Extension Toxicology Network A Pesticide Information Project of Cooperative Extension Offices of Cornell University, Michigan State University, Oregon State University, and University of California at Davis. Major support and funding was provided by the USDA/Extension Service/National Agricultural Pesticide Impact Assessment Program.
Introduction
Cacodylic acid is an arsenical non-selective contact herbicide which will defoliate or desiccate a wide variety of plant species (6). It is used as a cotton defoliant and for lawn renovation, for weed control in non-crop areas such as around buildings, near perennial ornamentals, along fence rows, and in forest management. Its phytotoxic properties are quickly inactivated upon contact with the soil (2). Cacodylic acid is available in concentrated solution formulations (3).