Results 181 to 190 of about 74,135 (217)
Some of the next articles are maybe not open access.
The Sensitivity of Young White Spruce to Spruce Budworm Defoliation
Northern Journal of Applied Forestry, 1991Abstract Relationships between defoliation and volume growth were determined for 68 young white spruce trees in a 20-year-old plantation defoliated over a 2-year period by the spruce budworm. In the first year of defoliation, intensities ranging from 7 to 89% of the current foliage did not influence volume growth significantly.
openaire +1 more source
Studies on the holocellulose of Sitka spruce : methylation of spruce holocellulose
2012Sitka Spruce holocellulose has been prepared by the chlorite procedure as modified by Wise and associates. This material has been subjected to successive methylations. The methoxyl content and yield of the solid residue were determined after each methylation and the methoxyl contents have been compared with corresponding values obtained when extractive-
openaire +1 more source
Ancient Blue Spruce Hiding Among Engelmann Spruce
Results of research in forest health and forest futures in Utah Key Results 1. Ancient trees: Old-growth blue and Engelmann spruce (>300 years, Fig. 1) were scattered throughout closed-canopy stands. 2. Drought stress predominates: Higher precipitation and lower maximum temperatures improve growth — even in a forest at 10,000 ft. 3.Lutz, James A., Birch, Joseph D.
openaire +1 more source
Aminomethylation of spruce tannins and their application as coagulants for water clarification
Separation and Purification Technology, 2020Valtteri Virtanen +2 more
exaly