2. Bias in Research

3. History of Yield Potential

2006 Class Project

4. Organic Carbon

Effects of elevated CO2 on plants
Climate Change, South Africa
Microbial Ecology and increased CO2
GCTE
FACE
USDA-FACE
Aspen-FACE

5. Nitrogen

6. Nitrogen Use Efficiency (Review)

7. Theoretical Applications

     R.A. Olson, Soil Testing

        MISSION II

8. Nitrogen Fertilization Optimization Algorithm and the use of CV's

CV-RI

Concept, CV-RI

9. Biometrical Applications
Stability Analysis

10.  Radioisotopes
supplemental lecture

    Radioisotope Exercise

Student Nutrient Cycles

First Hour Exam 2004

Second Hour Exam 2002

Statistical Applications

FINAL EXAM 2002, KEY

FINAL EXAM 2004, KEY

Cate-Nelson Exercise

YIELD FIT Program (exe file)

TEXT BOOK

Directions, May 8

PreLim Exam, Homework March 27, 2006

Yield Potential Example Table

http://www.nass.usda.gov/research/avhrr/avhrrmnu.htm

Nitrogen Rich Strip (on left), Jason Lawles, NTech Industries

video1
video2

Reading Assignments

Seasonal and long-term changes in nitrate-nitrogen content of well water in Oklahoma.  1997.  J. Environmental Quality, 26:1632-1637. (consult the actual article)

a.  The Story of Wheat (from the Economist.com)

b.  Use of Stability Analysis for Long-Term Soil Fertility Experiments.  Agron J. 85:159-167

Amino Sugar Papers

a.  Farm Journal
b.  Khan, Mulvaney, et al.
c.  Khan, Mulvaney, 2001 SSSAJ


1. Mid-Season Prediction of Wheat Grain Yield Potential Using Plant, Soil, and Sensor Measurements. J. Plant Nutr.

2. Magruder Plots, Nitrogen Balance following 109 years of continuous winter wheat

3. Optical Sensor Based Algorithm for Crop N Fertilization

4. Improving Nitrogen Use Efficiency in Cereal Grain Production with Optical Sensing and Variable Rate Application

5. Nitrogen Fertilization Optimization Algorithm Based on In-Season Estimates of Yield and Plant Nitrogen Uptake

6. Estimated land area increase of agricultural ecosystems to sequester excess atmospheric carbon dioxide

7. Estimated Increase in Atmospheric Carbon Dioxide Due to Worldwide Decrease in Soil Organic Matter.  Commun. Soil Sci. Plant Anal. 30:1713-1719

8.  Soil Plant Inorganic N Buffering (web link)

9.  Francis, D.D., J.S. Schepers, and M.F. Vigil. 1993. Post-anthesis nitrogen loss from corn. Agron. J. 85:659-663.

10. Ammonia Volatilization from Surface-Applied Urea: Effect of Hydrogen Ion Buffering Capacity (Soil Sci. Soc. Am. J. 48:578)

11. Reseeding the Green Revolution (Science)

12. The NO2-Flux Conundrum (Science)

13. Nitrogen Oxide Pollution May Spark Seeds' Growth (Science)

14. Global Population and the Nitrogen Cycle (Scientific American)

15. Forecasting Agriculturally Driven Global Environmental Change (Science)

16. Soil Fertility and Hunger in Africa (Science)

17. NSF Report Paints a Global Picture (Science)

18. Improving Nitrogen Use Efficiency for Cereal Production (Agron. J. 91:357-363)