Nature 196, 1117 (15 December 1962); doi:10.1038/1961117a0

Effect of Halogenated Benzoic Acids on Elodea densa

HOWARD G. APPLEGATE^*

Department of Botany, Southern Illinois University, Carbondale, Illinois.
^*Present address : Department of Botany, Arizona State University, Tempe, Arizona.

A WIDE variety of plants have been treated with halogenated benzoic acids since the effect of these compounds as plant growth regulators was first reported by Zimmerman and Hitchcock¹. A search of the literature has revealed no information on the effects of such compounds on aquatic plants. Accordingly, an experiment was set up to discover the effect of halogenated benzoic acids on Elodea densa.

1. Zimmerman, P. W. , and Hitchcock, A. E. , Contr. Boyce Thompson Inst., 12, 321 (1942).
2. Van Overbeek, J. , Plant Physiol., 15, 291 (1940).
3. Niedergang-Kamien, E. , and Skoog, F. , Physiol. Plant., 9, 60 (1956).