Journal ID : AMA-29-08-2022-11645
[This article belongs to Volume - 53, Issue - 09]
Total View : 477

Title : Residual pattern of imidacloprid and its metabolites in different soil types

Abstract :

Continuous and ever-increasing use of imidacloprid for the control of sucking pests, chewing beetles and soil insects, leads to diverse tribulations in the environment. The metabolites formed after degradation may have greater insecticidal and mammalian toxicity. The degradation studies in soil are very imperative to study the evaluation of pesticides and its metabolic products in the environment. Due to very limited information regarding dissipation behavior and its metabolic degradation of imidacloprid in soil, the present study was undertaken to estimate the dissipation pattern of the parent compound imidacloprid and its metabolites in different types of soil. Different types of soil i.e. sandy loam, loamy sand and clay loam soil were collected from different geographical locations of Punjab. Each type of the soil samples were treated with different concentrations of imidacloprid i.e. 100, 200 and 400 mg/kg. The samples were maintained at 25 ± 2°C in laboratory. After 7 days of treatment with 100 mg/kg imidacloprid, the total residues of imidacloprid and its metabolites for sandy loam, loamy sand and clay loam soil was reported to be 65.39, 68.96 and 69.99 mg/kg, respectively. Sandy loam soil type showed greater dissipation behaviour of imidacloprid followed by loamy sand and clay loam soil. Even after treatment with high doses of imidacloprid, traces of metabolites residues such as 6-chloronicotinic acid, nitroguanidine, olefin, nitrosimine, urea and 5-hydroxy were detected.

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