Table 2 Qualitative and quantitative descriptors used in the characterization of white cotton samples collected from native Amazonian communities in La Convención, Cusco, Perú
Descriptor | Description qualitative | Description quantitative | Reference |
|---|---|---|---|
Fiber length/mm | Short fiber | ≤ 20.5 | (Cotton Incorporated, 2018) |
Medium fiber | 20.6–27.8 | ||
Long fiber | 28.6–33.3 | ||
Extralong fiber | 34.9–42.0 | ||
Micronaire (maturity and fineness) | Very fine | < 3.0 | |
Fine | 3–3.9 | ||
Medium | 4–4.9 | ||
Coarse | 5–5.9 | ||
Very coarse | ≥ 6.0 | ||
Fiber strength/(gf·tex-1) | Weak | ≤ 23 | (Cotton Incorporated, 2018) |
Intermediate | 24–25 | ||
Average | 26–28 | ||
Strong | 29–30 | ||
Very Strong | ≥ 31 | ||
Length uniformity index/% | Very low | < 77 | |
Low | 77–79 | ||
Intermediate | 80–82 | ||
High | 83–85 | ||
Very High | > 85 | ||
Fiber elongation/% | Very low | < 5.0 | |
Low | 5.0–5.8 | ||
Average | 5.9–6.7 | ||
High | 6.8–7.6 | ||
Very high | ≥ 7.7 | ||
Maturity index/% | Very immature | < 0.70 | (Salazar, 2002) |
Immature | 0.70–0.85 | ||
Mature | 0.86–1.00 | ||
Very mature | > 1.00 | ||
Short fiber index/% | Very low | < 6 | (Zellweger, 1999) |
Low | 6–9 | ||
Average | 10–13 | ||
High | 14–17 | ||
Very high | > 17 |