ASA Section: Environmental Quality Session: Agricultural Practices to Improve Nitrogen-Use Efficiency and Mitigate Greenhouse Gas Emission: I (ASA, CSSA and SSSA International Annual Meetings)

92 Agricultural Practices to Improve Nitrogen-Use Efficiency and Mitigate Greenhouse Gas Emission: I

Oral Session

ASA Section: Environmental Quality

Nitrogen is a major limiting nutrient for crop production. As a result, substantial amounts of N fertilizers have been applied to sustain and/or increase yields. This has also resulted in major environmental consequences, such as N leaching in the groundwater and emission of N2O. Agricultural practices contribute about 70% of the global N₂O emission. This session will discuss agricultural management options, such as N fertilization, cover cropping, crop rotation, fallow management, tillage, etc. that reduce N fertilization rates to crops and greenhouse gas emissions, increase N-use efficiency reducing N losses via emission or leaching, and sustain crop yields and quality.

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Cosponsor(s):

Soil Carbon and Greenhouse Gas Emissions Community

Monday, November 3, 2014: 7:55 AM-9:30 AM

Long Beach Convention Center, Room 201B

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Community Leader:

Jane M-F Johnson

Presider:

Hero T. Gollany

7:55 AM

Introductory Remarks

8:00 AM

92-1

Nitrous Oxide Emissions from Subsurface Banded Poultry Litter in a Cover Crop-Based Corn System.
Brian Davis, University of Maryland; Steven Mirsky, USDA - ARS; Brian A. Needelman, University of Maryland; Michel A. Cavigelli, USDA-ARS; Jude Maul, USDA-ARS; Stephanie A. Yarwood, University of Maryland

Audio File

8:15 AM

92-2

N Fertilizer Management Impacts N2O Emissions and Grain Yield in No-till Corn.
Leonardo M. Bastos, University of Nebraska - Lincoln; Charles W. Rice, Kansas State University

Audio File Recorded Presentation

8:30 AM

92-3

Enhanced Efficiency Urea Sources and Placement Effects on N2O Emissions.
Mario Tenuta, University of Manitoba; Xiaopeng Gao, University of Manitoba; Donald Flaten, University of Manitoba; Haben Asgedom, Farmers Edge

Audio File Recorded Presentation

8:45 AM

92-4

Effect of Dicyandiamide Nitrification Inhibitor on Maize Yield and Soil Nitrate Levels in Four Field Studies.
John S. Kruse, Koch Agronomic Services, LLC

Audio File Recorded Presentation

9:00 AM

92-5

Ammoia Volatilization from Fertigated N Applications.
Donald A. Horneck, Oregon State University; Sarah DelMoro, John Haas

Audio File Recorded Presentation

9:15 AM

92-6

Fertilizer Nitrogen Source and Inhibitor Approaches for Sustaining Agronomic Productivity and Mitigating Nitrous Oxide Emissions in Intensively Managed Grassland.
Mary Harty, TEAGASC; Patrick J Forrestal, Teagasc; Dominika Krol, TEAGASC; Gary J Lanigan, Teagasc; Stan Lalor, Teagasc; Deirdre Hennessy, Teagasc, Moorepark Animal & Grassland Research and Innovation Centre; Catherine Watson, Agri-Food and Biosciences Institute (AFBI); Karl G Richards, Teagasc

Audio File Recorded Presentation

9:30 AM

Adjourn.

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