Effect of tordon herbicide as basal frill and tree injection treatments on certain hardwood trees

Watson, A.J.; Mesler, R.J.

Down to Earth 19(4): 20-23


ISSN/ISBN: 0012-5792
Accession: 024566764

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Tordon is a trade-marked name for a 4-amino-3,5,6-trichloropicolinic acid. Applied as a spray, in concentrations ranging from 0.7 to 1.4 pounds per gallon of water, to the cut surfaces of "frills" near the ground or injected at the rate of 0.25 - 1.00 ml per injection 2 inches apart around the trunk, almost complete kill of white oak and elm trees was effected, with very little subsequent sprouting. It was not similarly effective on maple. It proved superior to 2,4,5-T, presumably because of its more ready downward translocation from point of application.