The 2012 ASHS Annual Conference

The common practice of spreading poultry litter on the surface of pastures and fields is being restricted near ditches and streams due to storm runoff.  This collaborative proposal between UMES and USDA–ARS scientists has developed a new manure application technology for placing the material below the surface of the soil.  Working with the Extension Service, the team has demonstrated a 30% increase in corn yields, 90% reduction in phosphorous runoff and ammonia-nitrogen emissions, and a 30% reduction in odor.  A prototype machine has been manufactured and is currently being evaluated by shareholders to provide input and suggestions for commercial production of the “Subsurfer”.  Demonstrations are now being conducted with collaborators in Arkansas, Pennsylvania, and the local shareholder farmers in Maryland.  It is expected this technology will help improve water quality by reducing nutrient runoff, decrease litter application rates by improving nutrient availability, and decrease runoff volume by increasing the water-holding capacity of the soil.