Upland cotton

Table 2. Molecular Weights of Upland Cotton Varieties ...

Akey DH, Hennenberry TJ. 1998. Control of silverleaf whitefly with the entomopathogenic fungi, paecilomyces fumosoroseus and Beauveria bassiana in upland cotton in Arizona. Proceedings of the Beltwide Cotton Conference 2 1073-1077. 

UOP FCC unit, 11 700-702 UOP/HYDRO MTO process, 18 568 UOP Olex olefin separation process, 17 724 Up-and-Down Method, 25 217 U/Pb decay schemes, 25 393-394 Updraft sintering, 26 565 Upflow anaerobic sludge blanket (UASB) in biological waste treatment, 25 902 Upgraded slag (UGS), 25 12, 33 Upland Cotton, U.S., 8 13 U-Polymer, 20 189 Upper critical solution temperature (UCST), 20 320, 322 Upper explosive limit (UEL), 22 840 Upper flammability limit, 23 115 Upper flammable limit (UFL), 22 840 Upper Freeport (MVB) coal... 

Teroenes in G. barbadense and Upland race stocks. Different cultivars of Upland cotton have similar profiles of volatile terpenes, but barbadense and certain insect-resistant Texas race stocks of G.. hirsutum (15 - 17) have profiles different from the cultivars. 1. barbadense lacks myrcene, y-bisabolene and B-bisabolol, which are major components in cultivated Upland cotton, but it has greater concentrations of a-copaene (18 Table II). 

Gossypium hirsutum, a tetraploid, has been developed in the United States from cotton native to Mexico and Central America and includes all of the many commercial varieties of American Upland cotton. Upland cottons now provide over 90%i of the current world production of raw cotton fiber. The lengths, or staple lengths, of the Upland cotton fiber vary from about I to l in. (22-36 mm), and the micronaire value (an indicator of fiber fineness and maturity but not necessarily a reliable measure of either see Chapter 8) ranges from 3.8 to 5.0. If grown in the United States, G. hirsutum lint fibers are 26-30 mm (1 to 1-3/16 in.) long [20]. Fiber from G. hirsutum is widely used in apparel, home furnishings, and industrial products. 

Saw-ginned cottons (Upland cottons) are classed on a different system than roller-ginned cottons (longer-staple fibers and the very short Asiatic desi cottons). 

The present HVI system as developed in the United States has been used principally for marketing of the U.S. cotton to the U.S. textile industry. With the disappearance of the U.S. textile industry there has been an impetus toward the standardized testing of cotton on a global basis [604]. The concern is that HVI measurements of length, strength, fineness, color, and trash were probably sufficient for marketing Upland cotton to an industry concentrating... 

The official cotton standards of the United States for the grade of Upland cotton are also called the universal standards. Leading cotton associations in major cotton-consuming countries meet periodically to establish a continuing consensus of cotton classification. International conferences are held every 3 years in the United States to consider revisions and to ensure accurate reproduction of the standards. By this method, the U.S. cotton classification system maintains sensitivity and responsiveness to cotton consumer needs. 

The Upland cotton is naturally white in color when it opens under normal growing conditions in the field. A number of factors influence changes in its color after the cotton has opened. 

Stipanovic, R. D., Altman, D. W., Begin, D. L., Greenblatt, G. A., and Benedict, J. H. (1988). Terpenoid aldehydes in upland cottons Analysis by aniline and HPLC methods.. Agric. Food Chem. 36, 509-515. 

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