Field And Laboratory Evaluation Of Degradation, Leaching, Stability In Storage And Bioavailability Of Soil Termiticides On The Asian Subterranean Termites, Coptotermes gestroi (Blattodea: Rhinotermitidae)
| dc.contributor.author | Mohd Rashid, Mohd Fawwaz | |
| dc.date.accessioned | 2019-05-09T03:06:17Z | |
| dc.date.available | 2019-05-09T03:06:17Z | |
| dc.date.issued | 2018-05 | |
| dc.description.abstract | Soil termiticide treatment is a fundamental method to control termite population and infestation by creating a continuous barrier surrounding the structures. However, termiticides may dissipate, depending on a half-life, a degradation rate, a leaching activity and a storage method. In this study, the degradation rate and half-life of three commercially available termiticides, namely Maxxthor 100 SC (bifenthrin), Chalcid 5.0 SC (fipronil) and Prothor 200 SC (imidacloprid) were determined under the field and laboratory conditions. Fipronil showed the most persistent termiticide in the field study as it had a lower degradation rate (top= 4.19 ppm/day; bottom= 4.06 ppm/day) and a higher half-life (top= 267.99 days; bottom= 282.56 days). While, imidacloprid had the highest degradation rate (top= 6.87 ppm/day; bottom= 6.87 ppm/day) and a lower half-life (top= 32.25 days; bottom= 32.25 days). The laboratory study on termiticide degradation indicated that bifenthrin was more persistent in the soils compared to fipronil and imidacloprid. The bioavailability test on Coptotermes gestroi [Wasmann] showed that bifenthrin had the lowest values of LT50 (top= 7.114 hours; bottom= 4.966 hours) and LT95 (top= 37.121 hours; bottom= 21.243 hours) in the field study as well as in the laboratory study (average LT50= 21.119 hours; LT95= 38.454 hours). Leaching activity of the termiticides using a soil column method revealed that bifenthrin had a good adsorption characteristic as it noted a higher concentration at the top of the column (Sandy loam= 892.77 ppm; Loamy sand= 1060.93 ppm) compared to fipronil and imidacloprid. | en_US |
| dc.identifier.uri | http://hdl.handle.net/123456789/8172 | |
| dc.language.iso | en | en_US |
| dc.publisher | Universiti Sains Malaysia | en_US |
| dc.subject | Soil termiticide treatment is a fundamental | en_US |
| dc.subject | to control termite population | en_US |
| dc.title | Field And Laboratory Evaluation Of Degradation, Leaching, Stability In Storage And Bioavailability Of Soil Termiticides On The Asian Subterranean Termites, Coptotermes gestroi (Blattodea: Rhinotermitidae) | en_US |
| dc.type | Thesis | en_US |
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