Which of the following is a key factor affecting the quality of cotton fiber?

Micronaire is indeed a key factor affecting the quality of cotton fiber because it directly relates to the fineness and maturity of the fiber. Micronaire is a measure of the airflow through a plug of cotton and provides information about both the fiber's diameter and its maturity. A well-developed fiber tends to have a specific micronaire reading that is associated with higher quality, resulting in better spinning and dyeing properties. Fibers that fall outside the optimal micronaire range can indicate immature or overly mature fibers, which can negatively impact the yarn properties and the overall fabric quality.

The relationship between micronaire and fiber quality is essential for producers and manufacturers because it influences marketability and the end-use performance of cotton products. Understanding and monitoring micronaire helps in selecting the best cotton for specific applications, thus ensuring that the final product meets industry standards and consumer expectations.