Your search resulted in 65 documents. Displaying 25 entries per page.
Enzymatic study of Ceratocystis sp., blue-stain fungi on Pinus nigra
1999 - IRG/WP 99-10315
One of the main problems that the forest exploitation industry has with Pinus nigra wood is the blue-stain fungi, whose causing agent is unknown. Therefore, the objective of this work has been to study, through enzymatic tests of the isolated cultures, if these fungi infect Pinus nigra in any specific way. After the incubations, isolates of Ceratocystis were obtained. These were cultured in a sali...
M T De Troya, F Rubio, D Muñoz-Mingarro, F Llinares, C Rodríguez-Borrajo, M Yuste, M J Pozuelo, J I Fernández-Golfín
Evaluation of the permeability of fast grown wood species
1995 - IRG/WP 95-40042
The low natural durability of certain species of wood, implies the need for applying a protecting treatment to increase its life in service. Because of this, a knowledge of the permeability properties of the wood is desired. In this work, a simple and reliable method to evaluate the wood permeability is presented. For that, we have been used fast grown species, with low natural durability, Poplar ...
M T De Troya, A M Navarrete, E Sanchez, J E Garcia de los Rios, E L Rodríguez Trobajo
Studies on the fungicidal effectiveness of a petroleum derived product as a creosote alternative
1986 - IRG/WP 3384 E
This work, appears first because of the necessity to find out a profitable use for a residual product of the petrol pyrolisis, and second, because the lack of high natural durability wood used until now-a-days to build posts and sleepers in creosote lacking countries. Our main objective was pointed to the characterization of this new product and to find out the effectiveness against the wood-destr...
A M Navarrete, M T De Troya
Analysis of the degradation of carbohydrates by blue-stain fungi
1990 - IRG/WP 1457
The topic of the degradative ability of blue-stain fungi literature is not clear. Many authors support the idea that those fungi don't have enzymatic capability to decay the wall of the ligneous cells. However, others have found some decay activity. In this study, we have attempted to analyze which wall cells soluble carbohydrates are metabolized by some blue-stain fungi, found in Spain. ...
M T De Troya, A M Navarrete, E Relano
Influence of the nature of the substrate and the method of inoculation on the degradative activity of soft rot fungi
1998 - IRG/WP 98-20133
The European Standard (ENV-807) determines the threshold of effectiveness of wood preservatives against the action of soft rot Ascomycetes fungi. Its application in the treatment of wood used in the hazard class 4 does not always offer repeatable results, which could be expected in an experimental norm.
For this reason, in this paper, we have evaluated the diverse variables that might influence t...
M T De Troya, A M Navarrete, F Rubio, J Jiménez, D Muñoz-Mingarro, C Rodríguez-Borrajo, F Llinares, M Yuste
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
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
Study of natural durability of Spanish Eucalyptus globulus wood
2007 - IRG/WP 07-10617
In some countries such as Australia, the wood of Eucalyptus globulus is recommended, due to its high durability, in risk situations where attack by organisms is likely to occur. In Galicia this species has been used for many decades for timber structures, which are still used. However, European Standard EN-350-2 places Eucalyptus globulus in the worst category of natural durability, a situation th...
D Lorenzo, M T Troya, M J Prieto, C Baso, M Touza
Evaluation of the natural durability of reed (Phragmites australis) originating in the Fertö region (Hungary) against wood decay organisms as material for use in a sustainable motorway noise barrier
2009 - IRG/WP 09-10685
This work presents the research carried out to determine the natural durability of reed from the Fertö region of Hungary against wood decay organisms. The final objective of this study is to obtain sufficient relevant data in order that the reed may be used as a constituent element in a viable and sustainable motorway noise barrier, which has been developed within the European research project, k...
M T Troya, F Rubio, M J Prieto, D Lorenzo, J L Fernández-Cabo, R Schöftner
Study on the natural durability of Eucalyptus grandis wood from Argentina
2009 - IRG/WP 09-10689
In Argentina eucalypts are in second place of importance in planted area, after pines. Due to its high growth rates (from 35 to 55 m3/ha/yr), Eucalyptus grandis is the most important among the eucalypts planted in Argentina. Moreover, E. grandis is one of the species with the greatest potential in the country, because of its diversity of uses for high end and added value solid products. Due to the...
D Lorenzo, M T Troya, J C Piter, M Sánchez, C Baso
Study on the natural durability of Eucalyptus globulus wood from Spain
2009 - IRG/WP 09-10690
The wood of Eucalyptus globulus is recommended in some countries, such as Australia, due to its high durability, in risk situations where attack by organisms is likely to occur. In Galicia this species has been used for many decades for timber structures and other uses, which are still used. However, European Standard EN 350-2 places Eucalyptus globulus in the worst category of natural durability,...
D Lorenzo, M T Troya, M Touza, C Baso
Use of biological and low toxicity products against subterranean termites
2009 - IRG/WP 09-20410
The climatology of Mediterranean countries is favourable to the development of termites that cause important damage to wood structures in both furniture and buildings. Until a few years ago the treatment for this type of insect was based on the impregnation of the wood with chemical products. The use of these chemicals is now being restricted in Europe since the publication and harmonization of n...
M T Troya, M J Prieto, F Rubio
Wood protectors sensitivity of Fusarium circinatum, a quarantine organism in Europe
2011 - IRG/WP 11-10755
In the last decade, two new organisms with a high potential damage in Conifer forests have been detected in Europe. They are the nematode Bursaphelenchus xylophilus and the fungus Gibberella circinata (anamorf: Fusarium circinatum), and have driven the European Union to protect the stands from propagation and dispersion of these new pathogens.
The nematode was detected first in Setubal (Portugal)...
Y Serrano, S Cobacho, A Navas, M Conde, R Raposo, M T Troya
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
Wood decay enzymatic ability of Fusarium circinatum
2012 - IRG/WP 12-10777
There exists pathogens that attack standing trees of forests, and do not usually thrive once the tree is felled. However, occasionally they can be present in a latent state in the wood and can spread and affect new areas with economic, ecological and social consequences. Fusarium circinatum is a fungus that causes “pitch canker” in pine species, and is considered a quarantine organism within t...
M T Troya, F Llinares, Y Serrano, M Conde
Survival of Bursaphelenchus xylophilus exposed to permethrins
2012 - IRG/WP 12-30585
The pine wilt nematode Bursaphelenchus xylophilus (Steiner and Buhrer 1934) Nickle, 1970 is a quarantine organism with a high potential to damage Conifer forests in Europe. This has driven the European Union to protect forest stands from the propagation and dispersion of this pathogen.The nematode was first detected in Europe in Setubal (Portugal) in 1999 and eradication measures were taken. Howev...
S C Arcos, M T Troya, L Robertson, F Llinares, M Conde, A Navas
Survival of Bursaphelenchus xylophilus exposed to different active ingredients of wood protectors
2013 - IRG/WP 13-10802
The pine wilt nematode (PWN) Bursaphelenchus xylophilus (Steiner and Buhrer 1934) Nickle, 1970 is a quarantine organism with a high potential to damage Conifer forests in Europe. This has driven the European Union to protect forest stands from the propagation and dispersion of this pathogen.The nematode was first detected in Europe in Setubal (Portugal) in 1999 and eradication measures were taken....
S C Arcos, M T Troya, L Robertson, F Llinares, M Conde, A Navas
Product efficacy against Fusarium circinatum, a quarantine organism in Europe
2013 - IRG/WP 13-10807
Fusarium circinatum Nirenberg et O'Donnell (telemorph: Gibberella circinata Nirenberg et O'Donnell) is a quarantine organism in Europe producing the disease known as pitch canker of pines. For a decade, the European Union has taken steps to locate and eradicate the pathogen with the aim of eliminating the risk of spread. So far, research has focused on forest stands, however, the movemen...
M T Troya, R Raposo, F Llinares, M Conde
Efficacy of commercial wood preservatives against Bursaphelenchus xylophilus, a quarantine organism in Europe
2014 - IRG/WP 14-30638
Bursaphelenchus xylophilus (Steiner and Buhrer 1934) Nickle, 1970, pine wilt nematode (PWN), is a quarantine organism with a high potential to damage Conifer forests in Europe. This has driven the European Union to protect forest stands from the propagation and dispersion of this pathogen. Since the nematode was detected in Europe, eradication measures were taken. However, these measures were unsu...
C S Arcos, A Navas, L Robertson, M T Troya, M Conde, F Llinares
Study of the effectiveness of wood products for permanent protection against Fusarium circinatum
2014 - IRG/WP 14-30655
In Europe there exist a number of quarantine organisms that affect conifer forests, including Fusarium circinatum Nirenberg et O'Donnell (telemorph: Gibberella circinata Nirenberg et O'Donnell), a quarantine organism in Europe producing the disease known as pitch canker of pines. For a decade, the European Union has taken steps to locate and eradicate the pathogen with the aim of elimina...
M T Troya, M Conde, R Raposo, F Llinares, M Elvira-Recuenco
Influence of the moon phase on durability against wood decay fungi of Larix kaempferi and Pseudotsuga menziesii wood species
2015 - IRG/WP 15-10836
The analysis of the natural durability of wood is essential when establishing the level of protection required, depending on the designated end use of timber. On the other hand, there is a popular belief based on the influence of the moon phase in felling timber, recommending the waning moon as the optimum for felling trees. In fact, some companies now offer among their products, sawn timber felle...
M T Troya, M Conde, M J Barriola, F Llinares, V Dorronsoro
Wood protectors to control Bursaphelenchus xylophilus
2015 - IRG/WP 15-30661
Bursaphelenchus xylophilus, the pine wilt nematode (PWN), is a quarantine organism with a high potential to damage Conifer forests in Europe. The European Union is concerned in the protection of forest stands from the propagation and dispersion of this pathogen. In this line, the current control measures have been unsuccessful in preventing the dispersion of this organism, as it continues to be de...
M T Troya, C S Arcos, A Navas, L Robertson, M Conde, F Llinares
Outcomes deal to impregnability of Eucalyptus globolus L. wood after microwave treatment
2015 - IRG/WP 15-40712
Microwave treatment of wood has been used with several aims in many studies as drying, enhancement of pulp properties, angle fibre detecting, density evaluation, etc., and also to improve permeability of wood. Eucalyptus globulus Labill. is a refractory species which is spreading its use as solid wood for construction in Spain. Studies of different ways to improve their impregnability (uptake and ...
A Vega, E Hermoso, M T Troya
Durability to decay organisms of Pinus nigra subsp. laricio var. corsicana. Influence of the moon phase
2016 - IRG/WP 16-10869
Actually the use of wood has an added value since it is a renewable, biodegradable and recyclable material. For this reason, the evaluation of it natural durability is essential when establishing the level of protection required, being depending on the designated end use of timber. On the other hand, there is a popular belief based on the influence of the moon phase in felling timber, recommending...
M T Troya, M Conde, M J Barriola, F Llinares, V Dorronsoro
Decay of wood in outdoor above ground applications: Preview of results on the effect of climate and species in Spain
2017 - IRG/WP 17-20600
Within the framework of the Project BIA-42434R titled ‘Evaluation of the functional performance of wood in outdoor above ground applications’, seven trials containing seven pieces of sawn wood measuring 750x100x20mm3, belonging to seven different wood species (Scots pine, Radiata pine, Laricio pine, sweet chestnut, eucalyptus, Thermo-treated radiata pine and Spruce), were exposed to unprotecte...
J I Fernández-Golfin Seco, M Conde García, M R Diez Barra, M Conde García, L Acuña Rello, E Torres Álvarez, E Perea Alonso, M T Troya