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Home → Publications → Tree Planters' Notes → Tree Planters' Notes Volume 18, Number 4 (1967) → Effect of Storage on Subsequent Growth and Repellency of Douglas-Fir Seedlings Sprayed with TMTD

Effect of Storage on Subsequent Growth and Repellency of Douglas-Fir Seedlings Sprayed with TMTD

Successful spraying of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) seedlings with TMTD rabbit repellent is partly dependent on favorable weather conditions. Spraying should be done when relative humidity is low, seedlings are dry, and air temperature is close to 70°F. (Duffield and Eide 1962). Under these conditions, the adhesive in the TMTD formulation now in use binds the repellent to the seedlings best. Since these conditions are uncommon during the cool, moist, spraying season in the Pacific Northwest, TMTD applications are made whenever the weather is favorable. It often becomes necessary, therefore, to hold treated seedlings for a few weeks when outplanting is delayed by adverse weather or other conditions. During this time, treated seedlings are either left in the nursery beds or lifted and cold stored until needed.


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Author(s): M. A. Radwan, Wendell E. Dodge, Homer S. Ward

Publication: Tree Planters' Notes - Volume 18, Number 4 (1967)

Volume: 18

Number: 4