Nitrogen Use Efficiency, Nitrogen Fertilizers, NUE, Nitrogen and the Environment
Oklahoma State University
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email: bill.raun@okstate.edu
brian.arnall@okstate.edu

Nitrogen use efficiency, improved methods of N fertilization for corn and wheat  Nitrogen Use Efficiency

Last update: January 27, 2010
Nitrogen facts
Nitrogen Use Efficiency Defined
Nitrogen Fertilizers
Nitrogen Deficiencies
Nitrogen Fertilization Methods
Nitrogen Cycle
Nitrogen Uptake in Corn and Wheat
Nitrogen and Weather
NUE Science Network
NUE in Corn, Wheat, and Rice
World Wheat, Corn, and Rice
Nitrate Critical Levels
AlteRNATIVE PRODUCT EVALUATION
DOWNLOADS

>50% NUE?
Our Approach
1. Resolution for Precision Agriculture
2. In-Season Prediction, Wheat Yield
3. In-Season Prediction, Corn Yield
4. Response Index
5. Nitrogen Fertilization Algorithm
6. Benefits of Using this Technology
7. Sensors Developed by OSU
8. Cotton Research
9. N Fertilization Approaches
10. Farmer Experiences and
Case Studies

Documentation
Journal Publications
VRT Application Equipment
Conferences and Workshops
Extension of the Concept
Library of Yield Prediction Equations
Society and Meeting Presentations
Undergraduate and Graduate Classes
New MS and Ph.D. in Precision Ag
 

 
FACT: Nitrogen use efficiency for cereal production in the world is 33%
FACT: 95,000,000 Mg of N fertilizer consumed each year in the world; 60% for cereal production
FACT: 20% increase in NUE is worth  >$25,863,741,747

New N Management
Extension

GreenSeeker Field Results

 NUE Tools
Sensor Based Nitrogen Rate Calculator, Topdress and Sidedress N rates for Corn and Wheat, Nitrogen management
Sensor Based Nitrogen Rate Calculator, on-line in 2002
How can the SBNRC Help You?
How do I get started using the GreenSeeker Technology
I'm interested in improving how I use N fertilizer, what can I do?

Ramp Calibration Strips for improved mid-season fertilizer N rate recommendations
Don't apply more N than you need
Apply for Graduate School at Oklahoma State University in Precision Agriculture
Advanced Training in Applied Precision Agriculture
Collaborative Research with USDA-ARS
Mesonet Files
Iowa State University, NSTL
University of Nebraska, USDA-ARS

Collaborative Projects
Sub Saharan Africa
Phosphorus Use Efficiency
Phosphorus Indicator Plants
Kansas State University
INTA Argentina
CIMMYT/Patronato Sonora, Mexico
Virginia Tech
North Dakota State University
Australia
Chinese National Academy of Sciences
CIMMYT, India
Saskatchewan, Canada
82 OSU Graduate Students Have Now Worked with CIMMYT in Mexico, Turkey, China, Argentina, India, Russia, and Uzbekistan
  Causes of Plant to Plant Variability in Yield within Corn Production Systems By plant corn nitrogen management for improved nitrogen use efficiency International Programs in Sensor Based Nitrogen Management
GreenSeeker Sensor activities around the world
Use of sensor CV's for improving mid-season Nitrogen Rate Recommendations
Can sensor CV's assist in refining fertilizer N?

 

Precision Sensing Equipment Developed at Oklahoma State University
Precision Ag Equipment
 

 

 		Free Hats for Farmers Putting out Nitrogen Rich Strips
N Rich Strip Hats FREE for Farmers
By-Plant Yield Prediction in Corn Production Systems
Predicting By-Plant Corn Yields		 Hand Held GreenSeeker Sensors
Hand-Held GreenSeeker Sensors		 Nitrogen Use Efficiency, Facts and Figures
NUE Facts and Figures

International Maize and Wheat Improvement Center (CIMMYT) in Mexico City
NTech Industries Inc.
Oklahoma State University
 Oklahoma State University

The Hunger Site

If these were our children, wouldn't we be doing more?

 

Trimble purchases NTech Industries

Dr. Norman Borlaug endores the GreenSeeker N Management Approach for wheat and corn production

  Oklahoma Soil Fertility Handbook, 2006
OSU Soil Fertility Handbook		 Long Term Soil Science Fertilizer Experiments
OSU Long-Term Experiments		 Bed Planting Production Systems for Spring Wheat and Winter Wheat
Bed Planting Wheat
How to increase nitrogen use efficiency in corn and wheat production systems, N use efficiency
How to increase nitrogen use efficiency in cereals		 Web Sites Developed in addition to NUE Regional Precision Agriculture Trial for 2005
Collaborative Research Program for Corn Production

VRT Trials, 2002-2005 and RESOLUTION 2004


Field Scale VRT Trials 2003


OFIT Trials


MEXICO 2002 Results


General NFOA Presentation


 Corn Research

 

OSU 2009 Research Program

 

Contributors

 
Feeding Our World

 

Hit Counter

 
Research Highlights: Precision Sensing Technologies for Improved Nitrogen Use Efficiency in Corn and Wheat Production Systems 

What Farmers Have to Say about GreenSeeker

Discovery Channel Producer Jenn Sunnerton Visits OSU and the Precision Ag Team