Ammonia emissions after trailing hose application of digestates and cattle slurry

• DOI: 10.1007/s10705-025-10407-7
• Publication Date: 2025-04-15T14:47:36Z
• Authors: Norah Efosa; Christoph Häni; Thomas Kupper; Hans-Martin Krause; Johan Six; Else K. Bünemann
• Keywords: Biogas

Abstract Anaerobic digestion (AD) is a promising technique for waste management, producing energy and contributing to nutrient recycling in agroecosystems. While digestates have higher plant-available contents, they may be prone increased ammonia (NH 3 ) losses due elevated pH values ammonium contents. This study investigates NH emissions from an agricultural digestate consisting of cattle slurry, solid manure food processing (SLA) municipal organic (LID) applied alongside untreated slurry (SLU) as reference maize cereals with trailing hose. Values dry matter, ammoniacal nitrogen (TAN) were SLA LID than SLU. Emissions determined five application events over three years concentration measurements using impinger system combined backward Lagrangian Stochastic dispersion modeling. On average, 31%, 42%, 43% TAN volatilized SLU, SLA, LID, respectively. Despite being the treatments, these differences not statistically significant. Therefore, it remains unclear whether differ slurry. topic needs further investigation increasing use AD.