A Picolinic Acid Derivative: A Plant Growth Regulator

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Science  26 Jul 1963:
Vol. 141, Issue 3578, pp. 363
DOI: 10.1126/science.141.3578.363


4-Amino-3,5,6-trichloropicolinic acid is more toxic to many broad-leaved plants than 2,4-dichlorophenoxyacetic acid and 2,4,5-trichlorophenoxyacetic acid. It is comparable in absorption by foliage, in translocation, and in soil-leaching characteristics; in soil, however, it retains its activity for a longer time.