Digestate contains numerous fundamental supplements for crops, including nitrogen (N) and phosphorus (P), and it can adjust the biogeochemical pattern of supplements and soil usefulness. In a nine-treatment field experiment conducted in eastern Portugal with two horticultural crops, the purpose of this work was to evaluate the fertilizing effects of digestate on chemical and biological soil properties: control without preparation; mineral N preparation with 85 kg ha−1; fertilization with digestate (DG) at progressively higher N rates (85, 170, 255, or 340 kg N ha1); and fertilization with various digestate and mineral N combinations (DG at 85 or 170 kg N plus 60 kg N ha–1 or 170 kg N plus 25 kg N ha–1). Notwithstanding N, digestate provided huge measures of P, Ca, K, and Mg and altogether expanded soil Olsen P, mineral N, and natural C. At high dosages, it diminished phosphatase and β-glucosidase exercises, as well as growths and bacterial biomass, contrasted with the control or mineral N treatment, and it likewise adversely impacted soil P and C cycling limit and microbial biomass. The digestate's organic-to-total-N and N-to-P ratios are crucial for assessing its agronomic management as a fertilizer.
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