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Home → Publications → Tree Planters' Notes → Tree Planters' Notes Volume 38, Number 3 (1987) → Effectiveness of New Formulations of Deer Repellants Tested in Douglas-Fir Plantations in the Pacific Northwest

Effectiveness of New Formulations of Deer Repellants Tested in Douglas-Fir Plantations in the Pacific Northwest

Data were collected from 25 sites west of the crest of the Cascade Mountains in Washington and Oregon. Only 14% of Douglas-fir seedlings (Pseudotsuga menziesii (Mirb.) Franco, treated with a powder formulation of Deer Away (putrefied egg solids) revealed browse damage by deer or elk. Of control seedlings, and seedlings treated with Repelliff (a 1:1 mix of epi-dihydroandrosterone and androsterone), and Repelliff placebos, 42, 38, and 40%, respectively, were browsed. Tree Planters' Notes 38(3):22-25; 1987.


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Author(s): David DeYoe, Wieger Schaap

Publication: Tree Planters' Notes - Volume 38, Number 3 (1987)

Volume: 38

Number: 3