Table 1 Classification of cotton based on fiber traits
Trait | Classification | Description |
|---|---|---|
Upper half mean length /mm | Short staple | ≤ 20.0 |
Medium staple | 20.5–24.5 | |
Medium long staple | 25.0–27.0 | |
Long staple | 27.5–32.0 | |
Extra long staple | ≥ 32.5 | |
Fiber strength /(cN·tex-1) | Very Strong | ≥ 31.0 |
Strong | 29.0–30.0 | |
Average | 26.0–28.0 | |
Intermediate | 24.0–25.0 | |
Weak | ≤  23.0 | |
Micronaire | Very fine | < 3.0 |
Fine | 3.0–3.9 | |
Average | 4.0–4.9 | |
Coarse | 5.0–5.9 | |
Very coarse | > 6.0 |