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Title: Effects of loblolly pine extract, primary and quaternary alkyl ammonium chlorides combined with burgundy oil from eastern red cedar against subterranean termites and wood-decay fungi

Source: BioResources

Author(s)Eller, Fred J.; Mankowski, Mark , E. .; Kirker, Grant T.; Selling, Gordon W.

Publication Year: 2021  View PDF »

Category: Journal Articles

Abstract: Burgundy oil (BO) from Eastern red cedar provides resistance against termites and wood-decay fungi and is enhanced when combined with an amylose inclusion complex (AIC) containing hexadecylammonium chloride (HAC). Indirect evidence also indicated that a methanol Loblolly pine extract (LPE) was inhibitory against termites. This study compared the effects of HAC and didecyldimethylammonium chloride (DDAC) combined with LPE and BO on termites and wood-decay fungi. Southern pine was treated by vacuum/pressure impregnation and resistance evaluated after exposure to termites and decay fungi. The combination of BO and either HAC/AIC or DDAC/AIC reduced wood mass losses by termites, increased termite mortality, and inhibited all wood-decay fungi. The HAC/AIC and DDAC/AIC resulted in equivalent mass losses by termites and termite mortalities. The DDAC was slightly more inhibitory than the HAC against wood-decay fungi. Given the slight advantage of DDAC over HAC and because DDAC is currently used to preserve wood, DDAC might be preferred over HAC. The LPE had a very minor effect on mass loss by termites, termite mortality, and only a slight inhibitory effect on G. trabeum and T. versicolor, while R. placenta and I. lacteus were unaffected. Higher concentrations of DDAC and/or LPE might improve protection against termites and wood-decay fungi.

Keywords: Juniperus virginiana; wood extract; southern pine; reticulitermes flavipes; brown-rot fungi; white-rot fungi

Publication Review Process: Formally Refereed

File size: 2,048 kb(s)

Date posted: 03/12/2021

This publication is also viewable on Treesearch:  view
RITS Product ID: 10124
Current FPL Scientists associated with this product (listed alphabetically)
Kirker, Grant
Research Forest Products Technologist
Mankowski, Mark
Research Entomologist
 

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