-available soil, plant biomass production, concentration phosphorus, calcium, magnesium shoots. Soils treated with three different fertilizer fractions, separated digestates, at equivalent concentrations, using combinations application techniques, isolated or combination, compared triple superphosphate (TSP) as reference. One fractions (P-Salt) had effects TSP surface soil. In second soil (with less active life nutrient content), equivalence was achieved (P-Salt dried solids). The enhancement fertilizing effect by solids synergistic, indicating that conditioning effect. results show are valuable source for recycling have even superior properties TSP.