Natural durability of commercially important bamboo species in the Philippines against powderpost beetle (Dinoderus minutus Fabricius)

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Research Paper 01/12/2021
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Natural durability of commercially important bamboo species in the Philippines against powderpost beetle (Dinoderus minutus Fabricius)

Devina Rizza S. Caparida, Mark Jun A. Rojo, Jason A. Parlucha, Joseph C. Paquit
Int. J. Biosci.19( 6), 103-109, December 2021.
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Natural durability tests of freshly cut bamboo species commonly available in Bukidnon, Philippines were carried out to determine which species is most susceptible against Powderpost beetles (PPB) (Dinoderus minutus Fabricius) or “bokbok” as it is known locally. The Bamboo species used were Kawayan dilaw (Bambusa vulgaris Schrad ex Wendl var striata (Lodd. ex Lindl.) Gamble), Bolo (Gigantochloa levis (Blanco) Merrill), and Kawayan tinik (Bambusa blumeana J.A. & J.H. Schultes). Aside from species, the influence of bamboo section (basal, middle, top) and exposure (indoor and outdoor) were also among the factors considered. The three classifications of durability, namely, durable, moderately durable, and slightly durable, were based on the number of beetle holes in the samples.  The experiment was laid out in a factorial experiment in a Completely Randomized Design. For the analysis, Two-way ANOVA was carried out to determine whether the factors influence the variation in beetle holes. Results have revealed a significant interaction between species and section. Exposure did not show a significant result. Both G. levis and B. vulgaris are moderately durable against PPB, while B. blumeana was not durable (highly susceptible) against PPB.  Most abundant beetle holes were observed in the top section. The variation in the environment setting i.e. indoor or outdoor did not significantly affect the feeding preference and feeding behavior of PPB.  The G. levis was found as the most durable species in outdoor and indoor settings among the bamboo species compared in this study.


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