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Abstract
INTRODUCTION
Locally, cotton is grown in a large area, from south to north. Environmental conditions may vary from one location to another and from year to year in the same area. Thus the evaluation of commercial varieties as well as the newly released or promising varieties in yield trials in different locations and in different years is of great importance for the cotton quality.
In today’s highly competitive and global textile market, product quality has become of paramount importance in order to produce high-quality cotton yarns which in turn produce high quality woven and knitted fabrics and end products, emphasis must be
placed on the quality and processing of cotton fibers. .
There is a direct correlation between the quality of raw material and the end products. The lower quality of cotton fibers means the lower quality of yarn produced from such raw material. High quality cotton blends are superior with respect to properties such as length, fineness, elongation, and brightness, sufficiently mature and without any trash particles and displaying a high capacity of spinning consistency.
Cotton is classed to determine its grade, which indicates the spinning value and utility, and hence the market value or price. Farmers are interested in the class:5.cation of cotton by grade to evaluate production, harvesting, and ginning practices, in order to market their cotton profitably. On the other hand, merchants could efficiently buy and sell cotton in accordance with the staple length, grade, besides the micronaire reading.
From the spinner’s point of view, the reasonable uniformity in quality of cotton in terms of grade is essential and required to attain even-running of cotton in processing and produce yarns of satisfactory performance.
Development in spinning and testing technology necessitate the evaluation of a more effective method for determining the actual value of the cotton based on the value of its inherit characteristics that contribute to the quality of the yarn and textile products made from it.
The market value of the fibers should reflect the technological value of cotton and establishing such value is extremely useful for both cotton users and producers.
Its worth to say that, cotton producers in Egypt are still in need for the visual classification, as it is suitable for application in the local marketing system, as producers sells seed cotton. While using the fiber quality index (FQI) comes in a following step, as it is suitable to follow up the international marketing system, as traders sells lint cotton.