TECHNOLOGICAL CHANGES IN NUTRIENT MANAGEMENT

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TECHNOLOGICAL CHANGES IN NUTRIENT MANAGEMENT

• K. Freeman, R. Teal, C. Mack, K. Martin, B.
  Arnall, K. Desta, S. Moges, B. Tubana, Byungkyun,
  Chung, Olga Walsh, J. Solie, M. Stone, H. Zhang,
  S. Deng, G. Johnson,A. Klatt, B. Raun

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Assistance

• DASNR Administration
• Dept. Heads
• Colleagues
• Students

Sense of Urgency
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CIMMYT
Ciudad Obregon
Mexico City
4
USA Collaboration

• OSU, Variable Rate Technology USDA-ARS South
  Dakota
• John Solie, Marvin Stone, Gordon Johnson
  Shannon Osborne
• University of Minnesota USDA-ARS Nebraska
• John Lamb, Gyles Randall J. Schepers, D.
  Francis
• North Dakota State University USDA-ARS Iowa
• Dave Franzen, Jay Goos Jerry Hatfield
• Colorado State University USDA-ARS Maryland
• Raj Khosla John Meisinger
• Kansas State University USDA-ARS Missouri
• Alan Schlegel N. Kitchen, K. Sudduth
• University of Nebraska Texas AM
• Richard Ferguson Kevin Bronson
• Virginia Tech University Idaho State University
• Steve Phillips Bryan Hopkins, J. Elsworth
• Wade Thomason
• North Carolina State University Univ. of Illinois
• John Havlin Bob Hoeft
• Ohio State University Univ. of Kentucky
• Robert Mullen Greg Schwab

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International Collaboration

• CIMMYT
• Ciudad Obregon, Mexico, Ivan Ortiz-Monasterio
• El Batan, Mexico, Ken Sayre
• New Delhi, India, Raj Gupta
• Ecuador, Hugo Vivar
• Mexico
• UNAM
• Agric. Canada
• Nicolas Tremblay
• INTA, Rosario Argentina
• Ricardo Melchiori
• AAPRESID, Buenos Aires, Argentina
• Agustin Bianchini
• OSU, Nigeria
• Mike Kizer, Ron Elliott
• Chinese National Academy of Sciences
• Cheng Yisong, Hailin Zhang

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OSU Collaboration

• Canola
• Tom Peeper
• Forage Yield Prediction
• Jeff Edwards
• Sensor Based Technology for Plant Breeding
• Art Klatt, Brett Carver
• Sensor Based N Rate Calculator
• Hailin Zhang
• Long-Term Trial Evaluation
• Shiping Deng

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• Crop Nitrogen Algorithm Workshop
• 2003 (40)
• 2004 (60)
• Regional Trial

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Student International Work
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• MAJOR ADVISOR
• Country Degree Completion Date
• Attefat, Mehdi Iraq M.S 1992
• Ascencio, Edgar Noel. El Salvador M.S. 1992
• Sembiring, Hasil. Indonesia M.S. 1993
• Jojola, Michael E. USA M.S. 1994
• Ascencio, Edgar Noel. El Salvador Ph.D. 1995
• Kanampiu, Fred Kenya Ph.D. 1995
• Gavi-Reyes, Francisco Mexico Ph.D. 1995
• Ball, Jeff B. USA M.S. 1995
• Phillips, Steven B. USA M.S. 1995
• Taylor, Shannon L. USA M.S. 1996
• Chen, Jing China M.S. 1997
• Keahey, Dale, Alan. USA M.S. 1997
• Lees, Heather, L. USA M.S. 1997
• Sembiring, Hasil Indonesia Ph.D. 1997
• Thomason, Wade USA M.S. 1998
• Lukina, Erna V. Uzbekistan M.S. 1998
• LaRuffa, Joanne M. USA M.S. 1999

37 Completed Degrees
10 Current Graduate Students
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ExtensionField Days
Cherokee, OK, Feb 2004Ponca City, OK, Feb
2004Efaw, Feb 2004Covington, Mar 2004
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Field trials

• 10 trials using 60-ft boom sensor-applicator.

• Web site.
• http//www.nue.okstate.edu

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CCA Extension Workshops

• 1998, 2000, 2002, 2004

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Teaching

• Soil Plant Nutrient Cycling and Environmental
  Quality (graduate students)
• Precision Agriculture (undergraduate and graduate
  students)
• Soil Nutrient Management (undergraduate and
  graduate students)

Fall, even years
Spring, every year
Fall, every year
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Research Focus
4 Approaches for Increased NUE Sensor based
(temporal and spatial) VRT applicator Sensor
based (temporal) GreenSeeker Hand-Held Sensor
Based N Rate Calculator (Hand-Held) Automated
Calibration Stamp, N Rich Strip
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Potash Phosphate Institute
Predicting nutrient removal
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NDVI at F5

INSEY
Days from planting to sensing, GDDgt0
Winter Wheat
Units N uptake, kg ha-1 day-1 GDDgt0
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By Plant N Management
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CORN
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Yield Prediction Equations
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By Plant Yield Differences
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Kyle Freeman
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Kyle Freeman, Kent Martin, Roger Teal, Brian
Arnall
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Brian Arnall
CV from NDVI Readings
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NDVI 0.4CV ?
NDVI 0.4CV ?
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Response Indexvariable from year to year in the
same field
2004 RI 1.7
1995 RI 1.2
Long term N-P-K Experiments(1969-2004) Dr. Billy
Tucker
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Response to Fertilizer NLong-Term Wheat
ExperimentLahoma, OK 1970-2003
G. V. Johnson, R.L. Westerman, B. Tucker
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Response to Fertilizer N
Response to Fertilizer N
Long-Term Corn Experiment
Mead, NE, 1969
-
1983
Mead, NE, 1969
-
1983
Prof. R.A. Olson
Prof. R.A. Olson
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CalibrationStamp
29
lb N / acre
80
0
0
20
100
60
0
40
0
Blue Dye, 30 ml L-1
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Pumpless pressurized spray system19L auxiliary
air tank11.3L Spartanburg stainless steel
tankProgrammable logic controllerRemcor
solenoid valves
Automated Calibration Stamp
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Winter WheatCalibration Stamp applied in
DecemberVisual Interpretation in March
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December
CalibrationStamp
March
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http//www.soiltesting.okstate.edu/SBNRC/SBNRC.php

www.nue.okstate.edu
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N Rich Strip (J. Lawles, S. Reed)NTech
Industrieswww.ntechindustries.com
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gt15 readings 0.4m2 /- 0.005
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• Current Thinking

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RI-CV
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• Current Research
• CV from NDVI readings (plant stand)
• Plant Height, measured with sonar
• Biomass (NDVI) times Height (Sonar)
• Improved mid-season yield prediction
• Variable RI (estimated using NDVI)