title: Degradation of cyprodinil, fludioxonil, cyfluthrin and pymetrozine on lettuce after different application methods.
abstract: Degradation of two fungicides (cyprodinil and fludioxonil) and two insecticides (cyfluthrin and pymetrozine) applied on iceberg and romaine lettuce under field conditions with different methods (portable mistblower and chemigation) was studied field data showed that both distribution methods and lettuce cultivar affect the degradation trends of examined pesticides. In these trials the residues of all active ingredients after pre-harvest time were less than fifty's maximum residue levels; the values in the romaine cultivar were generally higher than those in iceberg lettuce. After pre-harvest time residues of pesticides applied on romaine lettuce by portable motor sprayer were always higher than those obtained by the chemigation system.
authors.affiliation: Centro Regionale Agrario Sperimentale - Regione Sardegna, Cagliari, Italy. laboratorio.chimico@cras.sardegna.it
authors.forename: Maddalena
authors.initials: M
authors.lastname: Cabizza
authors.forename: Maurizio
authors.initials: M
authors.lastname: Satta
authors.forename: Susanna
authors.initials: S
authors.lastname: Falconi
authors.forename: Monica
authors.initials: M
authors.lastname: Onano
authors.forename: Giovanni
authors.initials: G
authors.lastname: Uccheddu
mesh_terms: D004149:Dioxoles / Q000008:administration & dosage / Q000032:analysis; D005506:Food Contamination / Q000032:analysis*; D005659:Fungicides, Industrial / Q000008:administration & dosage / Q000032:analysis*; D007306:Insecticides / Q000008:administration & dosage / Q000032:analysis*; D018545:Lactuca / Q000737:chemistry*; D009570:Nitriles / Q000008:administration & dosage / Q000032:analysis; D010573:Pesticide Residues / Q000032:analysis*; D011722:Pyrethrins / Q000008:administration & dosage / Q000032:analysis; D011743:Pyrimidines / Q000008:administration & dosage / Q000032:analysis; D011758:Pyrroles / Q000008:administration & dosage / Q000032:analysis; D013997:Time Factors; D014227:Triazines / Q000008:administration & dosage / Q000032:analysis
chemical_list: D004149:Dioxoles; D005659:Fungicides, Industrial; D007306:Insecticides; D009570:Nitriles; D010573:Pesticide Residues; D011722:Pyrethrins; D011743:Pyrimidines; D011758:Pyrroles; D014227:Triazines; C108338:cyprodinil; C108339:fludioxonil; C480311:pymetrozine; C052570:cyfluthrin