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 An erratum has been published Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in 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 Web of Science (20) Citing Articles via Google Scholar Google Scholar Articles by Barton, L. Articles by Schipper, L. A. Search for Related Content PubMed PubMed Citation Articles by Barton, L. Articles by Schipper, L. A. Agricola Articles by Barton, L. Articles by Schipper, L. A. Related Collections Nutrient Cycling Nutrient Management Air Pollution

TECHNICAL REPORT
Atmospheric Pollutants and Trace Gases

Regulation of Nitrous Oxide Emissions from Soils Irrigated with Dairy Farm Effluent

Landcare Research, Private Bag 3127, Hamilton, New Zealand

* Corresponding author (lbarton{at}agric.uwa.edu.au)

Received for publication December 5, 2000. Animal slurries and effluents are commonly applied to soil as a source of organic N fertilizer. By increasing inorganic N, applying animal effluents may also increase soil nitrous oxide (N₂O) emissions. Our objectives were to (i) determine if dairy farm effluent (DFE) irrigation increased short-term N₂O emissions from a surface-drained peat soil and a freely drained mineral soil and (ii) see if this increase could be attributed to increased N availability, increased soil water content, or a combination of both factors. We measured short-term N₂O emissions following DFE irrigation in spring and autumn, using closed chambers. Nitrous oxide emissions from DFE-irrigated soils (50 kg N ha^-1, 20-mm hydraulic loading) were compared with soils receiving inorganic nitrogen and water (50 kg N ha^-1, 20 mm), inorganic N only (50 kg N ha^-1), water only (20 mm), and no treatment. Nitrous oxide emissions increased immediately following DFE irrigation to both soils, and were generally greater than emissions following the application of inorganic fertilizer with water. Increased N₂O emissions following DFE irrigation coincided with increased soil water contents and mineral N and CO₂ emissions. We suggest that DFE application increased N₂O emissions more than inorganic N fertilizer by enhancing denitrification either by increasing C availability and/or decreasing soil aeration following increased respiration. These findings suggest that the proportion of N applied to the soil and emitted as N₂O may at times be greater for organic N fertilizers than inorganic N fertilizers, particularly if the organic N fertilizer contains sufficient available C to enhance denitrification.

Abbreviations: DFE, dairy farm effluent • WFP, water-filled porosity

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]

				T. J. Clough and F. M. Kelliher Dairy Farm Effluent Effects on Urine Patch Nitrous Oxide and Carbon Dioxide Emissions J. Environ. Qual., May 11, 2005; 34(3): 979 - 986. [Abstract] [Full Text] [PDF]

				D. Ginting and B. Eghball Nitrous Oxide Emission from No-Till Irrigated Corn: Temporal Fluctuation and Wheel Traffic Effects Soil Sci. Soc. Am. J., May 6, 2005; 69(3): 915 - 924. [Abstract] [Full Text] [PDF]

				F. J. Calderon, G. W. McCarty, J. A. S. Van Kessel, and J. B. Reeves III Carbon and Nitrogen Dynamics During Incubation of Manured Soil Soil Sci. Soc. Am. J., September 1, 2004; 68(5): 1592 - 1599. [Abstract] [Full Text] [PDF]

				R. R. Sharpe, H. H. Schomberg, L. A. Harper, D. M. Endale, M. B. Jenkins, and A. J. Franzluebbers Ammonia Volatilization from Surface-Applied Poultry Litter under Conservation Tillage Management Practices J. Environ. Qual., July 1, 2004; 33(4): 1183 - 1188. [Abstract] [Full Text] [PDF]