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Borer fauna of Iran biodeterioration of wooden boats in Persian Gulf and Sea of Oman
1997 - IRG/WP 97-10230
In Persian Gulf and Sea of Oman (Indian Ocean) there are thousands of wooden boats from the time of Acheamenian and Sassand dynasti when India was a part of the Persian Empire. Now after 2500 years again, the Indian timbers specially Tectona Grandis and other Indian timbers and also tropical woods of Zanzibar (Tanzania) are brought to the Persian Gulf and Sea of Oman (Indian Ocean). Unfortunately the woods are not pressure impregnated but the boats are made from many kinds of woods (indigenous and exotic) and with bad oil impregnation (local impregnation). As a result the wooden boats are very badly attacked by different borers. None of the timber species currently in demand for boat building possesses any natural bioresistance, and will be completely destroyed within 6 to 12 months. The Iranian ministry of Jihad (reconstruction) should use pressure impregnation of wood with preservative chemicals, but the impregnation is inadequate. The need for long-term research in the field of marine biodeterioration for improving the efficiency of currently known control measures, with emphasis of application of non-polluting biological methods has been suggested in this paper.
P Niloufari


Assessment of untreated Papua New Guinea timbers against subterranean termites. Progress report 2
1993 - IRG/WP 93-10040
Eight species of Papua New Guinea wood including Kwila (Intsia palembanica), Taun (Pometia pinnata), Malas (Homalium foetidum), PNG Walnut (Dracontomelon dao), Calophyllum (Calophyllum sp.), Kamarere (Eucalyptus deglupta), PNG Beech (Nothofagus spp.) and White Cheesewood (Alstonia scholaris) were exposed groun contact for their natural durability against subterranean termites. Inspection after 42 months showed that Kwila was still sound while Taun, Malas and PNG Walnut had minor attacks after the last inspection. The termites found attacking the stakes were Coptotermes obiratus, Microcerotermes repugnans and Nasutitermes novarum hebridarum.
M Rokova, H C Konabe


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 was still sound while Taun, PNG Walnut, Malas and White Cheesewood had traces of termite attack on some stakes. All stakes of Calophyllum and PNG Beech were totally destroyed while three of Kamarere stakes were also destroyed. The termites found attacking the stakes were Nasutitermes graveolus, Coptotermes obiratus, Coptotermes acinaciformes and Microcerotermes repugnans.
M Rokova, H C Konabe