Multiyear study of the effects of kinetin and other plant growth hormones on yield, agronomic traits, and allelochemicals of cotton
1994
Hedin, P.A. | McCarty, J.C. Jr
In recent years, a number of plant growth hormones including the synthetic cytokinin, kinetin, have been evaluated for their effects on yield and agronomic traits of various crop plants. In a series of tests conducted from 1986 to 1992, kinetin was evaluated using foliar sprays applied to cotton (Gossypium hirsutum L.) plants in an attempt to improve yield, agronomic traits, and content of allelochemicals in the bud. For comparison, tests were conducted using kinetin riboside, indoleacetic acid, and gibberellic acid. The effects of these plant growth hormones were near zero over the 6 year period, although, in some individual tests, statistically significant differences in yield were obtained. No multiyear trends were evident. Kinetin and gibberellic acid appeared to increase bud gossypol, an established cotton allelochemical, in some years. Overall, these growth hormones appeared to be marginally effective at best for increasing yields and allelochemicals as tested.
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