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Laboratory and Field Performance of Polymer Coated Fuzzy Cottonseed

Daniel Olivier, David Becker, Norman Hopper and Tom Wedegaertner


ABSTRACT

In order for modern planting equipment to function properly, seeds must readily flow in a single seed manner. After the ginning process, linters and small amounts of long fibers remaining on cottonseed cause the seed to clump together and resist this flowing action necessary for planting. Cottonseed for commercial planting is, therefore, delinted using an acid procedure which is very effective and is a relatively low cost method of preparing cottonseed for planting. Yet, concerns associated with acid delinting include potential seed damage, worker safety, waste disposal, and deterioration of equipment exposed to acid. Development of an alternative system for preparing gin run cottonseed for planting purposes could address some of the concerns associated with these acid delinting procedures. The objective of this study was to evaluate the effects of different rates and ratios of the polymer X-Pand’r and talc applied to reginned cottonseed on the germination (Cool Germination Test- CGT), vigor (Cool Warm Vigor Index-CWVI), emergence (Environmental Control Chamber Warm-ECCW and Field Emergence Rate Index-FERI), Field Establishment Percent (FEP), and Lint Yield (LY) of cotton. All treatment results were compared to the fuzzy and delinted controls. Data from this study indicated that none of the polymer/talc treatments used increased the CGT, CWVI, ECCW, and LY values on cotton when compared to the controls; however, the following treatments did increase the FERI and FEP when compared to both controls (unless otherwise noted): 1:8 (FERI- delinted only), W1 (FERI- delinted only), W2, and W5. The only treatments that were not significantly different from either control for all six parameters were the following: 2:4, 2.5:8, and W3. Results from the 2001 year suggested that cottonseed could be coated with certain of the treatments studied and not suffer any germination, emergence, and stand or yield loss.





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Document last modified May 20, 2002