ABSTRACT

In Ethiopia, cotton is trademarked by the name of the farm and the location or the farm owner. Variety name and fiber quality characteristics are not part of the labeling. The aim of this research is to identify the cotton varieties in Ethiopia. Dp 90 covers 90% of the total acreage while the rest of the area under production is planted with local varieties and Stam 59A. In this study Ethiopian cotton classification is done by using USTER® HVI 1000 and USTER® AFIS PRO2. Comparative analysis of the quality characteristics of Ethiopian cotton such as UHML, strength, uniformity, short fiber content, color were analyzed by USTER® HVI 1000 and fineness, maturity UQL and short fiber content by number were considered by USTER® AFIS PRO2. The data analysis using Minitab® 17 shows that local type cotton gives the best fiber properties followed by Stam 59A and Dp 90. Compared to Texas cotton, Ethiopian cotton has better uniformity due to the presence of a single variety Dp 90 despite the limitations within bale variability. For other properties, findings reveal lower quality especially in strength and upper half mean length which are the main fiber characteristics that determines the spinning quality.

摘要

在埃塞俄比亚，棉花以农场名称和位置或农场所有者为商标。品种名称和纤维质量特征不是标签的一部分。这项研究的目的是确定埃塞俄比亚的棉花品种。Dp 90 覆盖了总面积的 90%，而其余的生产区域则种植了当地品种和 Stam 59A。在这项研究中，埃塞俄比亚棉花分类是使用 USTER® HVI 1000 和 USTER® AFIS PRO2 完成的。通过 USTER® HVI 1000 分析埃塞俄比亚棉花的 UHML、强度、均匀度、短纤维含量、颜色等质量特征的比较分析，并通过 USTER® AFIS PRO2 考虑按数量计算的细度、成熟度 UQL 和短纤维含量。使用 Minitab® 17 进行的数据分析表明，本地棉的纤维性能最好，其次是 Stam 59A 和 Dp 90。与德克萨斯棉相比，由于存在单一品种 Dp 90，埃塞俄比亚棉具有更好的均匀性，尽管棉包内存在限制变化性。对于其他特性，研究结果表明质量较低，尤其是强度和上半部平均长度，这是决定纺纱质量的主要纤维特性。