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ARS Home » Midwest Area » Bowling Green, Kentucky » Food Animal Environmental Systems Research » Research » Publications at this Location » Publication #227499
Title: Quantification of Greenhouse Gas Emissions from Soil Applied Swine Effluent by Different Methods

Author
item Sistani, Karamat
item Warren, Jason
item Lovanh, Nanh

Submitted to: International Livestock Symposium
Publication Type: Proceedings
Publication Acceptance Date: 7/10/2008
Publication Date: 7/10/2008
Citation: Sistani, K.R., Warren, J.G., Lovanh, N.C. 2008. Quantification of Greenhouse Gas Emissions from Soil Applied Swine Effluent by Different Methods. International Livestock Symposium. CD: Aug. 30 - Sep.5

Interpretive Summary:

Technical Abstract: Greenhouse gas (CO2, CH4, and N2O) emissions were measured from a field experiment in which pre-plant swine effluent application methods where evaluated for no-till corn grain production. The treatments included a control, an inorganic fertilizer treatment that received 179 kg N ha-1 as urea ammonium nitrate (UAN), and three methods of swine effluent application at a rate of 200 kg N ha-1 through surface application with no incorporation, direct injection, and application in combination with soil aeration. Gas emission measurements were initiated directly after application and were collected throughout the growing season (141 d) using a vented chamber technique. There were no significant differences in CO2 losses, which averaged 738 g CO2 m-2. Methane emissions from the effluent injection and aeration treatments were 0.26 and 0.21 g CH4 m-2. A significantly lower loss of 0.12 g CH4 m-2 was measured from the surface applied effluent, which was elevated compared to control and fertilizer treatments that lost 0.06 and 0.08 g CH4 m-2. Nitrous oxide emissions were similar for the fertilizer, surface effluent application, and aeration effluent application treatments; emitting 0.74, 0.73, and 0.69 g N2O m-2, respectively. The effluent injection treatment emitted 0.47 g N2O m-2 which was not significantly different from the control treatment that emitted 0.24 g N2O m-2. Therefore, liquid manure application method needs to be considered when evaluating the impacts of liquid manure management on atmospheric greenhouse gas concentrations. [GRACEnet Publication]