Your search resulted in 448 documents. Displaying 25 entries per page.
Suitability of different termite species for laboratory testing
1982 - IRG/WP 1159
Different termite species were tested in the laboratory to evaluate the effectiveness of insecticides and wood preservatives in wood against termite attack. Determined were the optimum group size and composition, the matrix (vermiculite) volume and its moisture content. Choice feeding tests with fully impregnated wood blocks which are carried out according to a modified EN 117 procedure for Reticu...
U Kny, H Kühne
Preliminary indications of the natural durability of Spruce bark board
1999 - IRG/WP 99-10312
A board material made from pressed bark, with no added adhesive, has been developed by Forintek's composites group and tested for durability by Forintek's treated-wood group and the University of Hawaii. This material was also manufactured with veneers in a one-step process. Since one role of bark on the tree is protection against pests and diseases, barkboard was expected to hav...
P I Morris, J K Grace, G E Troughton
The UK termite eradication programme: Justification and implementation
2000 - IRG/WP 00-10373
In May 1998, an established infestation of subterranean termites (Reticulitermes lucifugus subsp. grassei) was found in a semi-rural, coastal setting in Saunton, North Devon. Surveys and monitoring revealed a discrete, highly localised infestation extending over some 2400 square metres. There is some evidence that the termites were imported accidentally possibly more than 30 years previously. With...
R H J Verkerk, A F Bravery
Assessment of untreated Papua New Guinean timbers against subterranean termites. Progress Report 1
1990 - IRG/WP 1436
Eight major commercial timber species (Intsia palembanica, Pometia pinnata, Homalium foetidum, Dracontomelon dao, Calophyllum spp., Eucalyptus deglupta, Nothofagus spp., and Alstonia scholaris) were exposed in ground contact against termites. Five replicates of heartwood stakes of 25x25x250 mm³ of each species were randomly embedded in the soil. Results after 24 months exposure showed that Kwila ...
M Rokova, H C Konabe
Laboratory tests on the residual effects of pyrethroids against termites thirteen years after application
1994 - IRG/WP 94-30056
This paper is in continuation to a series of articles published on the work being developed in Brazil regarding the feasibility of using photostabl synthetic pyrethroids against termites. Tests were carried out to compare the efficacy of five synthetic pyrethroids with the traditional organo-chlorinated pesticide, chlordane. Wooden blocks were impregnated with alcohol-based solutions of the above-...
A M F Oliveira
Susceptibility of heartwood of three Pinus species to attack by the subterranean termite Coptotermes acinaciformis (Froggatt)
1994 - IRG/WP 94-20026
Heartwood of plantation-grown Pinus elliottii (slash pine), Pinus caribaea (Caribbean pine) and Pinus radiata (radiata pine) was obtained from a range of locations throughout Australia and New Zealand for use in a field bioassey with subterranean termites. Timber stock was analysed for a number of stilbene and flavonoid heartwood extractive components which could contribute to variation in suscept...
M J Kennedy, L L Dixon, B C Peters
PXTS; A Metal Free Oligomer Wood Preserving System - A Summary of Data To Date
2004 - IRG/WP 04-30350
The world is continually looking for new wood preservative technology, especially to address environmental concerns. Recent changes in the USA have limited the use of arsenical containing formulations to industrial use through a negotiated voluntary cancellation of most residential label uses. PXTS (Polymeric Alkylphenol Polysulfide) offers a brand new technology that is an all organic system, lik...
M H Freeman, D D Nicholas, D Renz, R Buff
Implications for comparability of laboratory experiments revealed in studies on the effects of population density on the vigour in groups of Coptotermes lacteus (Froggatt) and Nasutitermes exitiosus(Hill) (Isoptera: Rhinotermitidae, Termitidae)
1983 - IRG/WP 1197
(Summary of paper 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 emerged. At low population densities (< 0,01 g/mL) performance of termites improved with an increase in group size; at higher population densities it tended to decline. The impact of altering group size and container volume on termite vigour was most pronounced at low densities; at higher population densities, performance tended to be more stable but declined markedly when termites became overcrowded. In most jar-type experiments on termites, especially those conducted in Europe and the U.S.A., small groups of termites are housed in disproportionately large jars, resulting in very low, sub-optimal population densities. Suggestions are made for improvements in experimental design that would lead to an enhancement of the comparability of results from different laboratories.
M Lenz, R A Barrett, E R Williams
Biological control in termite management – the potential of nematodes and fungal pathogens
2004 - IRG/WP 04-10521
A brief overview on the options for biological control of termites is presented. Many organisms have been identified as being able to kill termites, however, we do not know their real impact on field populations of termites. Most research has focused on some entomopathogenic nematodes and the fungi Beauveria bassiana and Metarhizium anisopliae. To date, only a limited number of field studies have ...
M Lenz
Estimating the size of subterranean termite colonies by a release-recapture technique
1980 - IRG/WP 1112
The technique is described and the results of an exploratory field trial are presented. The colony size estimate from weekly termite collections varied considerably, but nevertheless permitted assigning termites at three locations to three categories of greatly different colony size. The sizes of the three estimates were much greater than anticipated and included a multimillion termite complex of ...
G R Esenther
Detection of termite attack in wood using acoustic emission
1989 - IRG/WP 2331
Acoustic emission (AE) is the elastic wave produced by the strain energy released in the process of fracture of a material and propagates through it. The object of this report is to detect AEs produced by the termite activities and to evaluate the possibility of using an AE monitoring test to nondestructively detect the termite attack in wood. It was revealed that AEs were detected from the specim...
Y Fujii, M Noguchi, Y Imamura, M Tokoro
Borate Protection and Termites: Variation in Protection Thresholds Explained
2006 - IRG/WP 06-20324
Laboratory and field data reported in the literature are confusing with regard to ‘adequate’ protection thresholds for borate timber preservatives against subterranean termites. The confusion is compounded by differences in termite species, timber species and test methodology. Laboratory data indicate a borate retention of 0.5% mass/mass (m/m) boric acid equivalent (BAE) would cause > 90% t...
B C Peters, C J Fitzgerald
The effect of high and low boron soils on foraging termite behaviour and their metabolic systems
2007 - IRG/WP 07-10602
The highest concentrations of boron are found in ground water and soils of some of the driest climate areas (arid and semi arid regions) in the world. This present study examined the various concentrations of boron levels on filter papers against the subterranean termite species Coptotermes from different provenances and different boron soil levels. The termites were presented with no-choice bioas...
B M Ahmed, J R J French, P Vinden
The “wire-loop slicing technique” for the rapid field collection of large numbers of Coptotermes acinaciformis termites from above-ground mound colonies
2006 - IRG/WP 06-10583
This technique of rapidly slicing through an above-ground C. acinaciformis mound colony with a steel wire-loop attached to a vehicle allows the collection of large numbers of termites. The sliced mound topples onto a tarpaulin arranged on the ground, the outer wall layers break away in large segments, and the carton materials incorporating the termites are readily collected and transferred to larg...
B M Ahmed, J R J French
Future termite control requires partnership between industry, government and people
2006 - IRG/WP 06-10586
Given the behaviour of the pest control industry, together with the housing and timber industries, and performance of the State regulatory agencies, it is not surprising that all of these groups were philosophically ill-prepared to consider alternative measures in June 1995. However, conditions have altered and there is an awareness of such alternatives. In future, termiticides will have propertie...
J R J French, B M Ahmed
Study of new wood preservatives from biological origin and low toxicity against wood decay organisms (fungi and termites)
2006 - IRG/WP 06-10600
Wood as an organic material is likely to be attacked by living organisms if no protecting treatment is applied to improve its durability. The biological agents, which in Spain, due to its specific climatologic, cause major damage to wood, are the stain fungi, the rot fungi and the subterranean termites.
The commercialisation of the products actually used to treat wood against fungi and to treat t...
M T Troya, M J Prieto, F Rubio, D Lorenzo, J J Teixidó
Effects of two insect growth regulators (IRGs) on Microcerotermes diversus (Silvestri) (Isoptera: Termitidae) in Southwest Iran
2006 - IRGWP 06-10601
Microcerotermes diversus (Silvestri) is the most economically damaging termite species in structures in southwest, Iran. One safe control strategy that may reduce the subterranean termite damage in buildings is the use of IGRs in a suitable bait matrix. The effects of two juvenile hormone analogues, Admiral (Pyriproxyfen ) and Farox on M. diversus were evaluated over a range of concentrations ( 10...
B Habibpour, M S Mossadegh, G Henderson, S Moharramipour
Performance of borate-treated lumber in a protected, above-ground field test in Japan
2006 - IRG/WP 06-30395
This document is supplemental to the previous IRG document (Tsunoda et al. 2004).
An experiment to simulate the sill plate (dodai) of the Japanese houses was conducted at the termite field test site of the Research Institute for Sustainable Humanosphere of Kyoto University in Kagoshima Pref., Japan where two economically important subterranean termite species [Coptotermes formosanus Shiraki and R...
K Tsunoda, A Byrne, P I Morris, J K Grace
Laboratory bioassay and field trial on imidacloprid and cypermethrin as glueline treatments for softwood plywood
2006 - IRG/WP 06-30405
The effectiveness of imidacloprid and cypermethrin as glueline treatments for protecting phenol formaldehyde (PF)-bonded Pinus radiata (radiata pine) plywood from attack by subterranean termites was evaluated both in the laboratory and field. Imidacloprid was evaluated in two plywood constructions (19 ply x 1.6 mm-thick veneers and 5 ply x 3.2 mm-thick veneers) whereas cypermethrin was evaluated i...
J W Creffield, D K Scown
The response of the Formosan subterranean termite (Coptotermes formosanus Shiraki) to different boron compounds
2007 - IRG/WP 07-10609
Although boric acid and other boron compounds have been used since the 1800s as insecticides, their mode of action is not well understood. Borate salts, in particular sodium and zinc formulations, are effective wood preservatives and are used extensively in Hawai’i to protect building materials from both drywood (Kalotermitidae) and subterranean (Rhinotermitidae) termites. The Formosan subterra...
M C Gentz, J K Grace
On the reasons of Prunus africana natural durability
2007 - IRG/WP 07-10611
Analysis of Prunus africana heartwood extractives was studied with the aim of understanding the reasons for its high natural durability. Soxhlet extractions of wood powder using different solvents were carried out. Effect of each extracts at different concentrations was evaluated on the growth of several fungi among which Coriolus versicolor, Poria placenta, and Aureobasidium pullulans. Results sh...
F Mburu, S Dumarçay, M F Thévenon, P Gérardin
Accelerated assessment tests of new termiticides
2007 - IRG/WP 07-20353
One of the biological agents, which cause major damage to wood in Spain, is the subterranean termites.
The systems used for controlling termites don’t eradicate them, and the products presently used to treat wood against them, due to their toxicity and their persistence in the environment, could be prohibited in the near future in Europe as consequence of the 98/8/EC Directive (usually called t...
M T Troya, M J Prieto, D Lorenzo, F Rubio
Insectos xilofagos que dañan la madera de edificios historicos de Morelia, Michoacán, México
2008 - IRG/WP 08-10673
Pine lumber in buildings in the historic center of Morelia that exhibited signs of attack were collected between 1999 until 2007. Four species were identified from this material. Two species were in the order Isoptera: Incisitermes marginipennis Latreille (Kalotermitiidae), Reticulitermes serratus Mendez (Rhinotermitidae), while the others were from the order Coleoptera: Calymmaderus oblongus (Go...
C M A Jurado Vargas, J Cruz de Leon
Laboratory evaluation comparing three commercial termite baits based on chitin synthesis inhibitor (CSIs) against the subterranean termites Coptotermes acinaciformis (Froggatt) and Mastotermes darwiniensis Froggatt
2007 - IRG/WP 07-10625
This laboratory bioassay report describes laboratory evaluation undertaken to compare the efficacy, and palatability of Requiem®, Nemesis® and Sentricon® AG as candidate bait toxicants against the subterranean termites Coptotermes acinaciformis (Froggatt) and Mastotermes darwiniensis Froggatt. The laboratory bioassay results confirmed palatability and efficacy differences between the three comm...
B Ahmed
Foraging Behavior of the Formosan Subterranean Termite (Isoptera: Rhinotermitidae) in Response
2007 - IRG/WP 07-10605
Foragers of the Formosan subterranean termite, Coptotermes formosanus Shiraki, were allowed to tunnel in two dimensional, sand filled arenas containing Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) wafers pressure treated with disodium octaborate tetrahydrate (DOT) to an average retention of 1.77 % BAE on one side of each arena, and untreated wafers of Douglas-fir on the other side. Arenas w...
C E Campora, J K Grace