Your search resulted in 62 documents. Displaying 25 entries per page.
Anti-feedant activity of stilbenic components from bark of Picea glehnii against a subterranean termite, Reticulitermes speratus
2002 - IRG/WP 02-10447
Stilbenic components, one of polyphenolic groups, widely distributed in plant bodies have been known as anti-microbial agents, but not known whether to have anti-termite activities. A stilbene glucoside, isorhapontin, from the bark of Picea glehnii was examined on the anti-feedant activity against a subterranean Reticulitermes speratus. Isorhapontigenin, the aglycone of isorhapontin, induced from ...
S Shibutani, M Samejima, S Doi
Über Hausbock Hylotrupes bajulus (L.), (Col., Cerambycidae), in Laubholz: Versuche mit Laubholzarten, Prüfung der Wirkung von Ligninstoffen und von Ginkgo biloba, Beobachtungen an Hesperophanes. [On House-longhorn Beetle Hylotrupes bajulus (L.), (Col., Cerambycidae) in hardwood: Investigations with several hardwood-species, tests on activity of lignin components and Ginkgo biloba, observations on Hesperophanes]
1982 - IRG/WP 1144
Hylotrupes bajulus-larvae feed and develop in softwoods, hardwood acts as a feeding poison. The reason for this is still little known. According to literature some observations contradict this established opinion and the question was raised, whether the colour-strain scutifer (= lividus) is able to live in hardwood. Testing ten European and tropical hardwood-species (following the DIN-EN test proc...
S Cymorek
A suggested method to ascertain the toxicity of wood preservatives against the house longhorn beetle
1976 - IRG/WP 271
This abstract is given to let IRG members know about a method sometimes used in the Institute for Wood Technology in Sarajevo for obtaining rapid information on the toxicity of insecticides and ready made wood preservatives against the house longhorn beetle, which is the most common insect found attacking timber roof constructions in houses in Yugoslavia. In this method, 8-10 months' old ...
N Vidovic
Sapstain development on Jack pine logs in Eastern Canada
2000 - IRG/WP 00-10358
During 1998-99, a study was initiated to investigate the influence of seasons, log types and storage time on the sapstain development on jack pine logs at two sites in Eastern Canada. Jack pine trees (Pinus banksiana) were harvested into whole-tree and cut-to-length logs in spring and in autumn. Sapstain development was examined in these logs at 2 to 4 week intervals after felling. The mean stain ...
Dian-Qing Yang, R Beauregard
A rearing procedure for the house longhorn beetle Hylotrupes bajulus L
1973 - IRG/WP 228
The technique practised at the Princes Risborough Laboratory for culturing Hylotrupes bajulus is described. It is modified from methods previously suggested by German workers. A protein and vitamin enriched wood diet to accelerate larval growth is employed and larvae are subsequently given a period of cool storage to induce pupation. Adults are confined in groups with prepared surfaces for egg lay...
R W Berry
The relationship between blue-stain and bark beetles
1971 - IRG/WP 19
The attack of bark beetles on standing or in newly-felled stems provides special growth conditions to wood-inhabiting fungi. In the wood attacked by bark beetles, a specific and rich fungus flora is found, and from these fungi the economically important group of blueing fungi has been more thoroughly investigated. These fungi live on nutritive substances present in the cells, especially in the med...
A Käärik
Anobium punctatum De Geer (Coleoptera Anobiidae)
1980 - IRG/WP 1103
Anobium punctatum de Geer (1) est un Coléoptère qui appartient au sous-ordre des Teredilia et à la famille des Anobiidae. Cet insecte a été décrit pour la première fois par Charles de Geer, entomologiste Suédois dans ses "Mémoires pour servir à l'histoire des insectes" parues en 1774, sous le nom vulgaire de Vrillette pointillée et en latin " Ptinus (punctatus) griseo fuscus". ...
M-M Serment
Oviposition orientation of the longicorn beetle Hylotrupes bajulus
1994 - IRG/WP 94-10076
The oviposition behavior of Hylotrupes bajulus with regard to the selection of an oviposition site was studied. The orientation of fertilized females towards a pine block and in choice tests (between pine wood and other materials) was observed. In the latter tests certain sensory organs of the beetles were inactivated. Scanning electron photographs were taken of the ovipositor. They show different...
B Hinze, H Hertel
Anti-fungal properties of pyrolytic oils derived from softwood bark
2000 - IRG/WP 00-30218
Thermal decomposition of balsam fir and white spruce mixed bark residues at 450°C and under vacuum (< 20 kPa abs.) results in high yields of pyroligneous liquors rich in phenolic content. This vacuum pyrolysis process has been scaled-up to a pyrolysis plant with a feed capacity of 3.5 t/h of softwood bark, which is the largest plant of this type in the world. The pyrolytic aqueous condensates ...
D Mourant, Dian-Qing Yang, Xiao Lu, C Roy
Protection of freshly felled timber against attack by bark boring insects
1981 - IRG/WP 1143
This report describes two experiments with the insecticide formulation Perigen, which contains the synthetic pyrethroid permethrin. At 0.2% w/v active ingredient individual logs were protected against bark boring beetles for 18 weeks. At 0.3% w/v active ingredients Perigen gave similar protection against insect attack to stacks of recently felled unbarked pine logs. This protection was at least eq...
J Dominik, P R Skidmore
Development of bluestain in commercially harvested logs in Britain
1996 - IRG/WP 96-10150
In Britain, mechanised harvesting of conifer forestry crops is now the preferred method of felling where terrain and access allows. However, use of mechanised harvesters can lead to excessive debarking, loosening of the bark and wood splintering with, on average, about a third of the bark removed from the more severely damaged logs. More bark has also been observed to be lost from logs harvested e...
A Uzunovic, J F Webber, D J Dickinson
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
Evaluation of fungi isolated from the galleries of the striped ambrosia beetle Xyloterus lineatus (Ol.) (Col., Scolytidae)
1995 - IRG/WP 95-10092
Fungi from the galleries of the striped ambrosia beetle Xyloterus lineatus (Trypodendron lineatum) (Ol.) found in spruce logs were studied. The following fungi were isolated and identified: Trichoderma harzianum Rifai, the yeast Pichia anomale Hansen (Kurzman), the blue-stain fungus Ceratocystis piceae (graphium) (Münch) Bakshi and a fungus closely similar to Ceratocystis araucariae (anamorph). T...
G Babuder,F Pohleven
Beetle-Fungus Associations in Woody Substrates in the Context of International Trade
2007 - IRG/WP 07-10610
Interest in the role of insects in transmitting various fungi and in the potential for outbreaks of insects vectoring plant disease organisms has resulted in a large volume of literature on insect-fungi relationships. Mites are mentioned as an important third partner in these associations. This paper summarizes information and provides an update on major aspects of these intricate associations in ...
A Uzunovic
Do insects infest wood packing material with bark following heat-treatment?
2007 - IRG/WP 07-10633
As a result of international trade, many bark- and wood-infesting insects are inadvertently transported in wood packing materials (WPM) such as crating, dunnage, and pallets. WPM is suspected as the likely pathway for most of these borers, although the exact mode of entry into the USA is unknown for all 25 borers. The top 10 countries of origin were, in decreasing order, Italy, Germany, China, Spa...
R A Haack, T R Petrice, P Nzokou, D P Kamdem
Run-off quality from sprinkled debarked logs and logs with bark from Picea abies and Pinus contorta
2007 - IRG/WP 07-50248
Storage of roundwood is necessary for efficient industrial production at sawmills and pulpmills. The need for wood storage becomes even more critical when large storm fellings create huge volumes of wood that is at risk for deterioration. In Scandinavia, the technique of sprinkling of water on roundwood is used to protect stored wood from fungal and insect infestation and drying during the summer....
M Jonsson
Preventing Xylosandrus crassiusculus Beetle Attack in Large Green Timbers Using Pyrethroid Dip Treatments
2008 - IRG/WP 08-10642
Although awareness about the risk of invasive species has increased over the past decade, a large number of highly destructive exotic pests are still being introduced around the world. One of the more important pest introductions in the Southeastern United States has been the Asian ambrosia beetle, Xylosandrus crassiusculus. This species is particularly important
because of its ability to kill...
C Schauwecker, A F Preston, J J Morrell
An Important Wood Destroying Beetle: Anobium punctatum (De Geer) (Coleoptera: Anobiidae) and Distribution of Western Black Sea region
2008 - IRG/WP 08-10666
Anobium punctatum (De Geer) is an economically important insect species regarding damage to wooden structures. The damage mostly occurs in historic wooden buildings, wooden chairs, tables and seats. It has been determined in the Istanbul, Ankara, Ayancik, Bartin, Rize, Trabzon,
Gumushane and Gole regions of Turkey. There is no detailed study in terms of the distribution of this insect and the d...
A Toper Kaygin, Y Yildiz, Ü C Yildiz, S Yildiz, S M Onat, N K Özkazanç, B Kaygin, S Çelíkyay
The Comparison of Fixation and Leachability of Bark, Fruit and Leaf Tannin Extracts with Boron Minerals
2008 - IRG/WP 08-30473
Tannins extracted from several plants have natural durability properties. Due to these properties, some of the researchers have studied them for protecting wood. In this study, Scots pine (Pinus sylvestris) and beech (Fagus orientalis) wood samples were treated with bark, fruit, and leaf extracts as well as water-based wood preservative salts at various concentrations to increase fixation. The pen...
S Sen, C Tascioglu, K Tirak
Effect of juglone from Juglans mandshurica bark activity of wood decay fungi
2009 - IRG/WP 09-30502
Juglone was extracted from Juglans mandshurica bark via vacuum-assisted steam stripping. The extract was characterized by Fourier Transform Infrared Spectroscopy (FTIR), 1H Nuclear Magnetic Resonance (NMR) and Gas chromatography/mass spectrometry (GC-MS). The extraction process was easy to perform and produced excellent yields (0.22 g juglone/100 g of bark) of a high purity extract (96.42% juglone...
Dongmei Yang, Shuangyue Li, Shujun Li, Wenqiang Su, Yan Jin, Molong Sun
Antifungal Effect of Bark and Wood Extracts of Condalia hookerii (Rhamnaceae), Ebenopsis ebano (Fabaceae) and Helietta parvifolia (Rutaceae) on Trametes versicolor
2010 - IRG/WP 10-30532
This research detail the growing inhibition effect on Coniophora puteana and Trametes versicolor fungi caused by hot water sawdust and bark extracts of three semi-arid land species Condalia hookerii, Ebenopsis ebano and Helietta parvifolia diluted in malt extract agar medium at 2000 ppm and 10000 ppm. After 12-14 days incubation the inhibition growing effect was measured based on the difference be...
A Carrillo, J G Marmolejo, F Garza, V Bustamante, M Garza
Study of the durability of the Maderon® against wood decay fungi and insects
2011 - IRG/WP 11-40548
Many industries produce residues that are not easily degradable. One of these is nut husks which, due to their high level of resistance to biological and environmental degradation, have become an ecological problem. Maderón® is a material invented and patented in Spain employed as an ecological substitute and a modern alternative to certain uses of wood. At present, Maderón® is commercialized ...
M T Troya, F Llinares, P Jiménez, J I Fernández-Golfín, M Conde, R Díaz
Observation of Boring Process of Larvae of the Bamboo Powder-post Beetle (Dinoderus minutus)
2014 - IRG/WP 14-10821
The bamboo powder-post beetle Dinoderus minutus is a major pest of felled bamboo in Japan. X-ray computer tomography (CT) was applied to non-destructively trace the movement of the larvae of this beetle inside the infested bamboo samples. The bamboo samples were prepared from pieces of the Japanese timber bamboo Phyllostachys bambusoides culms that were enclosed with adult D. minutus beetles for a...
H Watanabe, Y Yanase, Y Fujii
Anti-Fungal Activity on Some Wood extracts as a Wood Protectant
2016 - IRG/WP 16-30684
In this study, six different wood barks were used, where obtained bark extracts were blended with potato-agar in order to investigate their antifungal properties. To determine the inhibition effectiveness of extractives, two different fungi; Coniophera puteana and Trametes versicolor were selected. Fungal activity was carefully observed for the duration of seven days. Following biological testing,...
Ö Özgenç, S Durmaz
Improvement of wood properties by impregnation with liquefied spruce bark based resins
2016 - IRG/WP 16-40761
In this paper, biobased phenolic thermosetting resins are designed to be used as wood stabilization treatment. The originality of the study stands in substituting part of phenol by spruce (picea abies) bark: this is achieved by a liquefaction process in phenol in the presence of sulfuric acid as catalyst. Next, thermosetting resins are synthetized from liquefied bark by condensation on formaldehy...
X Duret, E Fredon, E Masson, P Gérardin