JR Baur, RD Baker, RW Bovey, JD Smith - Weed Science, 1972 - cambridge.org
Soil residue levels were studied to a depth of 2.4 m for a period of 2 years after application
of 1.12 kg/ha of 4-amino-3,5,6-trichloropicolinic acid (picloram). Thirty days after application …