Record Display for the EPA National Library CatalogRECORD NUMBER: 9 OF 12
|Main Title||Pollution abatement from cattle feedlots in northeastern Colorado and Nebraska /|
|Author||Porter, Lynn K., ; Viets, Frank G. ; McCalla, T. M. ; Elliott, Lloyd F. ; Norstadt, Fred A. ; Duke, Harold R. ; Swanson, Norris P. ; Mielke, Lloyd N. ; Hutchinson, Gordon L. ; Mosier, Arvin R. ; Schuman, G. E.|
|CORP Author||Agricultural Research Service, Fort Collins, Colo.|
|Publisher||National Environmental Research Center, Office of Research and Development, U.S. Environmental Protection Agency, For sale by the Supt. of Docs., U.S. Govt. Print. Off.|
|Stock Number||PB-246 242|
|Subjects||Cattle trade--Environmental aspects--Colorado ; Cattle trade--Environmental aspects--Nebraska ; Feedlots--Environmental aspects--Colorado ; Feedlots--Environmental aspects--Nebraska|
|Additional Subjects||Water pollution abatement ; Agricultural wastes ; Waste disposal ; Surface water runoff ; Livestock ; Cattle ; Slopes ; Climate ; Salinity ; Land use ; Drainage ; Ammonia ; Soil water ; Aeration ; Hydrogen sulfide ; Amines ; Lagoons(Ponds) ; Anaerobic processes ; Dilution ; Precipitation(Meteorology) ; Nebraska ; Colorado ; Nitrogen ; Feedlot wastes ; Manure|
|Collation||xi, 120 pages : illustrations ; 27 cm|
Climatic factors, feedlot runoff, and organic material in the runoff were evaluated in experimental and commercial feedlots. The effects of slope, stocking rates, terraces, basins, and holding ponds were evaluated to obtain the best controls for containing runoff. In eastern Nebraska, 70 cm annual precipitation produces 23 cm of runoff; whereas, in northeastern Colorado, 37 cm annual precipitation gives only 5.5 cm of runoff. Large applications of runoff liquid, up to 91 cm on grass-Ladino and 76 cm on corn, in Nebraska did not decrease yields; however, in northeastern Colorado, the concentrated high-salt runoff required dilution before direct application to crops. The organic manure-soil interface severely restricts the movement of water, nitrates, organic substances, and air into the soil beneath feedlots. The amounts of NO3-N in soil cores taken from Nebraska feedlots and croplands ranked as follows: Abandoned feedlots > feedlot cropland > upland feedlots > river valley feedlots > manure mounds > alfalfa > grassland. Feedlots contribute NH3, amines, carbonyl sulfide, H2S, and other unidentified substances to the atmosphere. Ammonia and amine can be scavenged from the air by green plants and water bodies. Anaerobic conditions in feedlots are conducive to the production of carbonyl sulfide, H2S, and amines. Management practices, such as good drainage, that enhance aeration will decrease the evolution of these compounds.
Report prepared by U.S. Department of Agriculture, Agricultural Research Service, Fort Collins, Colorado. Includes bibliographical references (pages 106-110) and list of publications (pages 111-120). "Grant EPA-IAG-D4-0446; program element 1BB039; 21 BEQ/012."
Introduction -- Summary -- Conclusion -- Recommendations -- Descriptions of field sites, special facilities, and methods -- Composition and amount of runoff including relation to climatic variables, slope, stocking density, site, site modification -- Disposal of runoff -- Composition of soil solution and soil atmosphere beneath feedlots -- Investigations on methods of extraction of nitrate from soil profiles of abandoned feedlots -- Airborne pollutants. Climatic factors, feedlot runoff, and organic material in the runoff were evaluated in experimental and commercial feedlots. The effects of slope, stocking rates, terraces, basins, and holding ponds were evaluated to obtain best controls for containing runoff. The organic manure-soil interface severely restricts the movement of water, nitrates, organic substances, and air into the soil beneath feedlots. Management practices, such as good drainage, that enhance aeration will decrease the evolution of volatile compounds.