132 Nitrogen Management to Improve Use Efficiency and Crop Yield

Oral Session
S04 Soil Fertility & Plant Nutrition Nitrogen applied to soils is not fully utilized by crops due to various loss mechanisms and transformations to form unavailable to plants. Information will be presented on improving nitrogen agronomic efficiency.


Nutrient Management & Soil & Plant Analysis
Monday, October 22, 2012: 1:00 PM-3:35 PM
Duke Energy Convention Center, Room 208, Level 2

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Antonio P. Mallarino
Kipling Balkcom
1:05 PM
Gross Nitrogen Transformations, 15N assimilation and Recovery at the Tree Scale.
Daniel L. Schellenberg, University of California; Saiful Muhammad, University of California; Patrick H. Brown, University of California; David R. Smart, University of California
1:20 PM
Identifying N-Responsive Fields of First-Year Corn After Alfalfa.
Matt A. Yost, University of Minnesota; Michael Russelle, USDA-ARS; Jeffrey Coulter, University of Minnesota
1:35 PM
Nitrogen Management for Corn After Alfalfa: Current Practices and Opportunities.
Jeffrey Coulter, University of Minnesota; Matt A. Yost, University of Minnesota; Michael Russelle, USDA-ARS; Mae A. Davenport, University of Minnesota; Paul Porter, University of Minnesota
1:50 PM
Nitrogen Use Efficiency of Furrow-Irrigated Corn in Arkansas.
Trenton Roberts, University of Arkansas; Richard Norman, University of Arkansas; Nathan Slaton, University of Arkansas; Jason Kelley, University of Arkansas Division of Agriculture Extension; Leonel Espinoza, University of Arkansas
2:05 PM
Predicting Risk of Reducing Nitrogen Fertilization Using Hierarchical Models and On-Farm Evaluation Data.
Peter Kyveryga, Iowa Soybean Association; Petrutza C. Caragea, Iowas State University; Mark Kaiser, Iowas State University; Tracy M. Blackmer, Iowa Soybean Association
2:20 PM
2:35 PM
Building Uncertainty Into N Recommendations for Maize: Addressing Insurance Applications.
Harold van Es, Cornell University-Crop & Soil Sciences; Jeff Melkonian, Cornell University; Bianca Moebius-Clune, Cornell University; Christopher Graham, Cornell University; Cindy L. van Es, Cornell University
3:05 PM
Nitrogen Uptake, Distribution, and Utilization in Hard Red Spring Wheat Varieties.
Bhupinder S. Farmaha, University of Minnesota; Albert L. Sims, University of Minnesota; Jochum J. Wiersma, University of Minnesota
3:20 PM
Effect of Seed Distribution and Population On Maize (Zea mays L.) Grain Yield.
Bee Khim Chim, Oklahoma State University; Emily Rutto, Oklahoma State University; Jeremiah Mullock, Oklahoma State University; Guilherme M. Torres, Oklahoma State University; Jacob Bushong, Oklahoma State University; Sulochana Dhital, Oklahoma State University; Natasha E. Macnack, Oklahoma State University; William Raun, Oklahoma State University
3:35 PM