671 Tools for Improving Nitrogen Management

Oral Session
S04 Soil Fertility & Plant Nutrition
This session deals with papers that describe the the development and tools to improve nitrogen fertilizer management.
Tuesday, 7 October 2008: 8:25 AM-11:30 AM
George R. Brown Convention Center, 360F

R.S. Tubbs
8:25 AM
Introductory Remarks
8:30 AM
Evaluation of an Active Crop Canopy Sensor Using a Delta Yield Approach.
Bill Deen, University of Guelph; Adam Pfeffer, University of Guelph; Greg Stewart, Ontario Ministry of Agriculture & Food
8:45 AM
Crop Sensors for Variable-Rate Nitrogen Application to Cotton.
Peter Scharf, Univ. of Missouri; Luciane Oliveira, Univ. of Missouri; Earl Vories, USDA-ARS, Cropping Systems & Water Quality Res. Unit; David Dunn, University of Missouri; William Stevens, University of Missouri
9:00 AM
Potential for Fine-Tuning Rates of Nitrogen Using in-Crop Applications of Nitrogen Based on Greenseekertm Readings in Spring Cereals on the Canadian Prairies.
Guy Lafond, Agriculture & Agri-Food Canada; Chris B. Holzapfel, Indian Head Agricultural Research Foundation; Byron Irvine, Agriculture and Agri-Food Canada; Malcolm Morrison, Agriculture and Agri-Food Canada; Dean James, AAFC – Semiarid Prairie Agricultural Research Centre; William May, Agriculture and Agri-Food Canada
9:15 AM
Developing Infrastructure for Implementing Adaptive Nitrogen Management Practices for Corn on a Large Scale in Iowa.
Tracy Blackmer, Iowa Soybean Association; Peter Kyveryga, Iowa Soybean Assoc.
9:30 AM
Implementing Adaptive Nitrogen Management Practices for Corn on a Large Scale: A case study in Iowa.
Peter Kyveryga, Iowa Soybean Assoc.; Tracy Blackmer, Iowa Soybean Association
9:45 AM
Binary Logistic Modeling to Spatially Predict the Probability of Soil Fertilizer Application Classes.
Adel Elprince, Alexandria University; Magda A. Hussien, Alexandria University
10:00 AM
10:15 AM
Best Management Practices of Tillage and N Fertilization of Winter Cereals in Mediterranean Semiarid Rainfed Conditions.
C. Cantero-Martínez, University of Lleida; J. Margalef, University of Lleida; F.J. Morell, University of Lleida; P. Angás, University of Lleida; Jorge Alvaro-Fuentes, University of Lleida
10:30 AM
Soil Nitrogen Conservation with Continuous No-Till Management of Grain Cropping Systems in the Virginia Coastal Plain.
John Spargo, USDA-ARS; Marcus Alley, Virginia Polytechnic Inst. & State Univ. (Virginia Tech); Ronald Follett, USDA-ARS; James Wallace, Colonial Soil & Water Conservation District
10:45 AM
Better Recommendation Systems for Nitrogen Fertilization of Corn.
Matias Ruffo, Univ. of Illinois; Matt Wiebers, Mosaic Crop Nutrition; Fred E. Below, Univ. of Illinois, Urbana-Champaign
11:00 AM
Evaluation of the Yield Potential Based Nitrogen Fertilization Optimization Algorithm in Cotton.
Daryl Arnall, Oklahoma State Univ.; Daniel Edmonds, Oklahoma State Univ.; Michael Daft, Monsanto; B.B. England, Oklahoma State Univ.; Randy Taylor, Oklahoma State Univ.; William Raun, Oklahoma State University
11:15 AM
Hungry Soils, Hungry People: Soil Management for Sustained Agricultural Production in Sub-Saharan Africa.
Samuel G.K. Adiku, University of Florida; James Jones, University of Florida
11:30 AM