Anaerobic digestion and solid-liquid fraction separation are manure treatment strategies used on commercial dairy farms. These treatment strategies change dairy manure characteristics, such as total ammoniacal nitrogen (TAN), dry matter content, and pH which affect ammonia (NH3) emissions following field application. Low-disturbance manure application method like shallow disk manure injection can provide the benefits of manure incorporation, including reducing NH3 emissions, in no-till agricultural systems. This study aimed to measure the impact of liquid separated anaerobically digested manures applied using two methods (surface application without incorporation and shallow disk manure injection) on no-till farmland to reduce ammoniacal-N and conserve manure N for crop production. 

Ammonia (NH3) loss following manure application is an environmental concern and N loss for crop production. Shallow disk manure injection is expected to reduce NH3 loss compared to surface application without incorporation but may increase nitrous oxide emissions (N2O). Synchronizing manure N with crop growth may increase N recovery and reduce N2O emissions. 

In a corn (Zea mays L.) production system, nitrogen (N) is one of the largest input costs, a major contributor to greenhouse gas emissions, the most limiting nutrient for crop growth and yield, and the nutrient with the most pathways to become a pollutant in the environment. Side-dressing of N aligns nutrient supply with crop needs, enhancing nitrogen use efficiency (NUE) while minimizing environmental nitrogen losses. However, farmers often apply excess side-dress N fertilizer to corn because of the uncertainty in predicting the economic optimum nitrogen rate (EONR). Optimized N management, achieved through fine-tuning side-dress N rate application, reduces carbon (C) footprint, ensures compliance with regulations, and supports long-term soil health, ultimately promoting sustainable agricultural practices that benefit both the environment and economic viability. Determining the best corn side-dress N fertilizer rate recommendation tools would be valuable. 

The Red River Valley of North Dakota and Minnesota is a major sugarbeet production region in the United States. Due to conventional tillage practices, soils have less residue cover after sugarbeet harvest in the fall, and the soil is exposed to wind and water erosion. In the spring, severe damage due to wind blast of soil particles can cause sugarbeet stand loss. Cover crops have the potential to reduce the impacts of soil erosion and improve nutrient use efficiency. Interseeding cover crops before harvest increases the likelihood of cover crop establishment and growth.