Molecular Structure and Herbicide Adsorption

Abstract

The physical adsorption of chemical substances onto surfaces in soils or inside plants has been of considerable interest with respect to the fate of herbicides in soils, the selectivity of growth regulator herbicides, and even with respect to the toxic activities of growth regulators in plants. Comparative measurements of the adsorption of various herbicides are limited in number and scope. Experiments are presented here which attempt to measure the relative adsorptive qualities of various chlorinated phenoxyacetic acids, and to provide some evidence concerning the bearing of adsorption on herbicidal action.