| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
a Southern Piedmont Conservation Research Unit, JPCSNRCC, USDA-ARS, 1420 Experiment Station Road, Watkinsville, GA 30677
b National Soil Tilth Laboratory, USDA-ARS, Ames, IA 50011
c Laboratory of Applied Physical Chemistry, Faculty of Agricultural and Applied Biological Sciences, Ghent University, Coupure Links 653, Ghent B-9000, Belgium
d 3864 Harts Mill Lane, NE, Atlanta, GA 30319
* Corresponding author (lharper{at}uga.edu).
Received for publication June 23, 2003.
Ammonia (NH3) emissions from animal systems have become a primary concern for all of livestock production. The purpose of this research was to establish the relationship of nitrogen (N) emissions to specific components of swine production systems and to determine accurate NH3 emission factors appropriate for the regional climate, geography, and production systems. Micrometeorological instrumentation and gas sensors were placed over two lagoons in North Carolina during 1997–1999 to obtain information for determining ammonia emissions over extended periods and without interfering with the surrounding climate. Ammonia emissions varied diurnally and seasonally and were related to lagoon ammonium concentration, acidity, temperature, and wind turbulence. Conversion of significant quantities of ammonium 
to dinitrogen gas (N2) were measured in all lagoons with the emission rate largely dependent on NH4+ concentration. Lagoon NH4+ conversion to N2 accounted for the largest loss component of the N entering the farm (43% as N2); however, small amounts of N2O were emitted from the lagoon (0.1%) and from field applications (0.05%) when effluent was applied nearby. In disagreement with previous and current estimates of NH3 emissions from confined animal feeding operation (CAFO) systems, and invalidating current assumptions that most or all emissions are in the form of NH3, we found much smaller NH3 emissions from animal housing (7%), lagoons (8%), and fields (2%) using independent measurements of N transformation and transport. Nitrogen input and output in the production system were evaluated, and 95% of input N was accounted for as output N from the system.
Abbreviations: FF, farrow-to-finish • FW, farrow-to-wean
Related articles in JEQ:
This article has been cited by other articles:
|
|
 |
|
  L. A. Harper, T. K. Flesch, J. M. Powell, W. K. Coblentz, W. E. Jokela, and N. P. Martin Ammonia emissions from dairy production in Wisconsin J Dairy Sci, May 1, 2009; 92(5): 2326 - 2337. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 J. C. Chee-Sanford, R. I. Mackie, S. Koike, I. G. Krapac, Y.-F. Lin, A. C. Yannarell, S. Maxwell, and R. I. Aminov Fate and Transport of Antibiotic Residues and Antibiotic Resistance Genes following Land Application of Manure Waste J. Environ. Qual., April 27, 2009; 38(3): 1086 - 1108. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A. C. VanderZaag, R. J. Gordon, D. L. Burton, R. C. Jamieson, and G. W. Stratton Ammonia Emissions from Surface Flow and Subsurface Flow Constructed Wetlands Treating Dairy Wastewater J. Environ. Qual., October 23, 2008; 37(6): 2028 - 2036. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 W. Wu-Haan, W. J. Powers, C. R. Angel, C. E. Hale III, and T. J. Applegate Nutrient Digestibility and Mass Balance in Laying Hens Fed a Commercial or Acidifying Diet Poult. Sci., April 1, 2007; 86(4): 684 - 690. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
L. A. Harper, K. H. Weaver, and R. A. Dotson Ammonia Emissions from Swine Waste Lagoons in the Utah Great Basin J. Environ. Qual., January 5, 2006; 35(1): 224 - 230. [Abstract] [Full Text] [PDF]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
| The SCI Journals | Agronomy Journal | Crop Science | |||
| Journal of Natural Resources and Life Sciences Education |
Vadose Zone Journal | ||||
| Soil Science Society of America Journal | Journal of Plant Registrations | The Plant Genome | |||
