Persistence of α and ß isomers of endosulphan and endosulphan sulphate in diverse soils of India as influenced by flooding

Abstract

Laboratory studies were undertaken to evaluate the persistence of α‐endosulphan, ß‐endosulphan and endosulphan sulphate in four diverse soils under non‐flooded and flooded conditions. Significant variations were observed in the extent of persistence of the three chemicals in different non‐flooded soils with maximum persistence observed in Alfisol and the least in Mollisol having near neutral pH and higher organic matter. Degradation was more in all the flooded soils than in the non‐flooded counterpart but in Vertisol under flooded and non‐flooded conditions, the rate of degradation of endosulphan sulphate was found to be nearly same.

Key words:

• α‐endosulphan
• ß‐endosulphan
• endosulphan sulphate
• persistence
• flooded soils

Notes

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