Variability associated with testing cottonseed for aflatoxin |
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| Authors: | T. B. Whitaker M. E. Whitten R. J. Monroe |
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| Affiliation: | (1) ARS, USDA, North Carolina State University, Box 5906, 27607 Raleigh, North Carolina;(2) ARS, USDA, 20705 Beltsville, Maryland;(3) North Carolina State University, 27607 Raleigh, North Carolina |
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| Abstract: | The sampling, subsampling, and analytical variance associated with testing cottonseed for aflatoxin were estimated by use
of 4.54 kg samples, 100 g subsamples, and the Velasco method of analysis. Regression analysis indicated that each of the above
variance components is a function of the concentration of aflatoxin in the populations tested. Functional relationships are
presented to determine the sampling, subsampling, and analytical variance for any size sample, subsample, and number of analyses.
Paper 4821 of the Journal Series of the North Carolina Agricultural Experiment Station, Raleigh, NC 27607. |
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