Proper manure application key to preserving nutrients, controlling erosion
September 5, 2017 by Wisconsin State Farmer
September 5, 2017, Manawa, WI – Although manure provides valuable nutrients, especially nitrogen, to high N-requiring crops such as corn, proper application is key to keeping those nutrients in the soil while reducing soil erosion.
Methods of applying manure into the ground without significantly disturbing the soil were presented to area farmers at the recent summer field day sponsored by the Waupaca County Forage Council.
During the morning presentations, speakers noted that a large portion of nitrogen, about half in typical liquid dairy manure, is in ammonium or urea form and can potentially be lost to the air as ammonia if the manure is not incorporated into the soil promptly.
Historically, tillage has been the most common method of incorporation, but tillage and, to a lesser extent, standard injection reduce crop residue cover, leaving the field more susceptible to erosion.
A common goal among producers is to find new methods for applying liquid dairy manure to maximize manure N availability while maintaining crop residue cover for erosion control.One of the field-day presenters, Dan Brick, of Brickstead Dairy near Greenleaf in Brown County, has become an active conservation leader, who’s committed to finding solutions that maintain environmental quality while improving soil fertility.
Through the Natural Resource Conservation Service (NRCS) Environmental Quality Incentives Program (EQUIP), Brick invested in an additional 2.9-million-gallon concrete manure structure to contain manure and milk house waste through the winter until it can be spread safely as fertilizer in the spring on his 900 acres of crop and hay ground. READ MORE