title: Amitrole Translocation in Agropyron repens Increased by the Addition of Ammonium Thiocyanate.
abstract: The mechanism for the enhancement of amitrole activity on quackgrass (Agropyron repens) by the addition of ammonium thiocyanate was studied. Absorption and translocation of C(14)-amitrole after applications to foliage were determined by a direct count of the radioactivity in the wash solution and plant extracts. Regardless of the time of application, the addition of ammonium thiocyanate did not alter the amount of C(14)-amitrole absorbed. Ammonium thiocyanate (5000 parts per million) greatly increased the amount of carbon-14 translocated. This increase may account for the greater herbicidal effectiveness of the mixture of amitrole and ammonium thiocyanate.
authors.forename: W F
authors.initials: WF
authors.lastname: Donnalley
authors.forename: S K
authors.initials: SK
authors.lastname: Ries