Weather, Crop Seasons, Maturities

Back to Dale Farnham's Homepage

Table of Contents
Author: Agronomy Department
Email: x1farnha@exnet.iastate.edu
Home Page: http://extension.agron.iastate.edu

  1. Weather, Crop Seasons, Maturities

  2. Crop Weather

  3. Components of Weather

  4. Components of Weather Temperature

  5. Components of Weather Temperature

  6. Components of Weather Temperature

  7. Components of Weather Temperature

  8. Components of Weather Temperature

  9. Growing Degree Days (GDD or GDU)

  10. Growing Degree Days (GDD or GDU)

  11. GDD Calculation Example

  12. GDD Calculation Example

  13. GDD Calculation Example Why use Base 50?

  14. PPT Slide

  15. 1997 GDU Shortfall May 1 thru September 28

  16. Central Iowa GDUs 1997

  17. Components of Weather Temperature

  18. Components of Weather Temperature

  1. Components of Weather Moisture

  2. Cropping Systems Based on Annual Precipitation

  3. Water Use By Corn Central Iowa, April thru October

  4. Iowa Annual Rainfall

  5. Water Use By Corn

  6. Components of Weather Moisture

  7. Components of Weather Moisture

  8. Components of Weather Moisture

  9. Components of Weather Moisture

  10. Drought Stress

  11. Components of Weather Moisture

  12. Excess Moisture

  13. Growing Season

  14. Effect of Early Frost on Corn

  15. Hybrid Maturity

  16. Hybrid Maturity

  17. Hybrid Maturity

  18. Maturity Rating Systems