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Effects of Polymer Film Coatings of Cotton Seed on Dusting-Off, Imbibition, and Germination

K.D. Williams and N.W. Hopper


As the amount of treatments placed on cottonseed increases, this material has a greater potential of coming off the seed in a process referred to as dusting-off. This dust-off material can be composed of pesticides, other seed treatments, or seed coat fragments that do not reach the target site. Some polymers can have a significant effect on dusting-off. The Opacoat Red polymer reduced dusting-off at all applications. The polymer had the most prominent effect when the rate of polymer increased or the polymer was applied as a mixture with the fungicide compared to a polymer coat over fungicide. The Opacoat Red polymer did reduce water imbibition at 680F (200C) through 8 hours at all rates and methods of polymer application, by twelve hours the treatments with a 1% by weight coating were not significantly different from the control. However, the polymer did not effect the establishment percentage in an environmental chamber study at 640F (180C). No significant differences between the control and other treatments were noted using the cool warm vigor index, establishment in the field, and yield.

Reprinted from Proceedings of the 1998 Beltwide Cotton Conferences pp. 1380 - 1382
©National Cotton Council, Memphis TN

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Document last modified Sunday, Dec 6 1998