Behavior of beta cyfluthrin and imidacloprid in/on mango (Mangifera indica L.).
Soudamini Mohapatra, Deepa M., Jagadish G. K.
Author Affiliation: Pesticide Residue Laboratory, Indian Institute of Horticultural Research, Hessaraghatta Lake, P.O., Bangaluru, Karnataka 560 089, India.
Bulletin of Environmental Contamination and Toxicology 87 : 202-207
Abstract : Residue persistence of beta cyfluthrin and imidacloprid on mango was carried out after giving spray application of the combination formulation, beta cyfluthrin 9%+imidacloprid 21% (Solomon 300 OD) 3 times at the fruit formation stage. The treatments were, untreated control, standard dose of 75 g a.i. ha-1 and double dose of 150 g a.i. ha-1. Initial residues of beta cyfluthrin on mango fruits were 0.04 and 0.12 mg kg-1 from treatments at the standard and double doses, respectively. The residues dissipated with the half-life of 2.4 and 2.6 days and persisted for 5 days only. Initial residues of imidacloprid on mango fruits were 0.14 and 0.18 mg kg-1 from treatments at the standard and double doses, respectively. Imidacloprid residues degraded with the half-life of 3.06 and 4.16 days, respectively and persisted for 10 days. Mature mango fruits at harvest were free from residues of both insecticides. A safe pre-harvest interval of 8 days is recommended for consumption of mango fruits after treatment of the combination formulation.