title: Plant Uptake and Distribution of Endosulfan and Its Sulfate Metabolite Persisted in Soil.
abstract: The distributions of endosulfan (ED) residues (α-, β-isomers, and sulfate-metabolite) in cucumbers grown in soils treated with ED at concentrations of 20 and 40 mg kg-1 were assessed using indoor and outdoor experiments. In all treatments, degradation rates of the α-isomer in soils were higher than that of the β-isomer. In the indoor tests, uptake amounts of total ED by cucumbers, after 15 d of growth, were 7.8 and 14.5 mg kg-1 in 20 and 40 mg kg-1-treated pots, respectively. For growth time from 15 to 30 d, uptake amounts in 20 and 40 mg kg-1-treated pots were 3.8 and 7.9 mg kg-1, respectively. Outdoor tests resulted in smaller ED residues in cucumbers than those in indoor tests. In both indoor and outdoor tests, ED residues absorbed were highest in roots, and the α-isomer was the more frequently absorbed isomer. These results will be useful for determining management criteria for soil persistent pesticides.
authors.affiliation: School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea.
authors.forename: Jeong-In
authors.initials: JI
authors.lastname: Hwang
authors.affiliation: School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea.
authors.forename: Sung-Eun
authors.initials: SE
authors.lastname: Lee
authors.affiliation: School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea.
authors.forename: Jang-Eok
authors.initials: JE
authors.lastname: Kim
mesh_terms: D018553:Cucumis sativus / Q000737:chemistry / Q000378:metabolism*; D004726:Endosulfan / Q000378:metabolism*; D018517:Plant Roots / Q000378:metabolism*; D012987:Soil; D013237:Stereoisomerism
chemical_list: D012987:Soil; D004726:Endosulfan