Residues of Forestry Herbicides in Plants of Importance to California Native Americans.

The article presents a study on the residues of herbicides specifically glyphosate, triclopyr, and hexazinone in thirteen plant species in the areas of Eldorado, Lassen, Stanislus, and Sierra National Forests in California. The study was conducted to monitor plants that have potential exposures to herbicides in order to avoid Native Americans from collecting the said plant materials. The method of the study was carried out through collective sample of plant species and parts for discussion with Native Americans and site observation, and analytical method of the herbicides. The study reveals that 45 of 92 samples collected from inside treatment contained detectable residues of herbicides while 4 of 119 samples collected outside the treatment areas.