Banner for LabNotes
From Lab Notes
Contact Information
Forest Products Laboratory
One Gifford Pinchot Drive
Madison, WI 53726-2398
Phone: (608) 231-9200
Fax: (608) 231-9592
Email

 

You are here: FPL Home  / Information Products & Services  / Publications

Requested Product

Title: Effects of Teak, Tectona grandis Linn, heartwood extractives against Heterotermes indicola (Isoptera: Rhinotermitidae)

Source: Proceedings, IRG annual meeting. The International Research Group on Wood Protection. 1-16.

Author(s)Hassan, Babar ; Ahmed, Sohail ; Mankowski, Mark , E. .; Kirker, Grant ; Ibach, Rebecca ; Misbah ul Haq, Muhammad

Publication Year: 2018  View PDF »

Category: Conference Proceedings

Abstract: Heartwood extractives from Tectona grandis were investigated for antitermitic activities against Heterotermes indicola in laboratory experiments. Extractives were removed from wood shavings by soxhlet extraction using an ethanol: toluene (2:1) solvent system. Termite feeding and mortality followed a concentration dependent response. The highest termite mortality occurred at an extractive concentration of 10 mg/ml. The calculated LC50 based on the concentration dependant response was 3.2 mg/ml. Extractives showed high repellency and antifeedant activity against H. indicola. Tests in which extractives were used to vacuum-pressure treat southern pine and cottonwood, showed that T. grandis extractives imparted resistance to these non-durable species. At the highest concentration of extractives tested, complete mortality was observed after termites were exposed to extractive-treated southern pine and cottonwood. Compared to solvent controls, minimum weight losses of 3.6 and 3.5% were observed for extractive-treated southern pine and cottonwood, respectively, at the 10mg/ml concentration after 28 days of exposure. Termites exposed to a subset of extractive treated then leached southern pine and cottonwood showed high mortality. These results suggest that T. grandis extractives have antitermitic properties and may be potentially useful in the development of environmentally friendly wood preservative.

Keywords: Tectona grandis; preservative; lower termite; extractive transfer; Heterotermes indicola

Publication Review Process: Informally Refereed (Peer-Reviewed)

File size: 345 kb(s)

Date posted: 07/25/2018

This publication is also viewable on Treesearch:  view
RITS Product ID: 90690
Current FPL Scientists associated with this product (listed alphabetically)
Ibach, Rebecca E.
Research Chemist
Kirker, Grant
Research Forest Products Technologist
Mankowski, Mark
Research Entomologist

Additional items that might interest you
View the video celebrating FPL's 100 years of public service in 2010, from the producers of the Greatest Good....view

Research Highlights from FPL....view

Termite Eradication: A search for the Holy Grail.... view

Moisture Management in Residential Construction Series videos...view

Wood Floor Systems in Residential Construction Series videos....view
- FPL's Mission and Strategic Plan -

FPL's mission is to identify and conduct innovative wood and fiber utilization research that contributes to conservation and productivity of the forest resource, thereby sustaining forests, the economy, and quality of life. ... ..more »

- FPL Research Emphasis Areas -
Advanced Composites

As an integral part of the FPL mission, we improve the long-term sustainability of our Nation's forests by creating valuable composite products from biobased materials ... ..more »


Advanced Structures

The FPL has been in the forefront of wood-frame housing research since 1910 and has long been recognized as a world leader in such housing-related areas as engineered wood ... ..more »


Forest Biorefinery

We all know the compelling reasons that the United States needs to reduce its dependence on fossil fuels. Historically, the greatest increases in energy demand have been for transportation fuels ... ..more »


Nanotechnology

A leader in wood products research for over a century, the FPL is positioning itself to become the lead Federal research facility for the application of nanotechnology in forest products ... more »


Woody Biomass Utilization

Forests in the United States contain a substantial amount of small-diameter, overstocked, and underutilized material.FPL research projects are exploring the potential of the small-diameter ... ..more »