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Drying of sapwood, heartwood and mixed sapwood and heartwood boards of Pinus radiata
Holz als Roh- und Werkstoff, 2000boards in stacks of all sapwood, all heartwood and mixed sapwood and heartwood, using a tunnel dryer. Drying temperatures were 90/60 °C and airflow was reversed every three hours, with an average air velocity of 5.0 m/s. For stacks of all sapwood and all heartwood boards, the influence of board thickness and position of thicker and thinner boards in ...
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Holzforschung, 1990
In order to characterize the physiological functions of sapwood of needle-leaved tree, ten definite sugar and phenolic constituent contents were periodically determined among outer, middle and inner sapwoods of three Japanese cedars (Sugi, Cryptomeria japonica D. Don, Taxodiaceae) for 150 days after cutting. The fluctuation of these constituents in the
Hideo Ohashi +3 more
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In order to characterize the physiological functions of sapwood of needle-leaved tree, ten definite sugar and phenolic constituent contents were periodically determined among outer, middle and inner sapwoods of three Japanese cedars (Sugi, Cryptomeria japonica D. Don, Taxodiaceae) for 150 days after cutting. The fluctuation of these constituents in the
Hideo Ohashi +3 more
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THE SAPWOOD-HEARTWOOD TRANSITION
Australian Forestry, 1952SUMMARY The transition from sapwood to heartwood in certain species has been described in detail, and the formation of intermediate wood discussed. The distinction between sapwood and heartwood cannot always be clearly made on the basis of colour, or on the presence of starch or tyloses, but must be based on the fundamental change which lies behind ...
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Chemical characterization ofPinus halepensissapwood and heartwood
Wood Material Science & Engineering, 2018ABSTRACTThis paper describes the chemical composition of sapwood (SW) and heartwood (HW) of Pinus halepensis Mill stem. Extractives were first isolated by accelerated solvent extraction and then analysed by gas chromatography-mass spectrometry (GC-MS).
Nacera Benouadah +3 more
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Oxygen Transport in the Sapwood of Trees
2010Gas composition inside large woody stems differs significantly from that of the ambient atmosphere because of cellular respiration in the xylem, phloem and cambium. Oxygen is required for oxidative respiration, which under most conditions provides the energy for plant cells. The gaseous environment within the woody stems is enriched in CO2 and depleted
MANCUSO, STEFANO, MUGNAI, SERGIO
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Persistence of benomyl in pruned apricot sapwood
Australian Journal of Agricultural Research, 1975The persistence of benomyl in pruned apricot sapwood was investigated. The amount of fungi toxicant recovered from sapwood after application of 5 µg benomyl to the pruned surfaces varied at different times of the year between 90 and 25% when sampled after 2 hr and between 45 and 15% when sampled after 15 days.
TV Price, MV Carter
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Sapwood allocation in tropical trees: a test of hypotheses
Functional Plant Biology, 2015Carbon allocation to sapwood in tropical canopy trees is a key process determining forest carbon sequestration, and is at the heart of tree growth and dynamic global vegetation models (DGVM). Several allocation hypotheses exist including those applying assumptions on fixed allocation, pipe model, and hierarchical allocation between plant organs. We use
Schippers, P. +3 more
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Fluid Self-Diffusion in Scots Pine Sapwood Tracheid Cells
The Journal of Physical Chemistry B, 2006The self-diffusion coefficients of water and toluene in Scots pine sapwood was measured using low field pulsed field gradient nuclear magnetic resonance (PFG-NMR). Wood chips of 8 mm diameter were saturated with the respective liquids, and liquid self-diffusion was then traced in one dimension orthogonal to the tracheid cell walls in the wood's radial ...
Espen H, Johannessen +2 more
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Response of maple sapwood to injury and infection
European Journal of Forest Pathology, 1995SummaryIn sapwood challenge experiments in Acer rubrum, columns of discolouration initiated by wounding and inoculation with pioneer fungi (Cephalosporium sp., Phialophora sp.) were similar in size to untreated wounds. Inoculation with decay fungi (Pleurotus ostreatus, Trametes versicolor) produced larger columns of wound‐initiated discolouration.
W. C. Shortle +3 more
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Forest Science, 1968
Abstract A comparison was made of morphological and chemical differences between sapwood, discolored sapwood (wound-initiated discolorations), and heartwood in Maclura pomifera (Raf.) Schneid. and Robinia pseudoacacia L. The heartwood and discolored sapwood in the vicinity of wounds differed significantly in color, water content ...
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Abstract A comparison was made of morphological and chemical differences between sapwood, discolored sapwood (wound-initiated discolorations), and heartwood in Maclura pomifera (Raf.) Schneid. and Robinia pseudoacacia L. The heartwood and discolored sapwood in the vicinity of wounds differed significantly in color, water content ...
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