9426 Quality Score (QS): Breeder Selection Tool With Another Year of Data

Thursday, January 8, 2009: 8:15 AM
Conf. Rooms 1-4 (Marriott Rivercenter Hotel)
Don C. Jones, Cotton Incorporated, Cary, NC
A fiber quality score (QS) was developed using four fiber properties provided from HVI. Many international buyers demand longer staple length, less variation in micronaire, and higher uniformity than was acceptable in years past.  This experiment was conducted to determine if results observed in 2006 repeated in 2007.  

 QS is based on HVI data generated from entries grown in the same experiment. HVI fiber data is scaled using two standard deviations of the entire US grown crop to eliminate units of measurement, and then QS is calculated using the following weights: .5 (upper half mean length) + .25 (micronaire) + .20 (uniformity index) + .05 (strength). The score is reported on a 0 to 100 scale.  Micronaire between 3.8 and 4.6 provide maximum contribution to QS.