Defoliation tests were conducted on upland and Pima cotton at the Maricopa Agricultural Center to evaluate the use of low rates of Ginstar for preconditioning cotton, several rates of Ginstar and tank mixes of Ginstar and Def. The upland cotton used in this test was generally difficult to defoliate, probably because of cool night temperatures. One application of Ginstar + Def gave acceptable defoliation of upland cotton 14 days after treatment (DAT) and this treatment was as good as using Ginstar as a preconditioner followed by Ginstar (2 applications of defoliant). For Pima cotton, most Ginstar treatments gave acceptable defoliation 7 DAT. Although defoliation treatments caused some leaf desiccation, it was not a serious problem in these tests. All defoliation treatments resulted in excellent control of terminal regrowth for both upland and Pima cotton.
| Identifer | oai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/197040 |
| Date | January 1999 |
| Creators | Nelson, J. M. |
| Contributors | Silvertooth, Jeff |
| Publisher | College of Agriculture, University of Arizona (Tucson, AZ) |
| Source Sets | University of Arizona |
| Language | en_US |
| Detected Language | English |
| Type | text, Article |
| Relation | AZ1123 |
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