Studies on the Natural Durability of Tropical Timbers to termite attack

1988 ◽  
Vol 24 (4-5) ◽  
pp. 337-341 ◽  
Author(s):  
Nana Supriana
Keyword(s):  
Natural Durability ◽  
Termite Attack

scholarly journals DURABILIDADE NATURAL DE DEZ MADEIRAS AMAZÔNICAS SOB CONDIÇÕES DE CAMPO

Nativa ◽  
2019 ◽  
Vol 7 (6) ◽  
pp. 758
Author(s):  
Janaína De Nadai Corassa ◽  
Catiane Michelli Alcantara Tiesen ◽  
Onice Teresinha Dall'Oglio ◽  
Rafael Rodolfo de Melo
Keyword(s):  
Open Field ◽  
Field Test ◽  
Natural Durability ◽  
Forest Species ◽  
Amazonian Forest ◽  
Hymenaea Courbaril ◽  
Loss Of Resistance ◽  
Termite Attack ◽  
Dipteryx Odorata

O objetivo desse trabalho foi avaliar a durabilidade natural de dez espécies florestais da Amazônia em dois ambientes de deterioração. As espécies estudadas foram a Trattinnickia burserifolia Burseraceae (amescla), Mezilaurus itauba (itaúba), Hymenaea courbaril (jatobá), Nectandra cissiflora (canela), Hymenolobium petraeum (angelim pedra), Erisma uncinatum (cedrinho), Bowdichia virgilioides (sucupira), Apuleia leiocarpa (garapeira), Dipteryx odorata (cumaru) e Qualea albiflora (cambará). Os ambientes avaliados foram campo aberto e mata. As amostras das madeiras foram confeccionadas com dimensões de 5 x 5 x 40 cm e submetidas em ensaio de deterioração durante 660 dias. Em campo foi realizado o teste de quebra e a coleta dos cupins presentes nas madeiras. Após 660 dias as amostras foram encaminhadas ao laboratório para avaliação do índice de sanidade. As madeiras de amescla, angelim pedra, cambara e cedro foram as mais deterioradas pelos cupins. Foram observados quatro gêneros de cupins nas madeiras avaliadas: Heterotermes sp., Coptotermes sp., Dolichorhinotermes sp. e Armitermes sp. A madeira itaúba apresentou maior durabilidade natural em todos os testes. O ambiente onde ocorreu a maior perda de resistência das espécies foi a mata.Palavras-chave: térmitas; ensaio de campo; resistência; teste de quebra. NATURAL DURABILITY OF TEN AMAZON WOODS UNDER FIELD CONDICTIONS ABSTRACT:The objective of this study was to evaluate the natural durability of ten Amazonian forest species in two environments of deterioration. The species studied were Trattinnickia burserifolia (amescla), Mezilaurus itauba (itaúba), Hymenaea courbaril (jatobá), Nectandra cissiflora (canela), Hymenolobium petreum (angelimpedra), Erisma uncinatum (cedrinho), Bowdichia virgilioides (sucupira), Apuleia leiocarpa (garapeira), Dipteryx odorata (cumaru) e Qualea albiflora (cambara). The environments were an open field and a forest. The wood samples were made with dimensions of 5 x 5 x 40 cm and submitted to a deterioration test for 660 days. In the field was realized breaking test and collection of the termites present in the woods. After 660 days the samples were sent to the laboratory to evaluate the sanity index. Amescla, angelim pedra, cambara and  cedro woods  showed more preference about termite attack. Four genres of termites were observed in the woods evaluated: Heterotermes sp., Coptotermes sp., Dolichorhinotermes sp.  and Armitermes sp. Itaúba wood presented greater natural durability in all tests. The environment of deterioration that most influenced the loss of resistance of the species was the forest.Keywords: termite; field test; resistance; break test.

scholarly journals Short Communication: The resistance of Styrax sumatrana wood of varying growth sites and stem axial positions to subterranean termite (Coptotermes curvignathus) attack

2021 ◽  
Vol 22 (6) ◽  
Author(s):  
Apri Heri Iswanto ◽  
Joel Tambunan ◽  
Arida Susilowati ◽  
Rudi Hartono ◽  
Atmawi Darwis
Keyword(s):  
Mass Loss ◽  
Short Communication ◽  
Chemical Properties ◽  
Soil Surface ◽  
Wood Properties ◽  
Test Sample ◽  
Test Method ◽  
Subterranean Termite ◽  
Natural Durability ◽  
Termite Attack

Abstract. Iswanto AH, Tambunan J, Susilowati A, Hartono R, Darwis A. 2021. Short Communication: The resistance of Styrax sumatrana wood of varying growth sites and stem axial positions to subterranean termite (Coptotermes curvignathus) attack. Biodiversitas 22: 3192-3198.  As mega-biodiversity country, Indonesia consists of a large number of flora and fauna, including wood-destroying organisms such as termites.  One of the native trees known as a resin producer is Tobanese incense (Styrax sumatrana). The existence of this species has been studied for several wood properties such as physical, mechanical, and chemical properties, while its natural durability against termite attack has not been studied. As a country known as a haven for termites, the study on incense wood durability is very important for further utilization.  The objective of this research was to analyze the natural durability of S. sumatrana wood from two growing locations and different stem positions using a graveyard test. The Graveyard test method was used to investigate the mass loss and percentage of damage of the sampled woods. The test sample used is 2x2x20 cm3 in size. The sample is buried as deep as 15 cm and leaving 5 cm of the part that is above the soil surface. The distance between the samples is 60 cm. The results obtained from this study indicated that the incense wood originating from Pakpak Bharat and North Tapanuli districts can be classified as durable class V (Vulnerable category) and severely damaged (E category) with the respective mass loss percentages ranging from 22.03-31.70% and 18.46-20.79% and damage percentages ranging from 86.55-96.27% and 78.02-86.32%. In conclusion, the positions of the stem and the sites where it grows caused a difference in the natural durability value of Styrax sumatrana wood. The incense wood originating from North Tapanuli District had slightly better durability against subterranean termite attacks than that from Pakpak Bharat District, although overall the samples from these two sites fell into the same durability class.

scholarly journals Natural durability of raru wood (Cotylelobium melanoxylon) against subterranean termite attack

2020 ◽  
Vol 1542 ◽  
pp. 012051
Author(s):  
A H Iswanto ◽  
A Susilowati ◽  
A R Putra ◽  
D Nopriandi ◽  
E Windra
Keyword(s):  
Subterranean Termite ◽  
Natural Durability ◽  
Termite Attack

IDENTIFIKASI JENIS JAMUR PATOGEN UNTUK PENGENDALIAN RAYAP TANAH Coptotermes sp.

PERENNIAL ◽  
2010 ◽  
Vol 6 (1) ◽  
pp. 33
Author(s):  
Astuti Arif ◽  
. Syahidah ◽  
Sitti Nuraeni
Keyword(s):  
Key Words ◽  
Pathogenic Fungi ◽  
Wide Distribution ◽  
Subterranean Termite ◽  
The World ◽  
Identification Of Fungi ◽  
Screening And Identification ◽  
Termite Attack ◽  
Penicillium Brevicompactum ◽  
Aspergillus Sp

Fungi have a great diversity and wide distribution at the world. It can be used as the alternative technology for controlling of subterranean termite attack, particularly genus Coptotermes knowned as the wooden destructive organism, by using entomophatogenic fungi. For the purpose of the study, several isolate sources were taken from some locations. The results show that eight numbers of pathogenic fungi was founded by screening and identification of fungi taken from 19 numbers of isolate sources. The pathogenic fungi were Beauveria sp., Penicillium brevicompactum, P. rubrum, Paecilomyces fulvus, Fusarium verticolloides, Pythium sp., and Aspergillus sp. Key words: Jamur entomopatogen, Coptotermes sp.

scholarly journals Color change and termite resistance of fast-growing tropical woods treated with kesambi (Schleichera oleosa) smoke

2020 ◽  
Vol 66 (1) ◽  
Author(s):  
Yusuf Sudo Hadi ◽  
Muh Yusram Massijaya ◽  
Dodi Nandika ◽  
Wa Ode Muliastuty Arsyad ◽  
Imam Busyra Abdillah ◽  
...  
Keyword(s):  
Color Change ◽  
Acacia Mangium ◽  
Chemical Compounds ◽  
Subterranean Termite ◽  
Subterranean Termites ◽  
Schleichera Oleosa ◽  
Termite Attack ◽  
Wood Resistance ◽  
Tropical Woods ◽  
Anthocephalus Cadamba

Abstract Smoke treatment can be used to enhance wood resistance to subterranean termite attack. In this study, kesambi (Schleichera oleosa) wood was pyrolyzed to produce charcoal. The smoke produced as a by-product of pyrolysis was used to treat sengon (Falcataria moluccana), jabon (Anthocephalus cadamba), mangium (Acacia mangium), and pine (Pinus merkusii) wood samples for 1, 2, or 3 weeks. Following the smoke treatment, the wood specimens were exposed to subterranean termites (Coptotermes curvignathus Holmgren) according to the Indonesian standard 7207-2014 in a laboratory. The color change caused by smoke treatment was observed, and chemical analysis of smoke was also done. The results showed that chemical compounds of kesambi smoke predominantly consisted of acetic acid, phenol, ketones, amines, and benzene. The color of smoked wood became darker, less yellow, and a little redder, while a longer smoking period produced a darker color which was more resistant to termite attack. Smoke treatment enhanced the resistance of wood to subterranean termite attack, and the resistance levels were not significantly different based on the duration of the smoke treatment.

Unraveling the natural durability of wood: revealing the impact of decay-influencing characteristics other than fungicidal components

Holzforschung ◽  
2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Liselotte De Ligne ◽  
Jan Van den Bulcke ◽  
Jan M. Baetens ◽  
Bernard De Baets ◽  
Gang Wang ◽  
...  
Keyword(s):  
Wood Species ◽  
Prunus Avium ◽  
Brown Rot ◽  
Natural Durability ◽  
Anatomical Features ◽  
Brown Rot Fungi ◽  
Material Characteristics ◽  
The One ◽  
Block Test ◽  
The Impact

AbstractThe effect of fungicidal components in wood has been known for ages, yet there is no method to assess the impact of such components on the durability of a wood species, as compared to other material characteristics that influence decay. In this paper, the importance of fungicidal effects on the natural durability of 10 wood species is assessed in relation to other decay-influencing factors with a new test, the so-called ‘paste test’. By comparing results from this test with the ‘mini-block test’, on both heartwood and leached sapwood, insight is gained into the significance of fungicidal components on the one hand and other material characteristics on the other hand. The durability of species such as Prunus avium was attributed mainly to fungicidal components. For species such as Pterocarpus soyauxii, durability seemed to be an effect of both fungicidal components and moisture-regulating components, while the latter seemed to be of main importance in regulating the decay of Aucoumea klaineana and Entandrophragma cylindricum. Wood-anatomical features, such as the parenchyma content (in case of brown rot fungi) and the vessel-fiber ratio, possibly affect degradation as well. This work shows that fungicidal components are not always of major importance for the durability of a wood species. The authors hereby emphasize the importance of moisture-regulating components and wood anatomy on the durability of wood.

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