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Filtering by: Subject Douglas fir -- Testing Advisor Lavender, Denis P. Committee Member Zaerr, Joe

Water relations, growth and survival of root-wrenched Douglas-fir seedlings

Creator:

Duryea, Mary L.

Abstract:

Chapter 1 Growth and Survival of Root-Wrenched Douglas-fir Seedlings Root wrenching of seedlings (severing the roots 15 cm below the soil surface) was investigated as a nursery practice to improve growth and survival of field-planted Douglas-fir from six local seed sources in the Pacific Northwest. At lifting, shoots of wrenched...

Resource Type:

Dissertation
Water relations and associated morphology of conditioned Douglas-fir and jack pine seedlings subjected to periods of drought stress

Creator:

McClain, K. M.

Abstract:

Significant post planting mortality of young conifer seedlings often occurs on drought prone sites because seedlings fail to either establish, or maintain favourable water relations. Survival is contingent upon growth which occurs when turgor pressure is above a threshold level. Since growth after planting is influenced by nursery cultural practices,...

Resource Type:

Dissertation