206 Symposium--Soil Organic Amendments and N Cycling: Strategies to Improve Nitrogen Use Efficiency, Reduce Synthetic Fertilizer Input, Nitrate Leaching, and Nitrous Oxide Emissions

Oral Session
SSSA Division: Soil Biology and Biochemistry
In recent years, soil organic amendments, e.g. cover crop, manure, compost and biochar, have been adapted to increase soil fertility and general soil health. However, the complex interactions between these organic amendments and N cycling processes such as N immobilization and mineralization, and N2O production pathways is not well understood but are needed to guide management practices with the goal of mitigating emissions and increasing soil productivity and sustainability. In this session the drivers, mechanisms and significance of different N cycling processes as affected by soil organic amendments, as well as the strategies to maximum the benefits of organic amendment application will be presented and discussed.

Approved for 3.0 NM CEUs


SSSA Division: Soil Fertility and Plant Nutrition
SSSA Division: Soil and Water Management and Conservation

Animal Agriculture and the Environment Community

Tuesday, November 8, 2016: 8:00 AM-11:00 AM
Phoenix Convention Center North, Room 131 B

Xia Zhu-Barker and William R. Horwath
William R. Horwath and Xia Zhu-Barker
8:00 AM
Introductory Remarks
8:05 AM
Impact of Organic Matter Amendments on Integrated Nutrient Management in California Almond.
Sat Darshan S. Khalsa, University of California Davis; Stephen C. Hart, University of California Merced; Patrick H. Brown, University of California Davis
8:55 AM
Impacts of Biochar-Manure Composts on Soil Nitrogen Retention and N2O Emissions Mitigation.
Wei Shi, North Carolina State University; Yinghong Yuan, Nanchang Institute of Technology, China; Huaihai Chen, North Carolina State University; Wenqiao Yuan, North Carolina State University
9:20 AM
Explaining the Rotation Effect: Do Soil N Dynamics Contribute to Higher Yields in Diverse Crop Systems?.
Michael J Castellano, Iowa State University; William R. Osterholz, Iowa State University; Matt Liebman, Iowa State University
9:45 AM
Assessing N Management Strategies Using Comet-Farm.
Keith Paustian, Colorado State University; Mark Easter, Colorado State University; Kevin Brown, Colorado State University; Adam Chambers, USDA/NRCS; Matthew Stermer, Colorado State University; Crystal Tourenne, Colorado State University
10:10 AM
Concluding Remarks
10:15 AM
10:35 AM