Dissipation pattern and risk assessment of flubendiamide on chili at different agro-climatic conditions in India.

Abstract

Dissipation pattern and risk assessment of flubendiamide and its metabolite (desiodo flubendiamide) on chili were studied at four different agro-climatic locations of India at the standard and double dose at 60 and 120ga.i. ha(-1) at 10days interval. Quantification of residues was done on a high-performance liquid chromatograph (HPLC) with a photo diode array detector. The limit of quantification (LOQ) of this method was found to be 0.01mgkg(-1) while limit of detection (LOD) being 0.003mgkg(-1). Residues of flubendiamide were found to be below the determination limit in 15days at both the dosages in all locations. Half-life of flubendiamide when applied at 60 and 120ga.i. ha(-1) ranged from 0.85 to 1.80 and from 0.95 to 2.79days, respectively. On the basis of data generated under the All India Network Project on Pesticide Residues, a preharvest interval (PHI) of 1day has been recommended and the flubendiamide 480 SC has been registered for use on chili in India by the Central Insecticide Board and Registration Committee, Ministry of Agriculture, Government of India. The maximum residue limit (MRL) of flubendiamide on chili has been fixed by the Food Safety Standard Authority of India, Ministry of Health and Family Welfare, Government of India, as 0.02μgg(-1) after its risk assessment.