The goal of this study was to evaluate the ability of two seedling quality evaluation methods to predict the field survival of Douglas-fir (Pseudotsuga menziesii) seedlings. The starch reserves in seedlings have been sug ...

An understanding of the gibberellins present in Douglas-fir is essential to understanding and controlling the growth and development of this species. A technique was developed which permits the separation of certain gib ...

Reforestation of Pacific Northwest forest-lands with western hemlock has been hindered by unexplained plantation failures. The purpose of this thesis is to provide information that will help in determining the cause of ...