Persistence of 2,4-D and 2,4,5-T in chaparral soil and vegetation

The behavior of 2,4-D and 2,4,5-T has been widely studied in the cool moist forests of the Pacific Northwest (NORRIS 1971). Little data are available, however, for the unique conditions in arid southern California, where the two compounds are used for maintenance of fuelbreaks in chaparral vegetation. Reported here is a study to determine the movement and persistence of 2,4-D and 2,4,5-T in soil and sprouting chamise vegetation for 1 year after application in a southern California chaparral site.1/