title: Insecticide residues in head lettuce, cabbage, Chinese cabbage, and broccoli grown in fields.
abstract: The residues of four insecticides belonging to different families were studied on head lettuce (Lactuca sativa L. var. capitata L.), cabbage (Brassica oleracea Linn. var. capitata DC.), Chinese cabbage (Brassica pekinensis Skeels), and broccoli (Brassica oleracea var. italica) after pesticide application. To reduce application variability, a tank mix of acetamiprid 20% SP, chlorpyrifos 22.5% EC, deltamethrin 2.4% SC, and methomyl 40% SP was applied at recommended and double doses. Initial deposits of all pesticides on head lettuce were higher than those of the other three crops. The residues of chlorpyrifos and deltamethrin were higher than the maximum residue limits (MRLs) at recommended preharvest intervals (PHIs) on head lettuce and Chinese broccoli treated with higher doses. The residues of methomyl on head lettuce also showed the same phenomenon.
authors.affiliation: Department of Biotechnology, National Formosa University , 64 Wunhua Road, Huwei Township, Yunlin County 63201, Taiwan.
authors.forename: Miao-Fan
authors.initials: MF
authors.lastname: Chen
authors.forename: Jung-Fang
authors.initials: JF
authors.lastname: Chen
authors.forename: Jing-Jing
authors.initials: JJ
authors.lastname: Syu
authors.forename: Chi
authors.initials: C
authors.lastname: Pei
authors.forename: Hsiu-Pao
authors.initials: HP
authors.lastname: Chien
mesh_terms: D001937:Brassica / Q000737:chemistry* / Q000254:growth & development; D004390:Chlorpyrifos / Q000032:analysis; D005506:Food Contamination / Q000032:analysis*; D007306:Insecticides / Q000032:analysis*; D018545:Lactuca / Q000737:chemistry* / Q000254:growth & development; D000073943:Neonicotinoids; D009570:Nitriles / Q000032:analysis; D010573:Pesticide Residues / Q000032:analysis*; D011722:Pyrethrins / Q000032:analysis; D011725:Pyridines / Q000032:analysis
chemical_list: D007306:Insecticides; D000073943:Neonicotinoids; D009570:Nitriles; D010573:Pesticide Residues; D011722:Pyrethrins; D011725:Pyridines; C017180:decamethrin; C464485:acetamiprid; D004390:Chlorpyrifos