| Summary: | Mahogany is the most desirable type of wood as a raw material range of furniture products
and construction purposes. Interest in mahogany causes increased raw material inventory is
reduced felling mahogany cook. To meet these needs to felling mahogany young age that generally
have a large proportion of heartwood. Field experience indicates that many parts of the pig
attacked by mahogany dry wood termites because of the low natural durability. Thus need to be
preserved with a preservative that can prevent wood destroying insects. Boric acid and borax is
one of preservatives containing boron active ingredients are cheap, easy to obtain and use,
odorless, and does not change the color of the wood.
Materials used are part pig mahogany plank mahogany obtained from public forest logging
in district Kali Bawang, Kulon Progo. This study uses a completely randomized design with a
factorial arranged in two factor, the type of preservative boric acid and borax concentration of 5%
by using 2 methods : hot bath method and the cold bath method. Cold soaking time 12, 24, 36,
and 48 hours hot and soaking time 1, 2, and 3 hours. Termites are used for durability testing
sample in this study is the dry wood termites (Cryptotermes cynocephalus light). Parameters
observed in this study, namely absorption, retention, dry wood termite mortality, weight reduction,
and the degree of damage to the test sample.
The result showed the range of the average yield absorption parameter values on cold
immersion of 45.10 to 124.04 kg/m3 and heat marinade from 35.78 to 68.56 kg/m3, cold marinade
retention value of 4.25 to 12.99 kg/m3 and heat marinade from 3.09 to 9.53 kg/m3, cold immersion
termite mortality of 62 to 72.67 % and from 56 to 80.67% hot baths, cold baths sample weight
reduction of 0.85 to 1.09 gram and heat marinade from 0.85 to 1.37 gram, and the degree of
damage to get in on the class being at each immersion. Result of analysis of variance showed that
there was an interaction between these factors and the type of preservative dipping time
significantly affect mortality of termites with the heat bath method. As for the different immersion
time factor is very real to the absorption, retention.
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