Investigating Storm Resistance in Spindle-Picked Upland Cotton
2004
Faircloth, Joel | Stewart, Alexander | Harper, Alan | Edmisten, Keith | Wells, Randall S.
In cotton (Gossypium hirsutum L.), storm resistance is an agronomic trait that identifies how tightly locks of fiber are held in open bolls. Delayed harvests often occur due to demands on harvest equipment, weather, commitment to other crops, and/or reliance on custom harvest. This study was conducted to evaluate the storm-resistant characteristics of commonly grown upland cultivars in spindle-picked cotton producing areas. Seedcotton loss of twenty cultivars was measured in 1996, 1997, 1999, and 2000 in the Coastal Plain of North Carolina. Yields were obtained in 1999 and 2000 to examine the significance of seedcotton losses associated with specific varieties. Significant differences exist among cultivars in terms of seedcotton loss during the latter part of the growing season. Sure Grow 501, Sure Grow 501 BG/RR, and Stoneville LA 887 consistently lost a relatively large amount of seedcotton in the years these cultivars were tested while Deltapine 5415 consistently lost a relatively small amount. However, both Sure Grow 501 and Sure Grow 501 BG/RR produced high yields and thus the significance of the seedcotton loss was not as detrimental as with other varieties. The relationship between seedcotton loss and relative maturity was mixed. This study suggests that storm resistance of spindle-picked upland cotton cultivars may have merit in cultivar selection and harvest scheduling.
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