Variability of Cotton Fiber Quality
Mar 27, 2019
Fiber quality variability is one of the key determinants of the profitability of the cotton crop. As variability increases, the risk associated with production increases and the expected return decreases. Prior to this study, variability had been characterized at the field or crop level. New technologies permit the analysis of very small samples, facilitating multi-scales studies. The variability in fiber properties is characterized and associated with genetic, environmental and production-linked sources. This research uses statistical models exclusively with the objective of studying the link between fiber quality variability and different levels at which it can be assessed in a cotton population. The treatments imposed on the different plots (water stress, nutrient levels, plasticulture) had as objective the induction of different variances in fiber properties, allowing the statistical associations to be made between sources and nature of the variability. It was possible to measure the effect of treatments on the number of bolls/m² and the vegetative development of the plants. Subsequently, changes in this variability at different scales in a production plot will be specifically associated and characterized.