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International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472
EISSN: 1735-2630
Vol. 5, No. 3, 2008, pp. 425-429
Bioline Code: st08047
Full paper language: English
Document type: Research Article
Document available free of charge

International Journal of Environment Science and Technology, Vol. 5, No. 3, 2008, pp. 425-429

 en Influence of biotic-abiotic factors on the degradation of novaluron in tropical soil
Das, P.; Pal, R. & Chowdhury, A.

Abstract

In this study, the degradation of novaluron (benzoylphenyl urea insect growth regulator) was investigated under controlled laboratory conditions in clay loam alluvial and coastal saline soils of West Bengal, India. The application rates were field rate (FR); 2FR and 10FR. The incubation study was carried out at 30 °C and 60% of maximum water holding capacity of both the soils. Degradation of novaluron in both the soils followed first order reaction kinetics at all application rates under non-sterile and sterile conditions. The half-lives of novaluron in non-sterilized soils ranged from 17.0 17.8 days (alluvial soil) and 11.4 12.7 days (coastal saline soil), while the values in case of the sterilized soils were 53.7 59.0 days (alluvial soil) and 28.9 29.8 days (coastal saline soil) respectively. The novaluron degradation patterns were found to be highly influenced by soil types, application rates, and biotic abiotic factors. Abiotic factors strongly influenced novaluron degradation in both the soils. Biotic degradation was higher in alluvial soil compared to the coastal saline soil.

Keywords
Pesticide, pest controlling agent, benzoylphenyl urea, sterile soil

 
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