177-10 Emissions of Dissolved Greenhouse Gases in the Subsurface Drainage from Different Tillage and Cropping Systems.

See more from this Division: ASA Section: Environmental Quality
See more from this Session: Improving Accuracy and Precision of Soil Carbon and Greenhouse Gas Emission Measurements and Quantification: I

Tuesday, November 17, 2015: 10:30 AM
Minneapolis Convention Center, M101 A

Khandakar R. Islam, Soil, Water and Bioenergy Resources, Ohio State University, Piketon, OH and Yogendra Raut, 1864 Shyville Rd., Ohio State University, Piketon, OH
Abstract:
Greenhouse gas emissions (CO2, N2O and CH4) from soils under agricultural management practices are closely associated with climate change effects. However, there is a lack of information on dissolved greenhouse gas emissions from the subsurface drainage, as compared with soil, under different management practices. The objective of our study was to measure the dynamics of dissolved greenhouse gas emissions from the agricultural subsurface drainage under different tillage and cropping systems. Subsurface drainage was collected over time, processed to displace dissolved greenhouse gases into free-state by using N2 and analyzed for CO2, CH4 and N2O, respectively using a gas chromatograph. Results showed that sub-surface drainage is a significant source of greenhouse gases as compared to soil.

See more from this Division: ASA Section: Environmental Quality
See more from this Session: Improving Accuracy and Precision of Soil Carbon and Greenhouse Gas Emission Measurements and Quantification: I

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