Your search resulted in 450 documents. Displaying 25 entries per page.
Preservation of wood composites with zinc borate
1995 - IRG/WP 95-30074
Inorganic borates such as boric acid, borax, disodium octaborate tetrahydrate, and zinc borate can be incorporated into wood composites such as waferboard to impart decay and insect resistance to the final product. Zinc borate is especially well suited for this application due to its efficacy and leach resistance. The paper summarizes the work performed to date in this area. The effects on strengt...
P E Laks, M J Manning
Principles behind the laboratory assessment of materials with subterranean termites - Recent perspectives and shifts in emphasis
1986 - IRG/WP 1291
Laboratory assessments of materials against termites aim to give an indication of the likely performance of materials in the field. To meet this objective, test procedures have to provide the conditions that promote the most vigorous activity of the insects. Implications of recent findings on inter- and intracolony variability in vigour, the need to monitor termite activity with differing types of...
M Lenz
Termite likes steamed larch wood
1995 - IRG/WP 95-10113
Steamed wood of Japanese larch (Larix leptolepis (Sieb. et Zucc.) Gord.) was preferably attacked by termites. Steam treatments have often been applied to Japanese larch wood for improving its penetrability or color. For preventing termite attack on steamed timber, we have to elucidate why termite likes it. Choice tests with Coptotermes formosanus Shiraki were conducted using larch boards steamed f...
S Doi, M Kubota, M Takahashi, T Yoshimura, A Adachi
Research studies on infecting behaviour of Fomes fomentarius (L. ex FR) Fr. and its physical control in the wood yards of the Hyrcanian (Caspian) forests of Ira
1996 - IRG/WP 96-10179
Due to illegal cutting, girdling and ringbarking many damages of tinder fungus (Fomes fomentarius (L. ex Fr) Fr.) are seen on beech, poplar, oak and birch at Hyrcanian (Caspian) forests of Iran. The beeches (Fagus orientalis Lipsky) are damaged highly and the beech community of Fagetum are infected from 800 meter altitudes at Gorgan (East of Caspian forests) to 600 meters altitudes at Gilan (West ...
P Niloufari
Glass splinters as physical termite barriers: Optimized material properties in use with and without insecticidal pretreatment minimizes environmental contaminations
1991 - IRG/WP 1476
The major advantage of physically acting barriers against termites using sand or cinder is to be impenetrable for a number of termite species by showing environmental compatibility in a high degree. The major disadvantage of these barriers is the ability of termites to build galleries over them. Glass or glass-like materials are showing optimum material properties: crushed to a particle size from ...
M Pallaske, A Igarashi
A case for ecosystem-level experimentation - A discussion paper
1986 - IRG/WP 1296
Although laboratory bioassays provide a first step in testing for potential termiticides and assist in formulating recommendations of these chemicals for regulatory agencies and users, they are not designed for predicting effects on natural populations (including humans) and on ecosystem-level features. To overcome this we need microcosm studies, carefully controlled experimental manipulations of ...
J R J French
Subterranean termite foraging behaviour and the development of baiting methods used for termite control by the Division of Forest Products
1994 - IRG/WP 94-10058
Given the premise that alternatives to current subterranean termite control measures using organochlorine insecticides and arsenic trioxide have been actively researched by our Division for over ten years, emphasis on baiting methods in controlling these termites has been a major facet of our research. Recently, the new Australian Standard (AS 3660 -1993) was released which outlined the use of phy...
J R J French, J W Creffield, B M Ahmed
An overview of the economic importance and control of termites in plantation forestry and wood preservation in Peninsular Malaysia
2000 - IRG/WP 00-10382
Both the plantation forestry and wood preservation industries in the tropical and sub-tropical belts of the world, exemplified by the humid equatorial Peninsular Malaysia, regard termites as major destructive pests of standing trees, various timber products and building timber structures. This paper is a compilation of information on these economically important structural pests encountered in bot...
L G Kirton, A H H Wong, Kee Suan Cheok
The use of the Sentricon Termite Colony Elimination System for controlling termites in difficult control sites in Northern California
2000 - IRG/WP 00-10361
Some termite elimination trials in Northern California with the Sentricon Termite Colony Elimination System are presented - one of a large establish-ment, one of a single family residence with a long history of termite damage, one with a single family residence where other chemical treatments had repeatedly failed, and one single family residence in which the termites had not reached the house but...
D H Kistner, R J Sbragia
Durability of Wood/Plastic Composites Made From Parthenium species
2002 - IRG/WP 02-40225
Previous study indicated that the natural chemical constituents of the guayule plant (Parthenium argentatum) improved some durability properties of wood when it was treated with resin extracted from guayule. At present, there are about a dozen species of Parthenium growing in the North American continent. P. argentatum is the only species with harvestable amounts of the rubber latex. Other specie...
P Chow, F S Nakayama , J A Youngquist, J H Muehl, A M Krzysik
Wood attacking insects in urban areas in Sao Paulo State - Brazil
1985 - IRG/WP 1267
From 1974 to 1984 the investigators of Wood Division (IPT) inspected, for insect attack, more than 1,500 buildings of several kinds: commercial, residencial and historical buildings, houses and industries. In all cases, IPT was asked to give advices on control and erradication. During that time three papers concerning this problem were published (Cavalcante, 1976; De Lelis, 1978; Zanotto & Can...
P A Zanotto, M D Canedo, D A T Lelis
Effects of chemicals used for ground-line protection of hardwood poles on termite attack
1988 - IRG/WP 1356
The majority of chemicals formulatet to protect the groundline of hardwood poles in Australia have been fungicides. Nine products were tested against Coptotermes lacteus attack to determine their value in preventing attack by subterranean termites. Results indicated that Busan, high temperature creosote, pigment emulsified creosote, copper naphthenate gel and "Blue 7" had a repellent effect on Cop...
R S Johnstone, R H Eldridge
Termite physical barriers: Current status of retrofitting Granitgard around 'mock-up' buildings
1994 - IRG/WP 94-10057
Two years ago a field experiment was designed and installed to evaluate the effectiveness of Granitgard, the commercial name of a grade of crushed granite rock, as a termite physical barrier when retrofitted around 'mock-up' buildings. The field station is located at Walpeup in the semi-arid mallee region of northern Victoria (360 km north of Melbourne), and there are several ind...
J R J French, B M Ahmed
Relationship between the bending strength and the degree of termite attacks on western hemlock by Coptotermes formosanus Shiraki
1990 - IRG/WP 1434
For the examination of the relationship between the bending strength and the degree of termite attacks, Western Hemlock (Tsuga heterophylla Sarg.) was used. Sixty specimens (4.5 x 4.5 x 82 cm³) were attacked by termites at the culture room of Coptotermes formosanus Shiraki. The termites were introduced on the central parts (10 cm) of specimens. In the case of the 2 points loading, the bending mom...
K Suzuki, T Tanaka
Detection of metabolic gas from termites using ceramic gas sensors
2001 - IRG/WP 01-20222
To evaluate termite attacks in wooden constructions by detecting the metabolic gas from termite colony, the basic performance of three types of ceramic gas sensors (odor-, methane- and hydrogen-selective sensors) was investigated. Four termite groups of different combinations of workers (100 to 1000) and soldiers (10 to 100) of Coptotermes formosanus Shiraki and a small specimen of Japanese red pi...
Y Yanase, Y Fujii, S Okumura, T Maekawa, K Suzuki, T Yoshimura, Y Imamura
The density factor in termite bioassays
1985 - IRG/WP 1252
The initial and final floor surface and food block surface actually used by termites in a small container were converted to estimates of "Living Space" and "Feeding Space" densities for 1/32 to 1½ g groups of termites. The termites were provided with blocks of blotter paper as a food supply. Except where 1½ g groups exhausted the food, the survival of termites was uniformly high (averaging >9...
G R Esenther
Biological resistances of wood-metaborate composites using the borax solution system
2001 - IRG/WP 01-30259
Combinations of wood and metaborate composite were prepared from sapwood specimens of Japanese cedar (Cryptomeria japonica) and the borax and metallic salts system using the diffusion-penetrated process. Wood-metaborate composites were produced as follows: water-saturated specimens were first impregnated by a saturated borax solution and then diffuse-penetrated with Zn2+, Ca2+, or Pb2+ solution. B...
Liang Lin, T Furuno
A real scale evaluation method and results on termite resistance of housing wall systems and floor framings
1999 - IRG/WP 99-10314
For evaluating the termite resistance of real scale houses especially housing wall systems and floor framings, a experimental building was prepared. After initial feeding of termite, this house was constructed. In this experimental building, several parts which were built by different wall systems and floor framing. The room temperature of these parts were controlled. Water can be provided in the ...
K Suzuki, K Okada, K Hagio, Y Tanaka
A note on the occurrence of Ametastegia glabrata (Fallén) in motorway fencing
1976 - IRG/WP 375
During a recent survey of motorway fencing in England, evidence of insect damage caused by one of the species of saw fly Ametastegia glabrata (Fallén) was found in a very small percentage (1.7 per cent) of CCA and creosote-treated posts. The observation is perhaps of more academic than of practical importance, but if control is desired, contact insecticide treatment of posts or selective weed-kil...
R Cockcroft, R W Berry
Laboratory trials of biological control agents against subterranean termites
1991 - IRG/WP 1475
To screen for potential termite control by microorganisms, 17 mold fungi included 3 pathogenic fungi and 7 basidiomycetes, were used to challenge the test termite species, Coptotermes formosanus and Reticulitermes speratus. Test fungi were allowed grow and completely in Petri dishes. To screen for potential termite control by microorganisms, 17 mold fungi included 3 pathogenic fungi and 7 basidiom...
K Suzuki
Biological degradation resistance of wood acetylated with thioacetic acid
1983 - IRG/WP 3223
Chemically, modification of wood is being considered as an alternative to conventional preservation by toxic chemicals. Acetylated wood has been reported to be quite resistant to most biodegrading organisms at weight percent gains (WPG) around 15-19. The conventional acetylation techniques with acethic anhyrdride result in generation of acetic acid. However, acetylation with thioacetic acid overco...
S Kumar, S C Agarwal
Northern oak wood and its damages in Iran
1988 - IRG/WP 1377
The Northern oak species of Iran designated Quercus castaneaefolia C.A.M. is distributed widely in caspian littoral. In natural conditions (healthy) has favourable quality and it is used mostly in rural construtions, sleepers, parquets, cross arms for electric and communication poles, it is used also indoor and window construction, benches and finally veneer. This wood in the case of sleepers and ...
D Parsapajouh, P Niloufari
An anti-termite formulation for soil treatment with natural products and its efficacy against Coptotermes formosanus Shiraki
2003 - IRG/WP 03-30319
An anti-termite formulation of an environmental conservation type for soil treatment was developed. The formulation was composed of decanoic acid (n-capric acid, an fatty acid derived from coconut oil with ten carbons) as an active ingredient and other natural products. Experiments to examine the efficacy of the formulation against Coptotermes formosanus Shiraki were conducted at the termite field...
S Yoshida, T Nakagaki, A Igarashi, A Enoki
Laboratory evaluation of JB-TB003 as potential bait toxicant against the subterranean termite, Coptotermes acinaciformis in Australia.
subterranean termite, Coptotermes acinaciformis in Australia
1997 - IRG/WP 97-10214
In this laboratory evaluation, Coptotermes acinaciformis actively attacked in the first week of testing Pinus radiata wood blocks (50 x 25 x 15 mm3) treated with concentrations of JB-TB003 (i.e. 25, 50, 100, 200 and 400 ppm); the blocks with highest concentration were the most attractive. Results were similar whether blocks were leached or unleached. The earliest mortality occurred in the 400 ppm ...
B M Ahmed, J R J French, A R Valcke, P Blunt
The effect of boric acid on the protozoan numbers of the subterranean termite, Reticulitermes lucifugus
1996 - IRG/WP 96-10148
Lower termites harbor in their guts populations of microorganisms known to be indispensable for their survival, being responsible, at least partially, for the digestion of cellulose, the main item of termites'diet. The Reticulitermes species in particular harbor in their hindguts some unique intestinal fauna, for instance protozoa belonging to the genera Pyrsonympha, Dinenympha and Trycho...
L Nunes, D J Dickinson