2019•Journal of Entomology and Zoology StudiesOpen access

Dissipation of imidacloprid residues in okra fruits in Tarai region of Uttarakhand

Sneha Joshi, RM Srivastava, AH Ahmad, Manish Kumar Verma

Abstract

Dissipation behavior of neonicotinoide insecticide, imidacloprid (Imidacel 17.8 SL), in okra fruits was studied following application at dose 20g a.i. ha-1. Observations showed an initial deposition of 1.027 mgkg-1 imidacloprid residues in okra fruit samples. Imidacloprid residue levels on 1, 3, 5 days after spray was observed 0.688 mgkg-1, 0.367 mgkg-1, 0.197 mgkg-1, respectively. The residues of imidacloprid went below detection limit within 7 days of application. The estimated half life (t1/2) of imidacloprid in okra fruits was observed to be 2.094 days. The residue level went below maximum residue limit (0.7mg kg-1 for okra) within 3 days at the recommended dose.

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Key concepts: Imidacloprid, Residue (chemistry), Horticulture, Maximum Residue Limit, Toxicology, Pesticide residue, Chemistry, Biology