Year : 2022, Volume : 17, Issue : 1
First page : ( 105) Last page : ( 109)
Print ISSN : 2229-628X. Online ISSN : 2582-2683. Published online : 2022 January 4.
Article DOI : 10.5958/2582-2683.2022.00022.3

Biodegradation of imidacloprid by microbial consortium in sterile and non-sterile soil under in vitro conditions

Bhattacherjee Anup K*, Shukla Pradeep K, Dikshit Abhay, Garg Neelima

ICAR-Central Institute for Subtropical Horticulture, Rehmankhera, Lucknow - 226101, India

*e-mail: bhatchaj_ak@yahoo.com

Received:  07  ,  2021; Accepted:  27  ,  2021.

Abstract

Investigation on degradation of imidacloprid at 5 and 10 mg L^–1 concentrations by microbial consortium in sterile and non-sterile soil was undertaken under in vitro conditions. HPLC analysis of imidacloprid residues done at 10 days interval for a period of 50 days showed that the rate of degradation of imidacloprid by microbial consortium was 52.63 and 51.85 per cent in the non-sterile and 72.69 and 73.21 per cent in the sterile soil at 5 and 10 mg L^–1 doses, respectively. Imidacloprid degraded significantly faster in both treated sterile and non-sterile soil compared to control soil. The rate of degradation followed first-order and pseudo first-order kinetics in non-sterile and sterile soil, respectively. The study concluded that microbial consortium could effectively be used for degrading imidacloprid in sterile and non-sterile soil under in vitro conditions.

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Keywords

Imidacloprid, Degradation, Microbial consortia, Sterile soil, Non-sterile soil.

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