Your search resulted in 942 documents. Displaying 25 entries per page.
Leaching tests - A paper for discussion
1973 - IRG/WP 221
J W W Morgan
Plastic-coated marine piling in Los Angeles Harbour
1984 - IRG/WP 4105
G Horeczko
Soft rot decay of 23 CCA-treated hardwoods from Sabah, Malaysia, in ground contact in Australia
1986 - IRG/WP 1280
The performance against soft rot decay of 23 CCA-treated hardwoods from Sabah, Malaysia, was examined after 20 months in ground contact at Pennant Hills, Australia. The results indicate that between these species soft rot decay is excluded by different levels of CCA salt suggesting that the threshold level for exclusion of soft rot in these hardwoods is a function of anatomical structure/ultrastru...
R S Johnstone
Field and laboratory studies on anti-sapstain preservatives
1982 - IRG/WP 3205
The field tests included 11 different anti-sapstain preservatives and were carried out at different sawmills in southern Sweden. Drying conditions, climate and the local fungus flora were not identical for the different preservatives and comparisons between the preservatives should therefore be made with caution. Results obtained in the field tests are, however, in relatively good agreement with t...
M-L Edlund, B Henningsson
A collaborative test to determine the efficacy of poyurethane coatings on wood samples exposed in the marine environment. 1st Interim Report
1988 - IRG/WP 4145
Wood samples coated with elastomeric polyurethane (ca. 50 mils thick) were exposed for up to 2 years in 12 tropical and temperate marine test sites with known teredinid, pholad and/or crustacean infestations. All uncoated control samples were destroyed or partially destroyed. Polyurethane-coated samples were not attacked, the surfaces of the coating were sound and the polyurethane adhered well to ...
R A Eaton
Natural durability of some common Indian timbers and marine plywood against biodeterioration in Kochi waters (India)
1992 - IRG/WP 92-4177
Panels of thirty-eight timber species and marine plywood were tested in Kochi harbour (South-west India) for periods ranging from 3 to 21 months, so as to evaluate their natural resistance against marine borers. Results indicate that all the timber species studied are non-durable, 6 of them having undergone more than 50% internal destruction within 3 months; 14 species in 6 months, 13 species and ...
L N Santhakumaran, M V Rao
A field test with Benzotar, an industrial residue, as a wood preservative
1985 - IRG/WP 3349
Benzotar, a residue of production of benzoic acid, was tested in field as a wood preservative. Results, after 6.5 years of exposure, showed that this product presents properties that improve the performance of wood in ground contact. This paper describes these results and presents a discussion an some aspects of its potential utilization in Brazil....
S Milano, L R Silva
Sub-group on Basidiomycete tests: Responses to proposals for programme of work
1980 - IRG/WP 2137
A F Bravery
Standardisation of tests of toxicity of preservatives to soft rot fungi
1978 - IRG/WP 2119
J G Savory
Performance of CCA treated Eucalyptus round ties
1985 - IRG/WP 3342
After 5.5 years of field exposure in the south of Brazil round Eucalyptus ties treated with CCA type A Oxide (OSMOSE K-33-A) preservative with retentions from 12 to 14 kg/m³ (0.75 to 0.873 PCF) (active ingredient basis) are performing very well. No decay or insect attack was observed in the 100 ties in test in real conditions of use; 10% of ties show incipient checking (what is a natural trend of...
V J Carlos, F R Niederauer, J P P Wehr
Incorporating insect behaviour in standard tests of wood preservatives - A possible way to reduce pesticide loadings
2000 - IRG/WP 00-20190
The application of wood preservatives to protect timber against insect infestation is common practice world wide. The effectiveness of wood protecting insecticides is usually determined in various standard tests. Depending on the target pest species and the test method, larvae of different developmental stages and sizes or adult insects are exposed artificially to the insecticide-treated commodity...
H Hertel, R Plarre
Water-borne preservative marine trials in Western Canada
1981 - IRG/WP 470
Red pine boards treated with chromated copper arsenate, ammoniacal copper arsenate, copper zinc arsenic additive, a modified ammoniacal copper arsenate, and zinc arsenic additive, have been installed in a marine field test at West Vancouver, British Columbia. After two and a quarter years exposure, all the test samples are in excellent condition with the exception of those treated with the zinc ar...
J N R Ruddick
Correlation between a laboratory bioassay and field trial conducted to determine the termiticidal effectiveness of bifenthrin
2002 - IRG/WP 02-20248
Details are given of a laboratory bioassay and field trial undertaken to determine the termiticidal effectiveness of the synthetic pyrethroid bifenthrin, when impregnated into Pinus radiata D. Don sapwood specimens. Results show a strong correlation between the laboratory and field methods of evaluation. Protection threshold limits obtained were the same for the two test species of termite employe...
J W Creffield, K Watson
Antagonistic effect of Trichoderma spp. against Serpula lacrymans in the soil treatment test
1991 - IRG/WP 1473
Soil treatment tests for preventing growth of Serpula lacrymans were conducted using Trichoderma spp. as antagonists. Soil specimens tested were Kanuma-soil without organic matter and the horticultural soil which was collected from the test site of the stake test. Perfect efficacy of treatment with Trichoderma spp. was shown when the horticultural soil without sterilization was used as a soil spec...
S Doi, A Yamada
36 years of wood preservative tests in Tanzania
1992 - IRG/WP 92-3731
The performanee of major wood presevatives which are used widely commereially are given. These include creosote, CCA's and 5% Pentachlorophenol dissolved in heavy industrial diesel. Tests are conducted at three ecologically different using pine stakes. Results show that the striking performance of creosote and CCA's is noticeable at above 128 kg/m³ and 16 kg/m³ respectively....
K K Murira, P F Nangawe
Field trials on preserved timber out of ground contact
1978 - IRG/WP 3154
This report describes two different field trials studying the performance of preservative treatments on timber exposed to the weather, but above the ground. Results are presented on the protection afforded against decay, and on the efficiency of water-repellent preservative treatments in controlling the uptake of moisture by the timber. Proposals for a standard field test system are briefly discus...
D F Purslow, N A Williams
Transmission poles with sub-standard retentions protected by Field Liners outperform standard poles in service
1997 - IRG/WP 97-40095
Eucalyptus cloeziana 12m transmission poles were treated with sub-standard creosote retentions of 80kg/m3 and Field Liners were fitted to the poles before they were placed in service at Umbumbulu, Kwazulu Natal. Poles treated with standard creosote retentions of 130kg/m3 but without Field Liners were also placed in service in the same area. Core samples were taken from both groups of poles after 1...
M R Behr, G D Shelver, A A W Baecker
Methods for testing fumigant efficacies against termites
1986 - IRG/WP 1297
Methodologies for testing fumigants against termites are reviewed and factors needed to be taken under consideration for standardization listed. Toxicity should be defined by both direct exposure to the gas and under more practical "barrier" conditions which include test enclosures simulating abiotic surroundings of the termites, i.e. wood, nest material, etc. To observe latent effects, mortality ...
N-Y Su, R H Scheffrahn
Performance of treated and untreated sawn fence posts of Scots pine and Norway spruce
2000 - IRG/WP 00-30247
Sawn fence posts are a rather important product and the objective of this trial was to assess their durability. In 1985 a field trial with treated and untreated fence posts of Scots pine (Pinus sylvestris L.) and Norway spruce (Picea abies (L.) Karst.) was set out at the test field in Ultuna, Uppsala, Sweden. The posts had a dimension of 75 x 100 x 1400 mm3. The preservatives applied were a CCA, a...
Ö Bergman
2nd IRGWP - Questionnaire on the state of pollution control in the field of wood preservation (Introductory letter)
1981 - IRG/WP 3184
H Willeitner
The variability of preservative distribution in test blocks
1973 - IRG/WP 220
The techniques for the assessment of likely effectiveness of preservative systems have long been the subject of much discussion. The whole field has recently been reviewed by Hilditch and Hamblyn (1971) who described in detail many of the laboratory test procedures used, but who also indicated the deficiencies in many of these techniques. It has long been the view of many associated with the wood ...
F W Brooks, M R Gayles, R W Watson
Effects of methoprene on Coptotermes formosanus (Isoptera: Rhinotermitidae)
1987 - IRG/WP 1322
Methoprene affected differentiation and survival of Coptotermes formosanus Shiraki in laboratory studies. At 5, 9, 13, and 17 weeks, superfluous intercastes and presoldiers were produced when termites were allowed to feed on concentrations of 1,000 and 2,000 ppm methoprene in wood blocks. Colony numbers were significantly reduced after 13 and 17 weeks of exposure to the insect growth regulator. Te...
S C Jones
A case for adopting a standardised protocol of field and laboratory bioassays to evaluate a potential soil termiticide
2003 - IRG/WP 03-20275
The rationale for adopting a new approach to the field testing of potential soil termiticides is advocated on the grounds that current testing methods are limited to termite bioassays and do not address quantitatively the persistence and bioavailability of soil termiticides to foraging subterranean termites over time and in different soil types. Furthermore, the present testing regimes assume fiel...
J R J French, B M Ahmed
The efficacy of polyurethane coatings on wood samples exposed in the marine environment. Final Report -10 Year Assessment
1996 - IRG/WP 96-10170
The results of an IRG collaborative marine trial to investigate the long-term permanence and efficacy of polyurethane coatings against marine borers are reported. PU-coated wood samples were exposed at a range of sites from tropical to cold temperate locations. The marine borer species present at the sites included teredinids, pholads, limnoriids and sphaeromatids so that each site offered its own...
R A Eaton
2nd IRGWP - Questionnaire on the state of pollution control in the field of wood preservation
1981 - IRG/WP 3185
H Willeitner