Détail de la notice
Titre du Document
Management and control of insecticide- resistant pear psylla (Cacopsylla pyri)
Auteur(s)
KOCOUREK Frantisek ; STARA Jitka
Résumé
The efficacy of different insecticides on adults and nymphs of Cacopsylla pyri from two localities in the Czech Republic was evaluated in biological tests. Resistance of C. pyri populations originated from an orchard intensively treated by: Nomolt 15 SC (teflubenzuron), Dimilin 48 SC (diflubenzuron), Zolone 35 EC (phosalone) and Trebon 30 EC (etofenprox) was proved in the laboratory tests. Population of C. pyri from an untreated locality was susceptible to the all tested insecticides. The highest efficacy on C. pyri nymphs was shown in tests in net slives when Calypso 480 SC (thiacloprid) and Vertimec 1.8 EC (abamectin) were applied. The efficacy of the tested insecticides against C. pyri adults in tarsal test was sufficient except of Cascade 5 EC (flufenoxuron) and Zolone 35 EC, when the C. pyri population from the chemically treated orchard was tested. The level of resistance of nymphs to phosalone was much higher than in adults of the overwintering generation. The efficacy of Sanmite 20 WP (pyridaben) and Calypso 480 SC on new hatched nymphs of C. pyri showing multiple resistance in field experiments in two different localities was excellent. On the basis of results, Sanmite 20 WP, Calypso 480 SC and Cascade 5 EC were recommended for antiresistant strategy against C. pyri. Sanmite 20 WP was recommended for the registration in the Czech Republic against C. pyri in pear orchards.
Editeur
Research Institute of Pomology and Floriculture
Identifiant
ISSN : 1231-0948
Source
Journal of fruit and ornamental plant research A. 2006, vol. 14, SUP3, pp. 167-175 [9 pages]
Langue
Anglais
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