Planting of Douglas Fir seedlings following aerial application of Tordon 101 mixture herbicide

Finnis, J.M.; Sund, J.D.

Down to Earth , Midland, Mich 26(1): 10-1


Accession: 014608958

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Four test areas were selected in western Washington where the annual rainfall is 50-70 in. Tordon 101, mostly at 2 gal in 8-18 gal water/acre, was applied in June or July 1966 or August 1967. Results showed that Pseudotsuga menziesii seedlings could be safely planted 4 months after spraying. By contrast, seedlings present at the time of spraying showed injury symptoms for over 4 years.