Abstract
The methods of optical particulate analysis and cotton colorimetry were jointly employed to explore the interrelated contribution of non-lint trash and lint color as these factors influence the classer's subjective recognition of grade. The nature of the correspondence between objective and subjective trash rankings was analyzed and discussed as it relates to the classer's ability discriminate between adjacent grade levels of cotton. Based on optically measured non-lint content, numerical grade intervals were formulated for the purpose of quantitatively categorizing cotton samples according to trash level and color. The validity of grade disposition by optical-image analysis was assessed as it compared with the classer's perception of grade for a selected sampling of cottons.
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