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Title: Field to Fabric research program
Authors: Roberts, Grant
Keywords: cotton ginning
comparaison of post ginning fibre quality to USA
opportunity to position Australian cotton
Ginner's Paradox
Nep content
cotton moisture and heating levels
growing decisions impacts
cotton quality post harvest
length attributes
cleanliness and appearance
performance in the hands of the industrial buyer (
Issue Date: 30-Jun-2003
Publisher: University of Southern Queensland
Series/Report no.: ;NEC7C
Abstract: The main recommendation arising from six and a half years of research into how to gin cotton with an emphasis on quality relates to practices outside of ginning, rather than ginning itself. The research in part produced a rigorous comparison of Australian cotton against cotton from a similar industry (USA). We lost. While Australian cotton had several good attributes, it was shown to be appreciably higher in Nep content. Other individual studies showed the quality aspects of UNR cotton, of combinations of cotton moisture and heating levels, and the relevant importance of a wide range of quality attributes of lint in predicting a wide range of quality attributes of yarn and fabric. Initial work was also carried out into how much decisions taken during growing, affect cotton quality post harvest. The main outcome of this research is to show that there is a Ginner's Paradox. There are two main groups of quality attributes for cotton lint. The first group is concerned with cleanliness and appearance (leaf, colour where weathering is not an issue, preparation, etc). The second group relate to performance in the hands of the industrial buyer (several length attributes, plus Neps and immature fibre content). The former affect bale price strongly, but quality in the hands of the industrial buyer little or not at all, where as the latter affect quality in the hands of the industrial buyer strongly but bale price little or not at all. The paradox for the ginner is that he can gin for best results in one or other of these groups of attributes, but not both. Current classing practice emphasizes the former, but punishes or ignores the latter. For pragmatic reasons, ginning practice follows classing practice. The end result is that an opportunity to produce a step upwards in quality across the Australian industry is going begging. Those classing practices must change before the results of this research can be adopted.
Appears in Collections:2003 Final Reports

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