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3 edition of Effects of fiber length uniformity on processing Pima cotton found in the catalog.

Effects of fiber length uniformity on processing Pima cotton

United States. Science and Education Administration

Effects of fiber length uniformity on processing Pima cotton

by United States. Science and Education Administration

  • 43 Want to read
  • 39 Currently reading

Published by Dept. of Agriculture, Science and Education Administration : for sale by the Supt. of Docs., U.S. Govt. Print. Off in [Washington] .
Written in English

    Subjects:
  • Cotton yarn.,
  • Spinning.

  • Edition Notes

    Issued Jan. 1979.

    Statementby Carl V. Feaster ... [et al.] ; prepared by Science and Education Admininstration.
    SeriesProduction research report ; no. 176, Production research report -- no. 176.
    ContributionsFeaster, Carl Vance, 1921-
    The Physical Object
    Pagination11 p. ;
    Number of Pages11
    ID Numbers
    Open LibraryOL17818857M

    predict, prevent, or avoid low-quality cotton fibers that cause processing defects in yarn and fabric must address the interface between cotton production and cotton processing. Every bale of cotton produced in the USA crosses that interface via the USDA-AMS classing offices, which report bale averages of quantified fiber properties. Sample Processing 5 Classing Methodology 5 Dissemination of Data 5 III. Classification of Upland Cotton 7 A. Instrument Determinations 7 Fiber Length 7 Length Uniformity 8 Fiber Strength 8 Micronaire 9 Color 11 Trash 11 B. Classer Determinations 13 Color Grade 13 Leaf Grade 15 Preparation 16 Extraneous matter

    Indeed, the profound and diverse effects of growth environment on cotton physiology are mentioned or implied in the title of every chapter in Physiology of Cotton. Bulk fiber yields have been used as the benchmark for treatment success, and environment-related yield components have been discussed. Start studying TAM Mizzou. Learn vocabulary, terms, and more with flashcards, games, and other study tools.

    Background. Cotton is the most important natural fiber crop which supports a multi-billion dollar production and processing industry [1, 2].The cotton genus (Gossypium L.) consists of about 45 diploid species belonging to eight genome groups (A-G and K) and 5 allotetraploid (AD) species [3, 4].Within the Gossypium genus, two of the five tetraploid species (2n = 4x = 52; G. barbadense L. and G. 18 hours ago  The nonexpressor of pathogenesis-related 1 (NPR1) family plays diverse roles in gene regulation in the defense and development signaling pathways in plants. Less evidence is available regarding the significance of the NPR1-like gene family in cotton (Gossypium species). Therefore, to address the importance of the cotton NPR1-like gene family in the defense pathway, four Gossypium .


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Effects of fiber length uniformity on processing Pima cotton by United States. Science and Education Administration Download PDF EPUB FB2

Additional Physical Format: Online version: Effects of fiber length uniformity on processing Pima cotton. Washington, D.C.: U.S. Dept. of Agriculture, Science and. A genetic stock, E‐2, of ‘Pima’ cotton (Gossypium barbadense L.), differs from commercial cultivars of Pima in that the leaves, stems, and fruit (boll) surfaces are densely pubescent, and the fiber i Author: Joshua A.

Lee. Effects of fiber length uniformity on processing Pima cotton / By United States. Science and Education Administration and Carl Vance Feaster.

Fiber length (FL, inches) was reported in hundredths of inches, and was measured for % span length (upper half mean or UHM) with a digital fibrograph. Fiber uniformity (UI, %) was measured and calculated as the ratio of the average length of all fibers to the average length of the longest 50 percent of the fibers in the : Abdelraheem Abdelraheem, Nicholas Adams, Jinfa Zhang.

Pima cotton was grown in 20/12, 25/17, 30/22, 35/27, and 40/32°C day/night temperature cycles in sunlit controlled-environment chambers soon after emergence to 64 d under optimum water and. Chromosomes 1, 4, and 18 from the three species generally showed negative additive effect on lint yield compared with cultivars.

Chromosome 1 from Hawaiian cotton had greater additive effects on fiber length than homologs. Chromosomes 1 and 4 from Pima cotton showed greater additive effects on fiber strength than homologs. Classification procedures for American Pima cotton are similar to those for American Upland cotton, including the use of HVI measurements.

Quality and Reliability of Classification Data The reproducibility of cotton classing results from one USDA facility to another is the measure used to determine the reliability of the data produced. Cotton, a worldwide crop that is valued at $20 billion, is the premiere natural fiber for textiles.

As cotton fiber consumption continues to increase, the crop is becoming a major importance to the economies of both developed and developing countries.

Table 7 — Textile mill use of fiber properties related to ownership of associated fiber testing instruments, /30 1/ Firms owning Firms instruments to Fiber property using property measure property: Percent Fineness and maturity: Length: Length uniformity: Strength: Grade 2/:   Length parameters of cotton fibers.

Definition of length is based on two criteria- one based on its ‘full length’ i.e. end to end lengths (staple length, ML, EL, UHML,UQL) and the other based on ‘span length’(% span length,50% span length, ML & UHML).

Mean length: It is the arithmetic mean of the length of all the fibers present in a sample of the cotton. Cotton fiber is the world’s most important natural textile fiber. In the U.S.A. incotton fiber had a 61% share of the market for apparel and home textiles (Bearden, ), with syn-thetic fibers having most of the remaining market share.

A similar demand for renewable cotton fiber occurs worldwide. the relationships between processing costs and fiber quality. Along with traditional grade and staple information, the cotton industry now uses measurements of fiber fineness and maturity, length uniformity, strength, and nonlint content of the sample to describe fiber quality.

Cotton quality determination has now. Fiber length is largely determined by variety, but the cotton plant's exposure to extreme temperatures, water stress, or nutrient deficiencies may shorten the length. Excessive cleaning and/or drying at the gin may also result in shorter fiber length.

Fiber length affects yarn strength, yarn evenness, and the efficiency of the spinning process. A cotton fiber typically exhibits natural crimp, which is important for fibers to be adhered together during processing.

1, 2, 10, 16 As a result, the initial loading of the fiber in single-fiber strength tests can be fully consumed in removing this crimp, leading to initial over-estimation of the inherent fiber.

Length uniformity or uniformity ratio is determined as " a ratio between the mean length and the upper half mean length of the fibers and is expressed as a percentage". FIBER PROCESSING.

With a fibre length of mm Pima cotton is recognized as the world’s longest cultivated cotton fibre. A unique cotton term related to fiber maturity and fineness (diameter).

Micronaire, however, is a unit-less value. It’s the measurement of airflow resistance through a gram fiber specimen that is compressed to a specific volume. Micronaire can be converted to approximate denier value by dividing micronaire value by Cotton Fiber Length.

Introduction Textile fibers have been used to make cloth for several thousand years. First manufactured fiber was produced commercially on and was produced from fibers of plants and animals. Wool, flax, cotton and silk were commonly used textile fibers.

Textile fibers are characterized by the flexibility, fineness and large length in relation to the. A single pound of cotton may contain million or more individual fibers. Each fiber is an outgrowth of a single cell that develops in the surface layer of the cotton seed.

During early stages of its growth, the fiber elongates to its full length as a thin-walled tube. As it matures, the. Ring spinning is the oldest type of fiber spinning still in use. The process takes a fiber mass (roving), reduces the mass through fiber drafting, inserts twist for strength, and winds the yarn onto a bobbin.

Even today, ring spinning makes the widest range of yarn counts with the highest strength. TEXTILE TECHNOLOGY The Effect of Bale Ageing on Cotton Fiber Chemistry, Processing Performance, and Yarn Quality Article (PDF Available) January.

Cotton is a soft, fluffy staple fiber that grows in a boll, or protective case, around the seeds of the cotton plants of the genus Gossypium in the mallow family fiber is almost pure natural conditions, the cotton bolls will increase the dispersal of the seeds.

The plant is a shrub native to tropical and subtropical regions around the world, including the Americas.Reynolds, E. B., and Stansel, R. H. Effect of fertilizers on the length of cotton fiber.

Amer. Soc. Agron. Jour. 27(5): May 4 Am34P "In previous work to determine the effect of fertilizer on length of fiber, the application of phosphoric acid to cotton on a soil that responds readily to phosphoric acid apparently increased the.Upland cotton (Gossypium hirstum L.), which produces more than 95% of the world natural cotton fibers, has a narrow genetic base which hinders progress in cotton ucing germplasm from exotic sources especially from another cultivated tetraploid ense L.

can broaden the genetic base of Upland cotton. However, the breeding potential of introgression lines (ILs) in Upland.