2 edition of Incipient decay control with gases in Douglas-fir poles found in the catalog.
Incipient decay control with gases in Douglas-fir poles
Jacques Louis Ricard
by Forest Research Laboratory, Oregon State University in Corvallis, Or
Written in English
|Statement||by Jacques L. Ricard, Thomas E. See, and Walter B. Bollen.|
|Contributions||See, Thomas E., Bollen, Walter Beno, 1896-|
|The Physical Object|
|Pagination||2 v. :|
Nitrogen-fixing bacteria in Douglas-fir residue decayed byFomitopsis pinicola Article (PDF Available) in Plant and Soil 68(1) February with 89 Reads How we measure 'reads'. of decay control in utility poles. Graham et al. () reported on decay devel- opment in Douglas-fir poles in the western United States and showed that agri- cultural fumigants injected in the groundline zone may extend service lives up to 10 years. This raised the important question of .
1 Incipient decay detection sampling kit for pole cores 9 2 Incipient decay detection pole cores after incu-bation, sound and infected poles 9 3 Three-week-old Poria carbonica colony on semi-synthetic medium 13 4 Pole sections at various stages of decay and corres-ponding plate cultures 14 5 Fungal populations from poles. Incipient decay. Due to the changes in chemical composition of wood, there is a measurable reduction in strength during the early stages of decay called incipient decay [,, ]. Even small mass losses are associated with major reduction in strength properties, especially when wood is .
a Assumes supplemental treatment applied at time of inspection.. b Deep decay will not be found unless the specifications call for excavation below 18 to 24 in.. c Full effectiveness will not be achieved on poles which cannot be fully excavated due to obstructions beyond the control of the inspector such as rock, adjacent buildings, sidewalks, keys, roots, risers and underground cable. The development of laboratory methodologies to access strength loss in wood undergoing incipient decay has recently shown that strength-related assessment of decay is a more sensitive measure than is the determination of weight loss, the commonly used measure for assessing decay (Winandy and Morrell , Curling et al.
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Control of IL Incipient Decay With Gases in Douglas-fir Poles InMessrs. Hand and A. Wetsch, of the Bonneville Power Administration, began a study of gas diffusion systems for controlling decay fungi and insects in Douglas-fir and West-ern Red Cedar utility poles. Many fumigants were tested in that year, among them Chlorodane.
Decay can cause signiﬁcant damage to high-value hardwood timber in the United States. Field foresters and managers are keenly interested in learning whether new nondestructive evaluation (NDE) technologies may be used to effectively detect incipient decay in standing hardwood timber at the earliest possible by: Control of incipient decay with gases in Douglasfir poles.
Forest Prod. 18(4) Fumigation as a remedial treatment: a review of North American literature. Douglas-fir poles 3-years ago and goes directly from a solid to a gas in the wood, appears promising In controlling decay fungi. Now encapsulated MIT B.
FLUORESCENT MICROSCOPY FOR DETECTING INCIPIENT DECAY AND CONTROL INTERNAL DECAY OF DOUGLAS-FIR POLES AT. The incidence of decay fungi was high in nonremedially treated control poles, especially at or below ground line. Isolation levels were also higher in poles treated with metam sodium systems (PoleFume, SMDS Fume, or WoodFume), reflecting the relatively short-term protection afforded by this : Matthew J.
Konkler, Jed Cappellazzi, Connie S. Love, Camille Freitag, Jeffrey J. Morrell. Fumigants. Chloropicrin, Vapam and Vorlex continue to control internal decay of Douglas-fir poles 11 years after application. Methylisothiocyanate (MIT), which was melted and poured into holes in Douglas-fir poles 3-years ago and goes directly from a solid to a gas in the wood, appears promising in controlling decay.
(). EQUIPMENT FOR DETECTION AND EVALUATION OF INCIPIENT DECAY IN TREES. Arboricultural Journal: Vol. 20, No. 1, pp. Nitrogen fixation rates, as estimated by the acetylene reduction technique, were determined for four decay stages of down Douglas-fir logs on two old-growth sites in northwestern Montana.
Additionally, this book discusses major issues associated with wood decay, detecting decay, and how to take protective action against it. This is a one-stop reference resource for wood scientists, wood processing and preserving professionals, foresters and forest pathologists, as well as students of forestry, and wood science and technology.
A: First, incipient decay (usually seen as a bleached white area surrounded by black zone lines that looks like someone doodled with a marker on the lumber) is caused by a decay. Incipient decay in most cases is caused by the white rot fungus, which typically develops because logs were stored in the woods or mill yard in warm weather for several months.
The Shigometer, an electronic-type detector that measures wood resistance, has been used to detect incipient internal decay in trees and utility poles (Shortle, ). This instrument gives unreliable results when the moisture content of the wood is greater than 38% (Morris & Dickenson, ).
Control of Decay in Waterfront Structures Wood is one of the most widely used materials for piers and wharves. However, decay of above-water marine structures resulting from inadequate treatment costs marina and dock owners millions of dollars annually.
Particularly prone to decay are the heartwood portions of pressure-treated. Biological control of decay in Douglas Fir poles — seven years perspective. Article. E., and BOLLEN, W. Control of incipient decay with gases in Douglas-fir poles. Forest Prod. Treatment of Douglas-fir poles with encapsulated MITC--effect of moisture content on chemical release 6 B.
EVALUATE NEW CHEMICALS FOR CONTROLLING INTERNAL WOOD DECAY. 11 Ability of solid fumigants to control decay fungi in Douglas-fir heartwood 11 Ability of fused borate rods to migrate through Douglas-fir heartwood and control Basidiomycetes bishing the pole, stalling decay, or minimizing the damage that could occur.
Timely detection of decay, coupled with on-site supplementary preservative treatment of infected poles, can arrest further deterioration and contribute to the safety, economy, and longevity of the pole. Active decay at groundline in poles can be. The Decay of Timber and Methods of Preventing It.
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Preservative Treatment of Wood Poles, Vol. 2 (Classic Reprint) jejy / in douglas-fir poles 40 objective iv. detect early decay in wood and estimate the residual strength of poles in service 41 detecting incipient decay by analysis of warn water extracts using infrared spectroscopy 41 detecting decay fungi using fluorescent labeled lectins 42 estimating strength of poles 43 residual strength of douglas-fir poles.
The potential influence of diverse decay patterns caused by different brown rot causing basidiomycetes on the structural integrity of wood was investigated. Therefore, decayed Norway spruce (Picea abies Karst.) specimens representing a wide range of mass loss, caused by four different brown-rot fungi and one white-rot fungus, were applied to a high-energy multiple impact (HEMI)-test.Get this from a library!
A study of decay in Douglas fir in the Pacific northwest. [John Shaw Boyce; United States. Department of Agriculture.] -- Pp.
The majority of stands in the Douglas-fir, subalpine fir Abies lasiocarpa, and cedar-hemlock cover types would have N gains.