Your search resulted in 1183 documents. Displaying 25 entries per page.
Soft rot - Soil burial - Tests. Influence of the water content of the soil on wood decay
1972 - IRG/WP 212
The decay of wood samples buried in the soil is influenced by various factors. Decisive are the water content, the content of organic substances, pH-value content of mineral nutritive substances etc. of the soil. For the tests, carried out by the EMPA until now, it was always started with a water content of 35%, refered to the dry weight of the EMPA-soil = 75% of its water capacity. In order to in...
O Wälchli
Environmentally benign biological wood preservatives by Streptomyces rimosus, SC-36
1997 - IRG/WP 97-10196
Microbiocides obtained from mutant culture Streptomyces rimosus SC-36 were evaluated for their abilities to inhibit the growth of brown-rot, soft-rot, white-rot, and sapstain fungi on wood. The test fungi were the brown-rot fungi Antrodia carbonica, Gloeophyllum trabeum, Neolentinus lepideus, and Postia placenta; soft-rot fungi Chaetomium globosum, Paecilomyces variotti, Phialocephala dimorphospor...
S C Croan
Effect of fumigant residue in aerated wood blocks on the spore germination of decay fungi
1991 - IRG/WP 2382
Fumigants are increasingly used in several countries for remedial treatments of transmission poles to increase the service life. The present study was initiated primarily to test the remaining toxic effects of spruce (Picea rubra) wood, fumigated with chloropicrin (trichloronitro methane) or MIT (Methyl isothiocyanate) after long period of aeration, on the spore germination of decay fungi. This st...
J Bjurman, B Goodell
Long-term efficacy of wood dip-treated with multicomponent biocides
2005 - IRG/WP 05-30379
Biocides designed for prevention of indoor mold growth on wood-based materials need to provide long-term protection under conditions of high humidity. Specimens of kiln-dried southern pine and unseasoned southern pine, aspen, and Douglas-fir were dip-treated with borate-dimethylcocoamine (DMCA) supplemented with voriconazole, thiabendazole, or thujaplicin and evaluated at 4-week intervals for inhi...
C A Clausen, V W Yang
A chemical and mycological evaluation of fused borate rods and a borate/glycol solution for remedial treatment of window joinery
1983 - IRG/WP 3225
The possibility of using fused borate rods (Impel Borpatron) and a borate/glycol solution (Boracol-40) for depot impregnation of window joinery has been examined in a co-operative project between The Swedish Forest Products Research Laboratory, The Swedish University of Agricultural Sciences and Prolignum AB. The fused Impel rod is a glassy rod composed of disodium octaborate which readily dissolv...
M-L Edlund, B Henningsson, A Käärik, P-E Dickèr
Creosote for wood preservation
1971 - IRG/WP 36
By creosote one usually means coal tar creosote, although there are creosotes of other origin. For example, wood tar creosote is a product of wood distillation. It is, in fact, in this connection that the word 'creosote' was first used. Early in the nineteenth century the oily product obtained by distilling wood was said to have an odour which resembled 'smoked meat&...
Anonymous
Soluble nutrient content in wood and its susceptibility to fungal discoloration and decay in above ground and ground tests
2000 - IRG/WP 00-10336
The objective of this comprehensive study was to reveal the impact of soluble nutrients in wood on its susceptibility to fungal discoloration and decay in various tests, which is important for the test methodology and standardisation. Seven tests were carried out including pure culture above and ground contact tests, above ground field test and laboratory ground contact tests. The samples containi...
O M Caballero, N Terziev
A below-ground exposure method for determining the resistance of woody and non-woody materials to attack by subterranean termites
1993 - IRG/WP 93-10012
With existing field test procedures, in which specimens are installed vertically to some of their length into the ground and spaced out from each other ("grave-yard" tests), variations in the rate of contact by termites between replicates can be common. Mechanical damage to specimens during inspection and re-installation may also be difficult to avoid. A new field test method, evaluated in Austral...
M Lenz, J W Creffield
Treatment details for the field experiment to determine the performance of preservative treated hardwoods with particlar reference to soft rot
1977 - IRG/WP 384
These notes are compiled to complement and supplement Document No: IRG/WP/367 which described the plan for the treatment of the stakes, using a CCA preservative, for the field experiment. This document gives extra details of the treatment characteristics of the different timber species and as such may give IRG members useful information on the sapwood permeability of a range of hardwoods. The repo...
F W Brooks, M R Gayles
Determination of absorption, accumulation and transport of copper in mycelium of some wood decay fungi
1999 - IRG/WP 99-10323
Copper compounds are common wood preservatives. However, tolerance of some wood decay fungi to copper compounds has been observed recently. Therefore, we tried to elucidate possible causes of this phenomenon. We investigated uptake, accumulation and secretion of copper in the mycelium of potentially copper tolerant fungi (Antrodia sp.) and non tolerant fungus Trametes versicolor. We observed that ...
F Pohleven, S Breznikar, P Kalan, M Petric
Evaluation of the pulsed-current resistance meter (Shigometer®) for determination of the internal condition of utility poles
1979 - IRG/WP 2128
A number of Telecom poles, which had been removed from service to be replaced by a radio link, were inspected using an electrical resistance meter (Shigometer®). These poles were creosoted, non-durable Victorian species in service in New South Wales. Six of these poles, chosen to represent various internal conditions typical of the range of the population tested, are discussed here. Data, from tr...
J D Thornton, W G Seaman, M McKiterick
Serpula lacrymans, The Dry Rot Fungus and its Tolerance towards Copper-based Wood Preservatives
2005 - IRG/WP 05-10555
Serpula lacrymans (Wulfen : Fries) Schröter, the dry rot fungus, is considered the most economically important wood decay fungus in temperate regions of the world i.e. northern Europe, Japan and Australia. Previously copper based wood preservatives were the most commonly used preservatives for pressure treatment of wood for building constructions. Because of a suspicion about tolerance toward cop...
A C Steenkjær Hastrup, F Green III, C A Clausen, B Jensen
L-joint trials: Part 2: The relationship between colonisation by decay fungi and long-term performance
2002 - IRG/WP 02-20251
Many of the L-joint trials conducted at BRE were assessed during the early stages to establish the rate of colonisation by fungi, principally basidiomycetes. At that time, a system of assessment incorporating colonisation studies was proposed for inclusion within the European Standard EN 330 but was rejected for the final version of the standard. The long-term trials associated with the colonisa...
J K Carey
Durability of Bamboos in India against termites and fungi and chemical treatments for its enhancement
2005 - IRG/WP 05-10553
Bamboo is a very important forest resource that benefits the life of people in a myriad ways including meeting the need for structural uses like posts, pole fencing, scaffoldings, house building, etc. Although it is one of the strongest structural material available, often succumbs to fungal decay and biodeterioration by insects (termites and powder post beetles) during storage and usage. Studies...
O K Remadevi, R Muthukrishnan, H C Nagaveni, R Sundararaj, G Vijayalakshmi
Resistance of painted wood to mould fungi. Part 3. The effect of weathering, wood substrate and fungicides on mould growth
1998 - IRG/WP 98-10284
The effect of 6 month outdoor weathering on the resistance of acrylate paint systems on different types of pine and spruce sapwood to mould fungi was studied. Dipping into the preservative prior to painting, a primer with and without a fungicide (propiconazole + IPBC 0.50 + 0.2%) and a topcoat with and without a fungicide (propiconazole + IPBC 0.25 + 0.12%) were combinations of the treatments stud...
H Viitanen, P Ahola
Generation of hydroxyl radical by the brown-rot fungus, Postia placenta
1988 - IRG/WP 1360
In an electron spin resonance (ESR) survey of various liquid cultures and wood slivers innoculated with the brown-rot fungus, Postia placenta, the spin trap dimethyl-l-pyrroline N-oxide (DMPO) was used to detect the presence of the hydroxyl radical. The ESR spectra for the paramagnetic DMPO- hydroxyl radical adduct was observed in (1) nitrogen-limited, liquid cultures having 1.0% glucose or 0.1% c...
B Illman, D C Meinholtz, T L Highley
Soft rot decay in acetylated wood. Chemical and anatomical changes in decayed wood
2002 - IRG/WP 02-40231
Acetylated Beech (Fagus sylvatica) and Scots Pine (Pinus sylvestris) wood were studied in soil beds under laboratory conditions for longer periods. High mass losses and dynamic MOE losses were measured in non-acetylated wood and at lower weight percent gains (WPG). Rapid losses of lignin, holocellulose and ?-cellulose occurred in non-acetylated beech wood and no losses were detected at the highest...
B Mohebby, H Militz
Which fungi should be included in the laboratory evaluation of anti-stain chemicals?
2001 - IRG/WP 01-20236
Test fungi for efficacy tests of anti-stain formulations were selected based on the assumptions that test fungi should be fungicide-tolerant antagonists and fungi resistant to both fungicides and fungicide- tolerant antagonists, and such fungi should be re-isolated from treated samples with the highest fungicidal concentration used for laboratory evaluation of fungicides. This paper discusses the ...
Hyung-Jun Kim, Jae-Jin Kim, Gyu-Hyeok Kim
Interim report on the use of borate rods for the in-situ treatment of joinery
1980 - IRG/WP 3159
In the U.K. in recent years, it has been recognised that there is a major need for in-situ treatment of joinery at risk from or showing the early signs of decay. Several techniques have been developed to provide such a treatment, one of which is based on the insertion of anhydrous borate glass rods. The tests in hand are long term and this report is confined to the mycological isolation data from ...
D J Dickinson
Use of wood-decay fungi for disposal of PCP-treated wood
1995 - IRG/WP 95-50040-33
Although PCP has been classified as a priority pollutant, PCP-treated wood products are currently allowed to be disposed of as ordinary solid (non-hazardous) wastes in the US. Non-regulated disposal of these materials is allowed because PCP concentrations in extracts from PCP-treated products such as utility poles and crossarms, determined by the Toxicity Characteristic Leaching Procedure (TCLP) h...
R T Lamar
Fenton's reagent as a modification tool in brown-rot decay
1996 - IRG/WP 96-10155
A biomimetic approach was used to clarify the role and importance of the Fenton-type reaction in the carbohydrate degradation by brown-rot fungi. Spruce sawdust and microcrystalline cellulose were modified in the H2O2/Fe(II) treatment. The degree of hydrolysis of the pretreated spruce sawdust was clearly increased with the complete cellulase (Econase), purified endoglucanase from Trichoderma reese...
M Rättö, A-C Ritschkoff, J Buchert, L Viikari
Observations on the performance of copper-based wood preservatives in fungal cellar (soil-bed) tests
1994 - IRG/WP 94-20047
Fungal cellar (soil-bed) tests are considered to be an important tool for the evaluation of the performance of ground contact wood preservatives. Facilities of this type have been established world wide although caution has been exercised in their introduction into standard testing methods for the approval of wood preservatives. This is the result of concerns over the variability in the biological...
G R Williams, D Rudolph, M E Hedley, J A Drysdale, R F Fox
Effect of cyclic change of temperature on fungal growth and mass loss
1994 - IRG/WP 94-10065
For estimating the effect of cycling change of temparature on fungal growth, four Japanese species, sugi (Cryptomeria japonica), hinoki (Chamaecyparis obtusa), akamatsu (Pinus densiflora) and buna (Fagus crenata), four fungal species, Tyromyces palustris, Gloeophyllum trabeum, Coriolus versicolor, Pycnoporus coccineus, and five temperature conditions, 10, 20, 27, 35°C and cyclic temperature (20°...
K Suzuki, K Okada
On the effectiveness of fumigants against wood-destroying insects and fungi in wooden cultural property
1993 - IRG/WP 93-10030
Based on a survey of the history of the use of fumigants the actual agents are mentioned in relation to their biogenic effect on wood-destroying insects and fungi as well as their corrosive behavior on cultural property. Furthermore the conditions for the use of reactive fumigants in buildings are discussed. Trials to control wood-destroying insects and fungi by nitrogen and bromomethane are the m...
W Unger, A Unger
Unsuitability of the limiting dose as a criterion for assessing the toxicity of preservatives to wood-destroying fungi
1974 - IRG/WP 243
In the majority of methods for investigating preservatives for wood-destroying fungi their toxicity is assessed by determining what is called the "limiting dose". This normally denotes a range of preservative solution concentrations or retentions of dry preservative in the timber, the lower value serving to indicate the amount of preservative at which is observed the expected effect, e.g. the grow...
D A Belenkov