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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