Damage to the Seed of Douglas-Fir by the Douglas-Fir Cone Midge

By Johnson Norman E.   Heikkenen H. J.  

Forest Science, Vol. 4, Iss. 4, 1958-12 ,pp. : 274-282

Society of American Foresters

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Douglas-Fir Orchards: Managing Cone and Seed Insects

By Zhang Yanli   Schowalter Timothy D.  

Journal of Forestry, Vol. 95, Iss. 3, 1997-03 ,pp. : 28-32

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Effects of Tree Spacing and Height Reduction on Cone Production in Two Douglas-Fir Seed Orchards

By Copes D. L.   Bordelon Mike  

Western Journal of Applied Forestry, Vol. 9, Iss. 1, 1994-01 ,pp. : 5-7

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Effects of Lifting Date and Storage on 2+0 Douglas-Fir and Noble Fir

By Winjum Jack K.  

Journal of Forestry, Vol. 61, Iss. 9, 1963-09 ,pp. : 648-654

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Loss of Douglas-Fir Seed Viability During Cone Storage

By Rediske J. H.   Shea K. R.  

Forest Science, Vol. 11, Iss. 4, 1965-12 ,pp. : 463-472

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