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Published online 1 September 1956
Published in Agron J 48:412-415 (1956)
© 1956 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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A Preliminary Study of the Effect of Low Concentrations of Phenoxytype Growth Regulators on Early Physiological Shedding in Deltapine D10, TPSA, Cotton: I. Seed Treatment with Dusts1

S. P. Johnson and W. R. Cowley2

Synopsis: The growth regulators, 2, 4-dichlorophenoxyacetic acid, parachlorophenoxy, and 2-(2, 4, 5-trichlorophenoxy) propionic acid were applied as low concentration dusts to the seeds of Deltapine D10, TPSA, cotton. Results indicate that early physiological shedding was reduced. No loss in yield or changes in lint and seed properties was found. Parachlorophenoxyacetic acid proved to be the most effective of the three compounds.

1 Published with approval of the director of the Texas Agr. Exp. Sta. as Technical article 2419.

2 Assistant Professor, Department of Plant Physiology and Pathology, Texas A. & M. College, College Station, Tex., and Superintendent, Texas Agr. Exp. Sta., Weslaco, Texas, respectively.

Received for publication May 4, 1956.




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Copyright © 1956 by the American Society of Agronomy.