Food crop grouping for setting maximum residue limits (MRLs) and facilitating the availability of pesticides for minor crop use—Cucurbit vegetable group (II)

Abstract

Cucumber, bitter gourd and zucchini sprayed once with a mixture of chlorfenapyr, iprodione, permethrin and triflumizole were harvested at 1-14 days after application. Samples from each harvest were analyzed for pesticide residue by gas chromatography. No differences in the initial residue or the rate of disappearance were observed between cucumber, bitter gourd and zucchini. Individual pesticide residues were low compared with the MRLs of cucumber chlorfenapyr 1 ppm, iprodione 5.0 ppm, permethrin 0.5 ppm, triflumizole 1.0 ppm. Cucumbers would be a suitable representative crop in the cucurbit vegetable group for evaluating pesticide residue levels.