Your search resulted in 523 documents. Displaying 25 entries per page.
Field tests of molybdenum and tungsten baits for termite control
2004 - IRG/WP 04-30345
Molybdenum and tungsten compounds are slow acting to termites and show a high termiticidal efficacy. In our previous papers, we have already reported that those are useful as termiticidal ingredients of bait formulations.
The demand for natural rubber is still on the increase. However some kinds of termites inhabiting rubber plantations damage rubber trees and pose a serious threat.
To cope with...
Y Katsuda, K Nakayama, C Vongkaluang
Evaluation of Rosewood extractives as potential source for termite control
2003 - IRG/WP 03-30323
Rosewood (Aniba rosaeodora) is an extremely durable tropical timber species that has been widely used in the past in perfumery on account of its high proportion of essential oil. The aim of this study was to evaluate the efficacy of the extractives from rosewood as possible active ingredients for termite control.
Some rosewood sawdust has been extracted using different solvents and methods. The e...
M-F Thévenon, P Simonin, A Carrère, D Fouquet
Some practical implications from recent research on the fixation of CCA preservatives
1975 - IRG/WP 358
The mechanism of fixation of CCA preservatives is briefly described. If the temperature is increased during the primary fixation period, the formation of intermediate fixation compounds is less extensive. The length of the primary fixation period is of practical interest. It is determined by preservative composition and concentration, temperature and wood species. Diagrams are given for Pinus sylv...
S-E Dahlgren
Preservative treatment of wood-based composites with a mixture formulation of IPBC-silafluofen using supercritical carbon dioxide as a carrier gas
2003 - IRG/WP 03-40251
Wood-based composites treated with a mixture formulation of a fungicide, 3-iodo-2-propynyl butylcarbamate (IPBC) and a termiticide, silafluofen using supercritical carbon dioxide (SC-CO2) as a carrier solvent were tested for their resistance to decay and termite attack in the laboratory. The treatment solution was prepared by mixing both biocides (IPBC 10 + silafluofen 1) with a co-solvent, ethano...
K Tsunoda, M Muin
Termite resistance classification of some tropical and temperate species based on the laboratory choice test results against formosan termite, Coptotermes formosanu
2004 - IRG/WP 04-20291
The results of classification of termite durability were varied. We carried out
laboratory evaluation of the classification of termite durability on various species by
the choice test against formosan termite, Coptotermes formosanus. We classified five
grades (very sensitive to very resistant). According to our results, azobe, ipe, keruing,
intsia, kapur, yellow meranti, jarraah, malas, cypres...
K Suzuki
Implications for comparability of laboratory experiments revealed in studies on the effects of population density on the vigour in groups of Coptotermes lacteus (Frogatt) and Nasutitermes exitiosus(Hill) (Isoptera: Rhinotermitidae, Termitidae)
1983 - IRG/WP 1194
The vigour - survival. and wood consumption - of groups of Coptotermes lacteus and Nasutitermes exitiosus was measured when termites were kept at different population densities (g termites/mL) by changing group size and/or volume of the holding container. A characteristic pattern emerges for subterranean-like termite species. At low population densities (<0.01 g/mL) performance of termites impr...
M Lenz, R A Barrett, E R Williams
Resistance of two commercial cement-bonded rubberwood particle composites to decay and termites
2000 - IRG/WP 00-10338
Two types of cement-bonded rubberwood (Hevea brasiliensis) particle composites (tradenames: Cemboard and Primaflex in Malaysia), were evaluated for termite resistance (prevalent termite: Coptotermes curvignathus) in the field, and decay resistance (test white rot fungi: Schizophyllum commune and Pycnoporus sanguineus; test brown rot fungus: Gloeophyllum trabeum; test soft rot fungi: Phialophora fa...
A A H Wong
Is termite body size correlated with colony vigor?
1995 - IRG/WP 95-10130
Folk wisdom among termite researchers holds that the average body size (mass) of workers in a subterranean termite colony (Rhinotermitidae) is associated with the age and/or vigor of the colony. In particular, extremely large individuals are frequently thought to indicate a very old, or senescent, termite colony. However, there are very little data to support this assumption. It is also difficult ...
J K Grace, R T Yamamoto, M Tamashiro
Wood Preservation in Belgium
1981 - IRG/WP 3170
The report reviews wood preservation activities in Belgium and notes the number of authorized treatment depots has doubled during the past five years. It lists the timbers that are allowed to be used for joinery and constructional building purposes and the preservatives and treatments with which these timbers may be protected. In Belgium not only have the wood preservative product and its treatmen...
M Stevens, R Cockcroft
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
Wood preservation in Brazil
1978 - IRG/WP 3126
Wood preservation was stablished in Brazil by 1902 in order to provide treated sleepers for railways, since there was a shortage of durable hardwoods in area served by railways. The growing need of sleepers and poles together with the availability of Eucalyptus spp. contributed for the development of wood preservation. Many wood preservation plants started to be stablished in 1957, and in 1977 the...
M S Cavalcante
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
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
Wood durability in the light of recent trends and research on the durability of building materials and components
2000 - IRG/WP 00-20195
Building-related research of today demonstrates a clear shift in focus from the design and production phases to usage and to the entire life time. A consequence is that the performance criteria of materials, components and of the entire building must be regarded over the life time rather than at the time of production or delivery. As one example can be mentioned the Building Construction Directive...
K Ödeen
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