Residue analysis of premix formulation of fipronil and imidacloprid and its metabolites in hot pepper (Capsicum annum)

REENA  CHAUHAN; SUSHIL  AHLAWAT; SURENDER SINGH  YADAV; NISHA  AHLAWAT; INDU  CHOPRA

doi:10.56093/ijas.v94i11.143854

Authors

REENA CHAUHAN Chaudhary Charan Singh Haryana Agricultural University, Hisar, Haryana 125 004, India
SUSHIL AHLAWAT Chaudhary Charan Singh Haryana Agricultural University, Hisar, Haryana 125 004, India
SURENDER SINGH YADAV Chaudhary Charan Singh Haryana Agricultural University, Hisar, Haryana 125 004, India
NISHA AHLAWAT Chaudhary Charan Singh Haryana Agricultural University, Hisar, Haryana 125 004, India
INDU CHOPRA ICAR-Indian Agricultural Research Institute, New Delhi

https://doi.org/10.56093/ijas.v94i11.143854

Keywords:

Combination product, Drench application, Green pepper, LOQ, Metabolites

Abstract

A field experiment was conducted during 2018–19 and 2019–20 at Chaudhary Charan Singh Haryana Agricultural University, Hisar, Haryana to assess the dissipation pattern of a ready mix formulation i.e. fipronil and imidacloprid along with their metabolites in fruits of hot pepper (Capsicum annum L.). The Hot pepper variety Kranti was used for the study. Quantitative analysis was done on gas liquid chromatography (GLC) and high pressure liquid chromatography (HPLC) for fipronil and imidacloprid with their metabolites, respectively. At the suggested dose, fipronil residues were lower than 0.01 mg/kg in the studied years. However, in double doses, the total residues of fipronil were detected on the 5^th (0.071 mg/kg) and 3^rd (0.043 mg/kg) day for the 1^st and 2^nd year following drench application. Imidacloprid was detected only in the subsequent year’s trial in double doses. Residual leftovers of imidacloprid metabolite (6- CNA) were lower than 0.01 mg/kg (LOQ). No residual leftovers were present in fully ripened red chilli and harvest time samples of soil.

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