caa a22 4500 463216474 CHVBK 20180405153158.0 cr unu---uuuuu 170326e20070101xx s 000 0 eng 10.1007/s00226-006-0089-2 doi (NATIONALLICENCE)springer-10.1007/s00226-006-0089-2 Moisture and blue stain distribution in mountain pine beetle infested lodgepole pine trees and industrial implications [Elektronische Daten] [Suezone Chow, Alice Obermajer] Healthy lodgepole pine trees and trees at three stages (green, red and grey) of infestation by mountain pine beetles (MPB) were examined for moisture and blue-stain distribution in the radial and longitudinal directions. The sapwood moisture content of trees dropped about 100% from the healthy stage while the heartwood moisture dropped about 10%, regardless of green, red or grey attack stages. Moisture content variation with tree height was unique up to the time since beetle attack. The volume of blue stain increased with increasing time since beetle attack. Maximum discolouration in wood occurred at about 3m above ground level and expanded rapidly upward. Lumber sawn and tracked from the MPB attacked logs showed a decrease in moisture content with increasing time since beetle attack, indicating the need for specific drying schedules employing lower energy levels. The economic implication of the effect of blue stain was evaluated by the percentage of Japanese grade (J-grade) lumber produced. The J-grade lumber yield decreased with increasing time since beetle attack. Early harvest and conversion of MPB infected trees will positively impact product value and recovery. Springer-Verlag, 2006 Chow Suezone Canadian Forest Products Ltd., 3800 Wesbrook Mall, Vancouver, BC, Canada aut Obermajer Alice Canadian Forest Products Ltd., 3800 Wesbrook Mall, Vancouver, BC, Canada aut Wood Science and Technology Springer-Verlag 41/1(2007-01-01), 3-16 0043-7719 41:1<3 2007 41 226 https://doi.org/10.1007/s00226-006-0089-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00226-006-0089-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chow Suezone Canadian Forest Products Ltd., 3800 Wesbrook Mall, Vancouver, BC, Canada aut NATIONALLICENCE 700 1- Obermajer Alice Canadian Forest Products Ltd., 3800 Wesbrook Mall, Vancouver, BC, Canada aut NATIONALLICENCE 773 0- Wood Science and Technology Springer-Verlag 41/1(2007-01-01), 3-16 0043-7719 41:1<3 2007 41 226 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer