Toxic Effect of Some Chemical Compounds of Sap and    Heartwood of Some Forest Trees on Termite

Al &ndash; Mallah, Nazar M.; Mustafa, Shahin A.; Qasseer, Waleed A.

doi:10.32894/kujss.2010.41465

Toxic Effect of Some Chemical Compounds of Sap and Heartwood of Some Forest Trees on Termite

Document Type : Research Paper

Authors

¹ College of Agriculture and Forestry - University of Musol

² College of Agriculture - University of Koya

10.32894/kujss.2010.41465

Abstract

The results of the toxic effect study of phenols, terpens, alkaloides, oils and water extracts for both sapwood and heartwood of Platanus orientalis L. , Populus nigra L., Cupressus sempervirens L , Pinus brutia Ten., Salix acomphylla Boiss. and Eucalyptus camaldulensis Dehn. On termite workers showed a significant toxicity variation according to the type of compound, wood kind and tree species. The extractions of phenols, terpens oils and water of both sap and heartwood of Pinus brutia were more toxic to termite than the other compounds. The results of the fractional extractions for both sapwood and heartwood for pine wood were a high mortality on termite workers with the general averages 57.1, 70.8 % respectively. Whereas, the toxicity indicator values were 100 % for extractions of phenols, terpens and aqueous fraction for both sapwood and heartwood of pine wood, respectively. The alkaloids extract of heartwood of Pinus brutia and Platanus orientalis and sapwood of Eucalyptus camaldulensis showed high toxicity to termite workers and their LC50 values reached 0.040, 0.045, and 0.045 respectively.

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