![]() Over 2,227 swine operations rely on this manure management system in North Carolina. Crops are grown on sprayfields in order to uptake the nutrients contained in the manure. In North Carolina, the fields associated with swine farms are typically referred to as “sprayfields” since the liquid is often land-applied using spray irrigation systems. This liquid is typically applied as fertilizer to crop and grass fields, with part of the liquid recycled for use in flushing the barns. The liquid layer contains decomposed dilute organic matter, soluble nitrogen, and phosphorus (Zongliu, 2020). These lagoons allow the flushed manure to separate into settled solids that decompose in the lagoon underneath a liquid layer. Swine producers store manure in one or several open-air lagoons on the property that can hold millions of gallons of animal manure. Manure contains nutrients and digested organics that require careful management. These CAFOs produce millions of gallons of manure (urine, feces, and water used in the production process) each year, which are flushed from swine barns to lagoons where manure is stored and treated. As the nation’s third largest hog producing state, North Carolina has CAFOs across the state, primarily concentrated in the East. A swine CAFO contains at least 2,500 swine weighing more than 55 pounds. In North Carolina, most swine are produced in concentrated animal feeding operations (CAFOs).
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |