title: Toxicity persistence in runoff water and soil in experimental soybean plots following chlorpyrifos application.
abstract: Toxicity persistence in runoff water and soil was studied in experimental soybean plots in successive runoff events produced by an irrigation system. Three chlorpyrifos applications throughout the growing period were assayed. Runoff and soil toxicity to the amphipod Hyalella curvispina and the fish Cnesterodon decemmaculatus was assessed. Toxicity persistence to H. curvispina was shorter in the early and midseason applications (23-28 and 21-69 days in runoff and soil, respectively) and longer in the late application (more than 140 days). The same trend was observed for C. decemmaculatus: 13 days for early and 56 for the late application.
authors.affiliation: ILPLA, Instituto de Limnología 'Dr. Raúl. A. Ringuelet' (CONICET-CCT La Plata-UNLP), Av. Calchaquí Km 23.5, 1888, Florencio Varela, Buenos Aires, Argentina.
authors.forename: Hernán
authors.initials: H
authors.lastname: Mugni
authors.forename: Pablo
authors.initials: P
authors.lastname: Demetrio
authors.forename: Ariel
authors.initials: A
authors.lastname: Paracampo
authors.forename: Martín
authors.initials: M
authors.lastname: Pardi
authors.forename: Gustavo
authors.initials: G
authors.lastname: Bulus
authors.forename: Carlos
authors.initials: C
authors.lastname: Bonetto
mesh_terms: D000383:Agriculture; D033304:Amphipoda; D000818:Animals; D004390:Chlorpyrifos / Q000633:toxicity*; D004784:Environmental Monitoring; D007306:Insecticides / Q000633:toxicity*; D013025:Glycine max; D014874:Water Pollutants, Chemical / Q000633:toxicity*
chemical_list: D007306:Insecticides; D014874:Water Pollutants, Chemical; D004390:Chlorpyrifos