MICROBIAL DEGRADATION OF ENDOSULFAN IN AGRICULTURAL SOILS
PDF

Keywords

Endosulfan
Degradation
Half-life
Soil

Abstract

A study of the degradation of endosulfan (6, 7, 8, 9, 10, 10-hexachloro – 1, 5, 5a, 6, 9, 9a –hexahydro – 6, 9- methano – 2, 4, 3 – benzodioxanthiepin 3 – oxide) in Malaysian sandy loam and clay soils was carried out using a radioisotopic technique under laboratory conditions. It was demonstrated that endosulfan possessed long half-lives of 433, 495 and 462 days in aerobic sandy loam, aerobic clay and anaerobic clay soils respectively. Endosulfan degrades faster in non-sterile than in sterile soils. This study indicates that microorganisms are involved in the degradation of endosulfan. In general, degradation of the pesticide was relatively higher in the clay soil than in the sandy soil. Apart from the parent compounds, α- and β-isomers, the degradation products include endosulfan sulphate and three minor unidentified products.

 

https://doi.org/10.29037/ajstd.161
PDF

References

Beach, E.D., Fernandez-Cornejo,J. and Huang, W.Y. (1995), The potential risks of groundwater and surface water contamination by agricultural chemicals used in vegetable production. J. Environ. Sci. HealthA3, pp. 1295-1325.

Cheah, U.B., Kirkwood, R.C. and Lum, K.Y. (1998), Degradation of four commonly used pesticides in Malaysian agricultural soils, J. Agric. Food Chem., vol. 46, pp. 1217-1223.

Christin M.S., Menard L., Gendron A.D., Ruby S., Cyr D., Marcogliese D.J., Rollins-Smith L., and Fournier M. (2004), Effects of agricultural pesticides on the immune system of Xenopus laevis and Rana pipiens. Aquatic Toxicol,vol. 67, pp. 33-43.

Ghadiri H. and Rose C.W. (2001), Degredation of endosulfan in a clay soil from cotton farms of western Quensland, J. Environ. Manag, vol.62, pp.155-169.

Hammamda, S., Calmon, M. and Calmon, J.P. (1994), Kinetics and hydrolysis mechanism of chlorsulfuron and metsulfuron-methyl, Pestic. Sci., vol. 40, pp. 71-76.

Ismail, B.S., Goh, K.M. and Kader, J. (1996), Effects of metsulfuron-methyl on microbial biomass and populations in soils, J. Environ. Sci. Health B31, pp. 987-999.

Kathpal, T.S., Singh, A., Dhankhar, J.S. and Singh, G. (1997), Fate of endosulfan in cotton soil under sub-tropical conditions of Northern India, Pestic. Sci., vol. 50, pp. 21-27.

Miles, J.R.W. and Moy, P.(1979), Degradation of endosulfan and its metabolites by a mixed culture of soil microorganisms, Bull. Environ. Contam. Toxicol, vol. 23, pp. 13-19.

Pennington, P.L., DeLorenzo, M.E., Lawton, J.C., Strozier, E.D., Fulton, M.H. and Scott, G.I. (2004), Modular estuarine mesocosm validation: ecotoxico logical assessment of direct effects with the model compound endosulfan, J Experimental Marine Biol. and Ecol., vol. 298, pp. 369-387.

Rao, D.M.R. and Murty, A.S. (1980), Persistence of endosulfan in soils, J. Agric. Food Chem., vol. 28, pp. 1099-1101.

Steward, D.K.R. and Cairns, K.R. (1994), Endosulfan persistence in soil and uptake by potato tubers, J. Agric. Food Chem., vol. 22,pp. 984-986.

Walker, A. (1978), Simulation of persistence of eight soil applied herbicides, Weed Res., vol. 18, pp. 305-313.

Yoshida, T. and Castro, T.F. (1970), Degrad ation of gamma-BHC in rice soils, Soil Sci. Soc. Amer. Proc., vol. 34, pp. 440-442.

Creative Commons License

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

Copyright (c) 2017 B.S. Ismail, A.O.S. Enoma

Downloads

Download data is not yet available.