Date of this Version
Published in 2021 Nebraska Beef Cattle Report, University of Nebraska Extension Publication MP110
An experiment was conducted to evaluate the impact of biochar and time on manure nutrient retention. Pans were used to simulate feedlot pens with 10 replications per treatment. Biochar was included at 0, 5, or 10% of manure dry matter with 30 and 60 day durations to evaluate pan contents over time. There was a 13- percentage unit increase in organic matter losses from day 30 to 60 for pans without biochar, and a 3- percentage unit increase for pans containing biochar. The least nitrogen loss was measured on the pans without biochar harvested at 30 days. Pans harvested at 60 days all had similar nitrogen loss. Phosphorus losses were not impacted by treatment while potassium losses decreased over time but were not impacted by biochar treatment. In this study biochar included at 5 and 10% of manure dry matter limited carbon losses but did not impact manure nutrient retention of nitrogen, phosphorus, or potassium.