Pesticide Information Profiles A Pesticide Information Project of Cooperative Extension Offices of Cornell University, Oregon State University, the University of Idaho, and the University of California at Davis and the Institute for Environmental Toxicology, Michigan State University. It may be used in formulations with other herbicides such as bromoxynil, diuron, 2,4-D, MCPA, triclorpyr, and atrazine. It is also compatible with fertilizers. RUPs may be purchased and used only by certified applicators.
Most grasses are resistant to picloram, so it is used in range management programs.
The materials in this document refer to the technical acid form unless otherwise indicated. There is no documented history of human intoxication by picloram, so symptoms of acute exposure are difficult to characterize. Please refer to the pesticide product labeling.