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2015/2016 Sorghum Harvest and Export Quality Report

Contents

  1. Harvest Quality Highlights
  2. Export Quality Highlights
  3. Introduction
  4. Harvest Quality Test Results
  5. Moisture
  6. Physical Factors
  7. Mycotoxins
  8. Export Quality Test Results
  9. Moisture
  10. Chemical Composition
  11. Physical Factors
  12. Mycotoxins
  13. Crop and Weather Conditions
  14. Planting and Early Growth Conditions
  15. Late Vegetative and Mid-Pollination Conditions
  16. Maturity and Harvest Conditions
  17. Comparison of 2015 to 2010-2014
  18. U.S. Sorghum Export System
  19. U.S. Sorghum Export Flow
  20. Impact of the Sorghum Market Channel on Quality
  21. U.S. Government Inspection and Grading
  22. U.S. Sorghum Production, Usage and Outlook
  23. U.S. Sorghum Use and Ending Stocks
  24. Outlook
  25. Harvest Survey and Statistical Analysis Methods
  26. Survey Design and Sampling
  27. Statistical Analysis
  28. Export Survey and Statistical Analysis Methods
  29. Survey Design and Sampling
  30. Statistical Analysis
  31. Testing Analysis Methods
  32. Sorghum Grading Factors
  33. Moisture
  34. Chemical Composition
  35. Physical Factors
  36. Mycotoxin Testing
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X. EXPORT SURVEY AND STATISTICAL ANALYSIS METHODS

A. Overview

The key points for the survey design and sampling and statistical analysis for this 2015/2016 Export Cargo Survey are as follows:

  • Samples were proportionately stratified according to Export Outlet (EO) – Texas and NOLA.
  • To achieve a maximum ± 10% relative margin of error (Relative ME) for the U.S. Export Aggregate level and to ensure proportional sampling from each EO, the targeted number of total samples was 167 samples, with 132 to be collected from Texas and 35 to be collected from NOLA.
  • Samples were provided by the U.S. Department of Agriculture’s (USDA) Federal Grain Inspection Service (FGIS) field offces at ports in the respective EOs.
  • Export inspections of shipments generated 136 samples from the Texas EO and 46 samples from the NOLA EO. Since the number of samples collected in each EO was in excess of the targeted number of samples, the U.S. Export Aggregate averages for the quality factors were weighted according to the targeted proportion by EO.
  • To evaluate the statistical validity of the number of samples surveyed, the Relative ME was calculated for each of the quality attributes at the U.S. Export Aggregate level. The Relative MEs for the quality factor results were all less than ± 10%.