Nitrogen-Use Efficiency, Nitrogen Leaching, and Nitrous Oxide Emissions As Influenced by Management Practices: I

Oral Session

S06 Soil & Water Management & Conservation

Nitrogen fertilizer has been increasingly used to increase crop yields in the last several decades. As a result, N leaching and N2O emissions (a potent greenhouse gas) also increased with increased N rates. For sustaining crop yields, reducing N fertilization rates, and improving environmental quality, novel management practices are needed to increase N-use efficiency and reduce N leaching and N2O emissions. This session will evaluate the effect of management practices, such as tillage, crop rotation, N fertilization, cover cropping, manure application, etc. on N-use efficiency, N leaching, and N2O emissions.

Cosponsor(s):

S04 Soil Fertility & Plant Nutrition, S06 Soil & Water Management & Conservation
Tuesday, October 23, 2012: 8:00 AM-11:25 AM
Duke Energy Convention Center, Room 202, Level 2
Organizer:
Upendra Sainju
Presider:
Upendra M. Sainju
8:00 AM
Introductory Remarks
8:05 AM
Evaluation of Climate Change On N2Ο Emissions in Agroecosystems.
Miguel Arango, Kansas State University; Aavudai Anandhi Swamy, Kansas State University; Charles W. Rice, Kansas State University; Stacy L. Hutchinson, Kansas State University
8:20 AM
Dryland Soil Management Practices Effect On Nitrogen-Use Efficiency and Nitrous Oxide Emissions.
Upendra M. Sainju, USDA-ARS, Sidney, MT; TheCan Caesar-TonThat, USDA-ARS; Joy Barsotti, USDA-ARS, Sidney, MT; Andrew Lenssen, Iowa State University
8:35 AM
Comparing N2O Emissions At Varying N Rates From Rainfed and Irrigated Corn in the US Midwest.
Neville Millar, W.K. Kellogg Biological Station, Michigan State University; Kevin Kahmark, Michigan State University; G. Philip Robertson, W. K Kellogg Biological Station and Dept. of Crop & Soil Sciences
8:50 AM
Nitrogen Placement Effects On Soil Nitrous Oxide Emissions From Irrigated Corn.
Ardell Halvorson, USDA-ARS; Stephen Del Grosso, Colorado State University
9:05 AM
Soil Nitrogen Fluxes in Wheat-Corn Double Cropping Systems in the North China Plain.
Chunsheng Hu, Center for Agricultural Resorces Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences; Wen-Xu Dong, Center for Agricultural Resources Research; Yu-Ming Zhang, Center for Agricultural Resources Research; Xiao-Xin Li, Center for Agricultural Resources Research; Shu-Ping Qi, Center for Agricultural Resorces Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences
9:20 AM
Break
9:35 AM
Manure Application Method and Timing Effects On Emission of Ammonia and Nitrous Oxide.
William Jokela, USDA-ARS; Carrie Laboski, University of Wisconsin; Todd Andraski, University of Wisconsin
9:50 AM
Managing Over-Winter N Losses From Green Manures by Altering Residue Incorporation Timing.
Brian Wallace, University of Saskatchewan; Derek H. Lynch, Nova Scotia Agricultural College; David Burton, Nova Scotia Agricultural College; Angela Bedard-Haughn, University of Saskatchewan
10:05 AM
Effects of Nitrapyrin, N Rates and N Timing On N2O Emissions in Maize Fertilized with UAN.
Juan Burzaco, Purdue University; Douglas Smith, National Soil Erosion Research Laboratory; Tony Vyn, Purdue University
10:20 AM
Effects of Nitrapyrin, N Rates and N Timing On NUE in Maize Fertilized with UAN.
Juan Burzaco, Purdue University; Tony Vyn, Purdue University
10:35 AM
Adapt-N On-Line Tool for Site-Specific and Weather-Adjusted Nitrogen Management in Maize: On-Farm Strip Trial Results.
Bianca Moebius-Clune, Cornell University; Harold van Es, Cornell University-Crop & Soil Sciences; Jeff Melkonian, Cornell University; Laura Joseph, Cornell University; Robert Schindelbeck, Cornell University; Shannon Gomes, Cedar Basin Crop Consulting, Inc.
10:50 AM
Cancelled
11:05 AM
Reduction of Nitrate Leaching by Suboptimal Mineral N Fertilization Depends Upon Crop-Specific Use of Mineralized N: Insights by Simulating Field Net N Mineralization.
Sabine Heumann, Leibniz University of Hannover, Institute of Soil Science; Annegret Fier, State Authority for Mining, Energy and Geology; Martin Haßdenteufel, State Authority for Mining, Energy and Geology; Heinrich Höper, State Authority for Mining, Energy and Geology; Walter Schäfer, State Authority for Mining, Energy and Geology; Tim Eiler, Chamber of Agriculture of Lower Saxony; Jürgen Böttcher, Leibniz University of Hannover, Institute of Soil Science
11:20 AM
Concluding Remarks
11:25 AM
Adjourn