The Effectiveness of Digestate Use for Fertilization in an Agricultural Cropping System

This study evaluated the performance of animal-based digestates (from pig, chicken, and cow manure) as sustainable fertilizer alternatives to synthetic nitrogen over three consecutive years. Digestate applications enhanced soil phosphorus and potassium levels and led to higher grain yields, particularly in the third year. Nitrogen use efficiency remained moderate but showed a strong positive relationship with yield. Although grain and straw quality responses varied, no adverse effects were observed. Overall, the findings highlight the promising short- to mid-term potential of digestates under favorable climatic conditions.