Even on poorer soils the yield was much higher than the best stands of Scots pine, sometimes more than double. Wood production declined over 30 years much more than in Germany through lack of thinnings by too wide a spacing.
Further advantages over Scots pine were better decomposition of needles, straighter stems, harder wood as measured by resistance to crushing through a higher porportion of summer wood and early formation of heart wood. A disadvantage was the severe self-pruning. Experience on planting and culture were discussed. Growth in length was strongly influenced by rainfall in the same year.
|Qualification||Doctor of Philosophy|
|Award date||28 Apr 1925|
|Place of Publication||Wageningen|
|Publication status||Published - 1925|
- plant physiology
- growth regulators
- plant development
- pseudotsuga menziesii