121 Management Practices Impact On Soil Carbon and Nitrogen Cycling in Agricultural Ecosystems: Greenhouse Gas Emissions

Oral Session
S06 Soil & Water Management & Conservation

Information is needed on the effects of management practices on soil quality and productivity and C and N cycling. This session will focus on the impact of management practices on soil aggregation, C and N dynamics, and greenhouse gas emission. Emphasis will be given on C and N cycling in the agricultural ecosystem as a result of C and N inputs to the soil, their transformation and translocation in the soil profile, sequestration, and losses as water soluble C and N, greenhouse gas emission, wind and water erosion, and other processes. This session will strengthen our knowledge on the impact of management practices on soil quality and productivity, C and N balance, proportion of C and N inputs sequestered in the soil and lost as greenhouse gases, and N use efficiency to reduce N loss.


A05 Environmental Quality, A08 Integrated Agricultural Systems
Monday, November 1, 2010: 1:30 PM-3:20 PM
Hyatt Regency Long Beach, Shoreline A, First Floor

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Upendra Sainju and Maysoon Mikha
Upendra Sainju
1:30 PM
Introductory Remarks
1:35 PM
Management-Related N2O Emissions in a Mediterranean Vineyard.
Gina Garland, University of California-Davis; Johan Six, University of California-Davis; Emma Suddick, Department of Plant Sciences, University of California; Martin Burger, University of California-Davis; William Horwath, University of California-Davis
1:50 PM
Towards Quantifying the Key Drivers of Nitrous Oxide Emissions in Agricultural Crop Production.
Bernie Zebarth, Agriculture and Agri-Food Canada; Emily Snowdon, Nova Scotia Agricultural College; David Burton, CANADA, Nova Scotia Agric. Coll.; Claudia Goyer, Agriculture and Agri-Food Canada; Philippe Rochette, Agriculture & Agri-Food Canada; Ray Dowbenko, Agrium Inc.
2:20 PM
Tillage and Residue Management Effects On Nitrous Oxide Emission From Sandy Loam Soil.
James K. Mutegi, Aarhus University; Lars J. Munkholm, Aarhus University; Bjørn M. Petersen, Aarhus University; Elly Hansen, Aarhus University; Soren O. Petersen, Aarhus University
2:35 PM
Effect of Irrigation Management On Nitrous Oxide Emissions From Winter Wheat.
Clemens Scheer, Institute for Sustainable Resources (ISR); Peter Grace, Institute for Sustainable Resources (ISR); David Rowlings, Institute for Sustainable Resources (ISR); Davide Cammarano, University of Florida
3:05 PM
Impacts of Increasing Chemical Fertilizer Use On Nitrous Oxide Emissions From a Smallholder Agricultural System in Western Kenya.
Jonathan Hickman, The Earth Institute at Columbia University; Cheryl Palm, Earth Institute, Columbia University; Jianwu (Jim) Tang, Marine Biological Laboratory; Jerry Melillo, The Ecosystems Center
3:20 PM