Abstract
Studies on the wood preserving techniques against subterranean termites have been undertaken with a view to promote the use of inorganic indigenous pesticides in our country. The thin films of gelatine solution (glue of animal hides) containing 10% calcium carbonate or 5% copper sulphate as well as sodium silicate solution containing 12% calcium carbonate +10% zinc oxide coated separately on wooden stakes prevented termite attack in soil up to 2, 4 and 5 years, respectively. Whereas control wooden stakes were found to be severely damaged by termites within 6 months. Stakes coated with Solignum®-white used as standard wood preservative for comparison remained free from termite infestation for a period of 5 years.
Zusammenfassung
Es wurden Untersuchungen mit dem Ziel durchgeführt, mit Hilfe anorganischer Substanzen Hölzer gegen subterrane Termiten zu schützen. Verwendet wurden dünne Überzüge aus Gelatine-Lösungen (gewonnen aus tierischen Häuten), welche 10% Kalziumkarbonat oder 5% Kupfersulfat sowie aus Natriumsilikat-Lösungen, welche 12% Kalziumkarbonat+10% Zinkoxid enthielten. Mit diesen 3 Lösungen—getrennt—angestrichene Holzstücke blieben unter der Erdoberfläche bis zu 2, 4 und 5 Jahren (in vorstehender Reihenfolge der Substanzen) frei von Termitenfraß. Unbehandelte Holzstücke wurden dagegen binnen 6 Monate von Termiten schwer beschädigt. Holzstücke, die zur Kontrolle mit dem Standard-Schutzanstrich aus Solignum-weiß bestrichen wurden, blieben 5 Jahre frei von Termitenbefall.
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Roomi, M.W., Shah, A.H., Anwarullah, M. et al. Studies on the control of subterranean termites by inorganic pesticides. Anz. Schadlingskde., Pflanzenschutz, Umweltschutz 63, 50–52 (1990). https://doi.org/10.1007/BF01903465
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DOI: https://doi.org/10.1007/BF01903465