Your search resulted in 303 documents. Displaying 25 entries per page.
Commercial antisapstain chemicals in New Zealand
1980 - IRG/WP 3142
Almost all sawn timber of exotic softwoods (principally Pinus radiata) and a large proportion of indigenous sawn timber receives an antisapstain chemical treatment to prevent fungal degrade during subsequent seasoning, storage, or transportation (if exported). Antisapstain chemicals are also widely used to protect freshly peeled round produce during drying. A further, specialised, use is as the fu...
J A Butcher
Fungicidal effectiveness of amended alkylammonium compound
1987 - IRG/WP 3421
Amendment of didecyldimethylammonium chloride was attempted to improve its fungicidal effectiveness and properties of treating solutions. Addition of copper definitely increased effectiveness in controlling wood decay fungi, although metal corrosiveness and stability of treating solutions was unsatisfactory. Further amendment with stabilizer(s), anticorrosive agent(s) and sequestering agent(s) res...
K Tsunoda, K Nishimoto
The performance in the sea of seven experimental piles after sixteen years at Port Douglas, North Queensland
1989 - IRG/WP 4151
After 16 years at Port Douglas, two double-treated Pinus radiata piles were in excellent condition, a CCA-treated Pinus elliottii pile was in good condition other than for a confined streak of teredinid attack, while two CCA-treated and two untreated turpentine piles were moderately to severely attacked by Sphaeroma in the tidal zone. The marine borers collected were Sphaeroma terebrans, Martesia ...
L J Cookson, J E Barnacle, C N McEvoy
The quantitative determination of N-cyclohexyl-diazeniumdioxide (HDO) containing compounds in treated wood using TD-GC-MS
2001 - IRG/WP 01-20223
Last year we presented the paper (IRG/WP/00-20201) "Determination of N-cyclohexyl-diazeniumdioxide (HDO) containing compounds in treated wood using GC-MS". Based on the intensive discussion at the meeting, the first experiences made with the calibration of the system for this application will be reported. For the quantitative determination of N-cyclohexyl-diazeniumdioxide in treated wood, milled m...
P Jüngel, J Wittenzellner, E Melcher
Anti-bluestain treatment developed for log cargoes stacked in subtropical conditions for export on logging ships
1995 - IRG/WP 95-30081
Subtropical environments impose conditions of temperature, humidity and rainfall which are optimal for growth of bluestain fungi. Unprotected softwoods under such conditions become bluestained three days after felling. Furthermore, intervals between harvesting and delivery to export marketplaces exceed the 30-day protection periods attributed to anti-bluestain formulations in such conditions. Thes...
A A W Baecker, M Behr, G D Shelver
A study on the effectiveness of didecyldimethylammonium chloride to protect wood from attack by termites
1993 - IRG/WP 93-30009
A laboratory bioassay was conducted on the ability of didecyldimethylammonium chloride (DDAC) to protect Pinus radiata D.Don wood specimens from attack by two of Australia's most economically important species of subterranean termite, Mastotermes darwiniensis Froggatt and Coptotermes acinaciformis (Froggatt). Sapwood specimens of Pinus radiata, treated to achieve nominal retentions of 0.5...
J W Creffield
Development process of a new anti-sapstain formulation and its present status with the relevant problems
2001 - IRG/WP 01-30257
An anti-sapstain formulation, which contains 2-(thiocyanomethylthio)benzothiazol (TCMTB) and methylene-bis-thiocyanate (MBT) as active ingredients, was developed by a technical agreement with Buckman Laboratories (Memphis, TN, USA) as an alternative to chlorinated phenols for the Japanese market. The formulation was commercialized as BAM 12 years ago. As anti-sapstain treatment is commonly conduct...
K Nobashi, Y Nomura, K Tsunoda
Isolation and identification of non-decay fungi affecting the performance of alkylammonium compounds
1993 - IRG/WP 93-10020
The isolation of DDAC tolerant fungi was carried out on lumber treated with a range of antisapstain chemicals containing DDAC as one of their active ingredients. The tolerant fungi were selected by using malt media spiked with DDAC (100 and 2500 ppm). Isolations were tentatively identified into a range of fungi commonly found associated with wood deterioration (i.e. Penicillium sp. and Trichoderma...
A K Doyle, J N R Ruddick
Biological resistance of steam-compressed wood pretreated with boric compounds
1999 - IRG/WP 99-30190
Wood compression under heating is aimed to enhance dimensional stability and surface hardness. Preservative treatment with an appropriate chemical is additionally required for the protection of wood against biological agents under hazardous service conditions. Boron pretreatment of compressed wood was targeted to a mutual benefit of increasing biological resistance of compressed wood as boron was ...
M K Yalinkilic, W Dwianto, Y Imamura, K Tsunoda, M Takahashi
Marine performance of preservative treated Southern pine panels. - Part 1: Exposure in Newport, Oregon
2000 - IRG/WP 00-10368
The ability of selected wood preservative to protect southern pine sapwood against marine borer attack was evaluated over a 6 year period in Yaquina Bay, Oregon. The site exposed the wood to potential attack by both Teredo navalis and Limnoria spp. Both creosote and CCA provided excellent protection at moderate retentions, while ACQ produced slight differences in performance depending on the coppe...
R G Rhatigan, J J Morrell, A R Zahora
Development of threshold values for boron compounds in above ground exposures: Preliminary trials
1998 - IRG/WP 98-30179
Boron is increasingly used both as an initial and remedial treatment for protecting wood against fungal and insect attack. While establishing lethal dosages for boron against insects through feeding tests is relatively simple, establishing thresholds for fungal attack poses more of a challenge. Tests using boron dispersed in agar artificially surround the fungus with both boron and excess nutrient...
J J Morrell, C M Freitag, S Unger
The influence of staining fungi on the decay resistance of wood treated with alkylammonium compounds
1984 - IRG/WP 3308
Although found to be very effective in laboratory tests, alkylammonium compounds (AAC's) have failed to perform as well in field stake tests. Examination of leachability showed that this was not the cause. The present study investigated the possibility that staining fungi, (which have been observed to rapidly infect the field stakes), degrade the AAC wood preservative. Soil-blocks were tr...
J N R Ruddick
Analysis of volatile organic compounds (VOC's) from Trichoderma spp.: effect of media composition on VOC production and level of inhibition of wood decay fungi
1997 - IRG/WP 97-10207
Production of volatile organic compounds (VOC's) by two Trichoderma isolates grown on either malt extract or minimal media was examined and statistically assessed to identify which VOC's were predominantly produced on each of the two media types. The VOC's were captured onto chromatographic absorbent from above the cultures of the fungi before being analysed by integrate...
A Bruce, R E Wheatley, C Hackett, A Kundzewicz
Facts or feelings to decide on wood preservation
1988 - IRG/WP 3480
Feelings against the use of chemicals in general and of wood preservatives in special get increasing importance within the population. They are based mainly on an uncertain fear for unknown health risks and vary between different countries and regions. No straight line can be traced. Nevertheless feelings often will influence a decision against chemical wood preservation. Therefore they have to be...
H Willeitner
Recovery of copper, chromium, and arsenic compounds from the waste preservative-treated wood
1991 - IRG/WP 3651
In Japan, about 40 percents of waste wood is incinerated and the residue is dumped into the landfill site. The waste preservative-treated wood, which is mixed in nontreated wood, is incinerated in the same way, too. However, it will cause the serious problems that the gases contained with high concentration arsenic compounds are discharged from the smokestacks of the incineration facilities and th...
A Honda, Y Kanjo, A Kimoto, K Koshii, S Kashiwazaki
Chemical and biological investigations of double-vacuum treated windows after 5 years in service
1983 - IRG/WP 3219
In 1980 The Swedish Wood Preservation Institute initiated an investigation to study the degradation of TBTO and possible fungal attack in double-vacuum treated window joinery in service during 5 years. A hospital in Gothenburg was chosen that was built during 1969 to 1976. Both untreated and double-vacuum treated windows of Pinus sylvestris were used. A brown alkyl oil type paint (Nordsjö system ...
J Jermer, M-L Edlund, B Henningsson, W Hintze, S V Ohlsson
Bibliography on the use of boron compounds for the preservation of wood
1973 - IRG/WP 315
This bibliography is based on an earlier literature survey prepared by J. Thornton and Wm. E. Bruce (O.E.C.D. Document No. 27/DAS/CSI/M/91) which was enlarged and revised for a meeting in Paris in October 1968 (Document 27/DAS/CSI/M554) by Professor W. Bavendamm of Reinbek. The latter (1968) document with its 166 references has now been extended and brought up to date. Acknowledgments are due to B...
R Cockcroft, J F Levy
The production of extracellular hydrogen peroxide by some brown-rot fungi
1990 - IRG/WP 1446
The role of hydrogen peroxide (H2O2) has been discussed in the degradation of wood by wood-rotting fungi. The production of extracellular hydrogen peroxide was studied by detecting the oxidation of the chromogen 2,2'-azinobis(3-ethylbenzthiazoline-6-sulphonic acid) (ABTS) by H2O2 and horse radish peroxidase (HPR). ABTS and HPR were added to a solid wood based culture media. In this study ...
A-C Ritschkoff, L Paajanen, L Viikari
A laboratory evaluation of tributyltin ethanesulphonate as an aqueous fungicide in wood preservation
1983 - IRG/WP 3229
Toxic limit data, using both leached and unleached wood test blocks, are reported for aqueous solutions of tributyltin ethanesulphonate against four Basidiomycete fungi, Poria placenta, Gloeophyllum trabeum, Coriolus versicolor and Coniophora puteana. An in situ study of the tributyltin compound in Scots pine and ponderosa pine sapwood has been carried out, using the technique of 119mSn Mössbauer...
R Hill, P J Smith, J N R Ruddick, K W Sweatman
Fungitoxic effect of the quaternary ammonium compounds wood preservatives against the Ascomycetes and Deuteromycetes
1997 - IRG/WP 97-30138
Results of investigation on fungitoxic value of the three formulations of wood preservatives based on the quaternary ammonium compounds (lauryldimethylbenzylammonium chloride, lauryldimethylbenzylammonium bromide, alkylbenzyldimethylammonium chloride) in relation to the surface wood colouring (moulds) and soft-rot fungi have been presented. The agar-plate (screening) and agar-wood plate for mouldi...
J Wazny, P Rudniewski
A report of the Technical Recommendations documents for the Canadian Wood Protection and Preservation Facilities and an environmental study of storm water runoff from anti-sapstain treatment plants
1988 - IRG/WP 3478
With the completion of the Final draft of the Technical Recommendations (TR) documents for the Wood Preservation and Wood Protection Industry, there are naturally questions on what is expected from these documents and how Environment Canada and Provincial regulatory agencies may interact with the wood preservation industry. In general, it is expected that the Canadian Wood Preservation and Protect...
G Das, V N P Mathur
Migration of chlorothalonil and carbendazim in fruits stored in wood treated with the anti-sapstain formulation Tuff Brite C
1997 - IRG/WP 97-50097
Fruits and vegetables stored in treated wood boxes are in contact with the products used for the treatment. In order to obtain regulatory approval for incidental food contact it is necessary to determine the quantity of residues on these fruits or vegetables. When the active materials are used in agriculture it is required that residues found are below to the MRL fixed for these substances. In the...
J F Cooper, D Riboul, M De Vleeschauwer, T L Woods
Comparison of the anti-fungal efficacy of Cobra with drill perforation on oscillating pressure treated spruce transmission poles -Laboratory test
1988 - IRG/WP 3469
A laboratory method for measuring the depth of penetration of the fungicidal concentrations effective against basidiomycetes (brown rot) was developed. The tests on CCB oscillating pressure treated spruce transmission poles have shown that the depth of salt penetration can be increased by about 10 mm by a drill perforation before the impregnation. An even better penetration is reached, however, if...
E Graf, B Zgraggen
Reappraisal of some fungicides by the amended JWPA method
1992 - IRG/WP 92-3689
Organoiodine compounds which have been commercialized these years in Japan poorly performed as fungicides in the amended JWPA decay test (Standard 1, 1989) when applied to superficial treatment of timber. Because some parts of active ingredients seemed to disappear from the treated timber surface mainly due to the severe leaching cycles. This was prominently true for beech (Fagus crenata Blume) sa...
K Tsunoda
A quantitative weathering study of wood surfaces modified by chromium VI and iron III compounds
1989 - IRG/WP 2330
Thin veneers of Pinus radiata were treated with dilute aqueous solutions of chromium VI and iron III compounds and exposed to natural weathering for 35 days. Zero-span tensile strength and weight losses of treated veneers were compared with losses observed in untreated specimens In a study designed to demonstrate the applicability of strength and weight loss measurements to the rapid quantitative ...
P D Evans, K J Schmalzl