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Corn Harvest Quality Report 2017/2018

Contents

  1. Harvest Quality Highlights
  2. Introduction
  3. Quality Test Results
  4. Grade Factors
  5. Moisture
  6. Chemical Composition
  7. Physical Factors
  8. Stress Cracks
  9. 100-Kernel Weight
  10. Kernel Volume
  11. Kernel True Density
  12. Whole Kernels
  13. Horneous (Hard) Endosperm
  14. Mycotoxins
  15. Assessing the Presence of Aflatoxins and DON
  16. Background: General
  17. Background: Aflatoxins
  18. Background: Don (Deoxynivalenol) Or Vomitoxin
  19. Crop and Weather Conditions
  20. Planting and Early Growth Conditions
  21. Pollination and Grain Fill Conditions
  22. Harvest Conditions
  23. Comparison of 2016 to 2015, 2014, and 5YA
  24. U.S. Corn Production, Usage and Outlook
  25. U.S. Corn Production
  26. U.S. Corn Use and Ending Stocks
  27. Outlook
  28. Survey and Statistical Analysis Methods
  29. Overview
  30. Survey Design and Sampling
  31. Statistical Analysis
  32. Test Analysis Methods
  33. Corn Grading Factors
  34. Moisture
  35. Chemical Composition
  36. Physical Factors
  37. Mycotoxin Testing
  38. U.S. Corn Grades and Conversions
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U.S. Corn Grades and Conversions

U.S. Sample Grade is corn that: (a) Does not meet the requirements for the grades U.S. Nos. 1, 2, 3, 4, or 5; or (b) Contains stones with an aggregate weight in excess of 0.1 percent of the sample weight, 2 or more pieces of glass, 3 or more crotalaria seeds (Crotalaria spp.), 2 or more castor beans (Ricinus communis L.), 4 or more particles of an unknown foreign substance(s) or a commonly recognized harmful or toxic substance(s), 8 or more cockleburs (Xanthium spp.), or similar seeds singly or in combination, or animal filth in excess of 0.20 percent in 1,000 grams; or (c) Has a musty, sour, or commercially objectionable foreign odor; or (d) Is heating or otherwise of distinctly low quality.


Source: Code of Federal Regulations, Title 7, Part 810, Subpart D, United States Standards for Corn U.S. AND METRIC CONVERSIONS
Conversions