HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Figures Only Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in ISI Web of Science Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via ISI Web of Science (14) Citing Articles via Google Scholar Google Scholar Articles by Sharpe, R. R. Articles by Harper, L. A. Search for Related Content PubMed PubMed Citation Articles by Sharpe, R. R. Articles by Harper, L. A. Agricola Articles by Sharpe, R. R. Articles by Harper, L. A. Related Collections Nutrient Cycling Air Pollution Animal Waste

TECHNICAL REPORT
Atmospheric Pollutants and Trace Gases

Nitrous Oxide and Ammonia Fluxes in a Soybean Field Irrigated with Swine Effluent

Southern Piedmont Conservation Research Center, USDA-ARS, 1420 Experiment Station Road, Watkinsville, GA 30677

* Corresponding author (rsharpe{at}arches.uga.edu)

Received for publication February 2, 2001. In the United States, swine (Sus scrofa) operations produce more than 14 Tg of manure each year. About 30% of this manure is stored in anaerobic lagoons before application to land. While land application of manure supplies nutrients for crop production, it may lead to gaseous emissions of ammonia (NH₃) and nitrous oxide (N₂O). Our objectives were to quantify gaseous fluxes of NH₃ and N₂O from effluent applications under field conditions. Three applications of swine effluent were applied to soybean [Glycine max (L.) Merr. ‘Brim’] and gaseous fluxes were determined from gas concentration profiles and the flux-gradient gas transport technique. About 12% of ammonium (NH₄–N) in the effluent was lost through drift or secondary volatilization of NH₃ during irrigation. An additional 23% was volatilized within 48 h of application. Under conditions of low windspeed and with the wind blowing from the lagoon to the field, atmospheric concentrations of NH₃ increased and the crop absorbed NH₃ at the rate of 1.2 kg NH₃ ha^-1 d^-1, which was 22 to 33% of the NH₃ emitted from the lagoon during these periods. Nitrous oxide emissions were low before effluent applications (0.016 g N₂O–N ha^-1 d^-1) and increased to 25 to 38 g N₂O–N ha^-1 d^-1 after irrigation. Total N₂O emissions during the measurement period were 4.1 kg N₂O–N ha^-1, which was about 1.5% of total N applied. The large losses of NH₃ and N₂O illustrate the difficulty of basing effluent irrigation schedules on N concentrations and that NH₃ emissions can significantly contribute to N enrichment of the environment.

Abbreviations: DOY, day of year

This article has been cited by other articles:

				V. Parnaudeau, S. Genermont, C. Henault, A. Farrugia, P. Robert, and B. Nicolardot Measured and Simulated Nitrogen Fluxes after Field Application of Food-Processing and Municipal Organic Wastes J. Environ. Qual., January 13, 2009; 38(1): 268 - 280. [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]

				L. A. Harper, R. R. Sharpe, T. B. Parkin, A. De Visscher, O. van Cleemput, and F. M. Byers Nitrogen Cycling through Swine Production Systems: Ammonia, Dinitrogen, and Nitrous Oxide Emissions J. Environ. Qual., July 1, 2004; 33(4): 1189 - 1201. [Abstract] [Full Text] [PDF]

				L. A. Harper, R. R. Sharpe, and J. D. Simmons Ammonia Emissions from Swine Houses in the Southeastern United States J. Environ. Qual., March 1, 2004; 33(2): 449 - 457. [Abstract] [Full Text] [PDF]

				K. R. Woodard, E. C. French, L. A. Sweat, D. A. Graetz, L. E. Sollenberger, B. Macoon, K. M. Portier, B. L. Wade, S. J. Rymph, G. M. Prine, et al. Nitrogen Removal and Nitrate Leaching for Forage Systems Receiving Dairy Effluent J. Environ. Qual., November 1, 2002; 31(6): 1980 - 1992. [Abstract] [Full Text] [PDF]