Residue behavior and risk assessment of beta cyfluthrin 8.91% + imidacloprid 19.81% OD in chilli (Capsicum annum L.)

Abstract

A field experiment was conducted at Kalliyoor Panchayath of Thiruvanathapuram disrtrict to assess the dissipation and risk assessment of a combination insecticide, beta cyfluthrin 8.91% + imidacloprid 19.81% OD in chilli. The residue analysis conducted at Pesticide Residue Research and Analytical Laboratory at College of Agriculture, vellayani, Thiruvanathapuram revealed that, the insecticide beta cyfluthrin and imidacloprid had an initial residue of 0.49 and 0.18 mg Kg-1 respectively. Beta cyfluthrin reached LOQ on 15th day after spraying while, imidacloprid reached LOQ on 7th day after spraying. Risk assessment studies revealed that the TMRC value less than that of MPI, indicated the safety of particular chemicals.