Your search resulted in 1091 documents. Displaying 25 entries per page.
New research data confirming the suitability of bifenthrin as a wood preservative
1996 - IRG/WP 96-30116
Bifenthrin has been further tested against wood destroying insects, and its behaviour in wood has been extensively studied. Bifenthrin proved to be highly effective as a curative and preventative treatment against Anobium punctatum and Hylotrupes bajulus, after both leaching and evaporative ageing. Results of penetration tests with water and solvent based formulations, applied by brushing, dipping...
S Shires, P Héloir, B Chen, G Rustenburg
Some Experiences with Stake Tests at BAM Test Fields and in the BAM Fungus Cellar
Part 1: Comparison of Results of Visual Assessments and Determinations of Static Moduli of Elasticity (MOE)
2005 - IRG/WP 05-20319
With examples of routine in-ground stake tests differences are shown in the performance of wood preservatives at the BAM test fields Lehre and Horstwalde and in the BAM fungus cellar. Signs of attack of micro-organisms were assessed visually according to EN 252. Periodical determinations of static moduli of elasticity (MOE) revealed the influence of the attack on the elastic properties of the wood...
M Grinda, S Göller
The influence of cement and calcium compounds on the performance of CCA preservatives
1983 - IRG/WP 3221
The influence of cement and calcium compounds on the durability of untreated and CCA treated wood is considered. Calcium compounds were found to reduce the toxicity of a CCA preservative to a soft rot fungus at copper to calcium ratios of 1:1 and 1:10 using a cellulose filter paper technique. Further studies are outlined and some possible mechanisms by which cement and calcium compounds may affect...
R J Murphy
Alkyl dimethyl benzyl ammonium chloride: toxicity to Coniophora puteana when formulated in water and organic solvent
1986 - IRG/WP 2250
Results from agar block tests using Coniophora puteana demonstrate that the biological activity of alkyl dimethyl benzyl ammonium chloride is affected by the nature of the carrier solvent in which it is applied. In contrast to some earlier work, an alkyl ammonium compound in organic solvent formulation was identified that had significantly greater activity than its aqueous equivalent. A simple sol...
D P Blow
Blue stain in timber in service. Progress review of Sub-group collaborative tests - 1981/82
1982 - IRG/WP 2178
Following from the discussions after reporting Document IRG/WP/2146 at the Meeting in Sarajevo, 1981, it was decided that 1.) more precise definition was needed of the artificial weathering schedules used in the work - participants to re-check Table 8 and send further details or amendments to Dr Bravery; 2.) a further test employing a wider range of chemicals was necessary using a smaller range of...
A F Bravery, D J Dickinson
Efficacy of a novel copper-based organic solvent preservative in laboratory and fungus cellar tests
1995 - IRG/WP 95-30071
The efficacy of Chemicca 4, a novel copper-based organic solvent preservative, was compared with that of other LOSP in pure culture laboratory decay tests and with that of CCA and TBTO in a fungus cellar exposure. It was markedly superior to copper and zinc naphthenates at equivalent metal retentions in laboratory decay tests, and similar in activity to TBTO. After 60 months' fungus cella...
M E Hedley, P N Maynard
Laboratory evaluation of disodium octaborate tetrahydrate (TIM-BORÒ ) as a wood preservative or a bait-toxicant against the Formosan and eastern subterranean termites (Isoptera: Rhinotermitidae)
1991 - IRG/WP 1513
A no-choice bioassay indicated that termite feeding was significantly reduced when wood was treated with TIM-BORÒ at retentions of >3600 ppm and >900 ppm (w/w) for Coptotermes formosanus and Reticulitermes flavipes, respectively, and thus these wood preservative retention rates may be considered for these termite species. Results of a choice bioassay suggested retention rates of 450-1800 pp...
N-Y Su, R H Scheffrahn
New Observations and Interpretation for Tunnelling Bacteria Decay
2006 - IRG/WP 06-10579
Decay micromorphology was studied systematically for diversely preservative treated Pinus radiata and Fagus sylvatica 20 x 20 x 500 mm stakes across 13 in-ground field test sites, during a 6.5 year exposure. Sites were selected to maximise occurrence of a diverse range of decay types. Micromorphology that suggested orientation of tunnelling bacteria with the cellulose microfibrils of the S2 and S1...
R Wakeling
Micromorphological Characteristics of Degradation in Bamboo Attacked by White Rot Fungus Lentinus edodes
2006 - IRG/WP 06-10575
In comparison with micromorphological works for wood decay, little known is about the decay pattern of bamboos by wood decay fungi. The present work was undertaken to understand the general degradation pattern of bamboo and the influence of polylaminate layers in bamboo fiber walls on the restriction of fungal decay. The weight loss of bamboo species Phyllostachys puberscens against the white rot ...
Chang Hyun Cho, Kwang Ho Lee, Yoon Soo Kim
Laboratory Evaluation of Soft Rot Resistance of Non-Durable Lesser-Known Malaysian Hardwoods
2006 - IRG/WP 06-10582
Resistance of six non-durable lesser-known Malaysian hardwoods, Pulai (Alstonia spp.), Rubberwood (Hevea brasiliensis), Ludai (Sapium spp.), Jelutong (Dyera costulata), Gaham Badak (Blumeodendron tokbrai) and Kayu arang (Diospyros spp.) compared with temperate Scots pine sapwood (Pinus sylvestris), were evaluated using the unsterile soil burial (mixed with Chaetomium globosum) versus vermiculite-b...
A H H Wong
Evidence for Basidiomycete Tunnelling in Pinus radiata and Fagus sylvatica
2006 - IRG/WP 06-10587
Decay micromorphology was studied systematically for diversely preservative treated Pinus radiata and Fagus sylvatica 20 x 20 x 500 mm stakes across 13 in-ground field test sites, during a 6.5 year exposure. Sites were selected to maximise occurrence of a diverse range of decay types. Presence of clamp connections in close associated with tunnelling coupled with macroscopic features similar to whi...
R Wakeling
Isolation and characterization of hydroxyl-radical-producing glycopeptide genes from the white-rot basidiomycete Phanerochaete chrysosporium
2006 - IRG/WP 06-10588
During wood decay, the white-rot basidiomycete Phanerochaete chrysosporium secretes low-molecular-weight glycopeptides that catalyze a redox reaction between O2 and electron donors to produce hydroxyl radical. This reaction accounts for most of the hydroxyl radical produced in wood-degrading cultures of P. chrysosporium. In combination with phenol oxidases, hydroxyl radical is believed to play a r...
H Tanaka, G Yoshida, Y Baba, K Matsumura, S Itakura, A Enoki
Molecular characterization of M’jej, decaying agent of cedar forests in Morocco
2006 - IRG/WP 06-10593
Cedar wood is well appreciated since thousand years even though its economical importance is limited because of its world distribution restricted to some Mediterranean countries and Himalaya. The most important species, Cedrus atlantica have its biggest population in Morocco (130 000 ha) where it is submitted to fungal diseases. Among them, the locally named “M’jej” reduced notably saw mile ...
A Zaremski, S Bakkali-Yakhlef, C Chaintreuil, Y Abbas, Y Prin, M Abourouh, M Ducousso
Comparing microbial colonisation and Decay Rates of Wood from Sound and Aphid-Killed Kenyan-Grown Mexican Cypress (Cupressus lusitanica)
2006 - IRG/WP 06-10599
Samples of wood from 10, 15, and 30-year old trees attacked and killed by the cypress aphid (Cinara cupressi) and sound Kenyan-grown Cupressus lusitanica trees were investigated for variations in moisture content, density and susceptibility to microbial decay. MC varied with tree age, a normal trend, and between samples from aphid-killed and sound trees. In samples from 10, 15 and 20-year old so...
R Venkatasamy
Is Field Test Data from 20 x 20mm Stakes Reliable? Effects of Decay Hazard, Decay Type and Preservative Depletion Hazard
2006 - IRG/WP 06-20327
Effects of decay hazard, decay type and preservative depletion hazard on the performance of variously preservative treated 20 x 20 x 500 mm Radiata pine and Fagus sylvatica test stakes across 13 field test sites in New Zealand and Queensland Australia were determined.
Radiata pine treated with an ammoniacal copper quaternary preservative (ACQ) (1.56% m/m a.i.) and copper chrome arsenate (CCA) (...
R Wakeling
Laboratory methods for assessing the resistance of wood plastic composites to fungal attack.
2006 - IRG/WP 06-20340
Wood plastic composites (WPC’s) have many attractive material features including dimensional stability and resistance to moisture, but the wood in these materials remains susceptible to fungal attack. Assessing WPC decay resistance in laboratory trials has proven difficult because the slow moisture sorption characteristics of this material do not allow for sufficient fungal attack over the trad...
J J Morrell
Field Tests on Poles. A report from practice
2006 - IRG/WP 06-20343
A routine field inspection of some 1000 creosote poles during summer 2005 in northern Jutland, Denmark. The routine inspection was done by hammering, Pilodyn testing and taking core samples with a Matson Borer. Additionally a drill resistance measurement was done with a device consisting of the drill machine with a long, flexible steel needle with 1,5mm diameter and the measuring computer/battery-...
A Peylo, C-G Bechgaard
Performance of boron-treated radiata pine in above ground field tests in New Zealand
2006 - IRG/WP 06-30406
Boron treatment was approved for exterior, above ground use in New Zealand in 1958, provide treated commodities were painted with a three-coat paint system. Above ground tests of rail units and L-joints were established at the NZ Forest Research Institute (now Scion) between 1967 and 1980 to monitor performance of boron treatment in relation to that of untreated and CCA-treated timber.
Results sh...
M Hedley, D Page
Above and Below-Ground Depletion of Copper, Chromium and Arsenic from Pinus radiata and Fagus sylvatica at Thirteen Test Sites in New Zealand and Australia
2006 - IRG/WP 06-30402
The objective was to determine the significance of site and wood species on preservative depletion for a copper chrome arsenate preservative (CCA) from 20 x 20 x 500 mm field test stakes after 5.5 and 4.5 years for pine and beech respectively. At least 5 sacrificial stakes were used to produce site means. Site and wood species had a major effect on copper, chromium and arsenic loss from CCA treate...
R Wakeling
Surface and system treatments of wood for outdoor use
2006 - IRG/WP 06-30412
The project “Surface and system treatment of wood for outdoor use” was initiated the summer 2001. The project evaluates environmentally friendly preservatives and water borne coating systems, to find the best protection for timber indented for outdoor use. The wood species selected as test material were pine and spruce. The different treatments were exposed in several outdoor accelerated tests...
B Jacobsen, F G Evans
Wood plastic composites from modified wood. Part 2 - Durability in laboratory decay tests
2006 - IRG/WP 06-40353
The decay resistance of wood plastic composites, WPCs, was tested according to modified versions of AWPA E10 (soil-block test) and ENV 807 (tests in three un-sterile soils, terrestrial microcosms, TMCs). The WPC materials were conically extruded profiles with 30% polypropylene content. The 70% wood content was untreated Scots pine sapwood, acetylated pine and heat treated Norway spruce, respective...
M Westin, P Larsson Brelid, M L Edlund, G Alfredsen
Laboratory Leaching Tests to Study the Effects of Post-Treatment Storage Periods on CCA Leachability and Fixation in Treated Permeable and Refractory Malaysian Hardwoods
2006 - IRG/WP 06-50240
The biological resistance and environmental safety of CCA-treated wood relies on the extent of post-treatment storage fixation of CCA in wood prior to being utilized. A study on the comparative leachability (fixation) of CCA-treated refractory and permeable heartwoods of 3 Malaysian hardwoods subjected to different post-treatment storage (fixation) periods of up to 4 weeks, at 2 laboratory leachin...
A H H Wong, H C Lai, N P T Lim
Phenol oxidase activity and one-electron oxidation activity in wood degradation by soft-rot deuteromycetes
2007 - IRG/WP 07-10615
Wood degradation, one-electron oxidation activity as assayed by ethylene generation from 2-keto-4-thiomethylbutyric acid (KTBA), and phenol oxidase activity were measured in cultures of six deuteromyce fungi, with glucose or wood as the carbon source. The four fungi that degraded Japanese beech wood had higher one-electron oxidation activities in wood-containing cultures than in glucose-containing...
H Tanaka, M Yamakawa, S Itakura, A Enoki
Accelerated assessment tests of new termiticides
2007 - IRG/WP 07-20353
One of the biological agents, which cause major damage to wood in Spain, is the subterranean termites.
The systems used for controlling termites don’t eradicate them, and the products presently used to treat wood against them, due to their toxicity and their persistence in the environment, could be prohibited in the near future in Europe as consequence of the 98/8/EC Directive (usually called t...
M T Troya, M J Prieto, D Lorenzo, F Rubio
Wood decay fungi from New Zealand ‘leaky’ buildings: PCR identification and laboratory decay tests of wood preservative-treated Pinus radiata (Part 1)
2007 - IRG/WP 07-10620
Fungi colonising Pinus radiata D. Don framing timber of ‘leaky’ New Zealand buildings were isolated to produce pure cultures. Mycelia from these cultures on agar media were collected to extract DNA. To identify the fungi to the species level, polymerase chain reaction (PCR) with primer pairs ITS1-F and ITS4 were performed followed by sequencing of the internal transcribed spacer (ITS) region. ...
D Stahlhut, R L Farrell, R Wakeling, M Hedley