Dormant and postblossom application of OP insecticides: a comparison of their effects on pests and beneficials in apple orchards

Dormant and postblossom spraying programs were compared in two Swiss apple orchards with the aim of evaluating their impact on the whole arthropod complex. The programs used mineral oil and a ready mixture of mineral oil and methidathion as a dormant spray for control of winter eggs of the European...

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Bibliographic Details
Published in:Zeitschrift für Pflanzenkrankheiten und Pflanzenschutz (1970) 1989-02, Vol.96 (1), p.81-88
Main Authors: Sechser, B. (Ciba-Geigy Ltd., Basel (Switzerland). Agricultural Div.), Ruzette, M.A, Engelhardt, M
Format: Article
Language:English
Subjects:
Acari
ACARINA
AFIDOS
Aktivitaet
Animal, plant and microbial ecology
APHIDE
Aphididae
Aphis pomi
Applied ecology
ARTHROPODE AUXILIAIRE
ARTROPODOS PARA CONTROL BIOLOGICO
Azinphosmethyl
Biological and medical sciences
Chemical control
COMPOSE ORGANOPHOSPHORE
COMPUESTO ORGANICO DEL FOSFORO
Control
CYDIA
Cydia pomonella
Dysaphis
Ecotoxicology, biological effects of pollution
EFECTOS SECUNDARIOS
Effects of pollution and side effects of pesticides on protozoa and invertebrates
EFFET SECONDAIRE
Fundamental and applied biological sciences. Psychology
Generalities
Homoptera
INSECTICIDAS
INSECTICIDE
Insektizid
Lepidoptera
MALUS
Methidathion
METHODE D'APPLICATION
METODOS DE APLICACION
Nebenwirkung
Nuetzling
Panonychus ulmi
Phosphamidon
Phosphorsaeureester
Phytopathology. Animal pests. Plant and forest protection
Praedator
Protozoa. Invertebrates
Schweiz
Verfahren
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Summary:Dormant and postblossom spraying programs were compared in two Swiss apple orchards with the aim of evaluating their impact on the whole arthropod complex. The programs used mineral oil and a ready mixture of mineral oil and methidathion as a dormant spray for control of winter eggs of the European red mite, Panonychus ulmi, several aphid species including Aphis pomi, Dysaphis spp., and the apple psyllid, Psylla mali. Phosphamidon and azinphosmethyl were mainly applied to suppress codling moth, Cydia pomonella. Pirimicarb was used against mobile stages of aphids and, where necessary, cyhexatin for European red mite control in both orchards. Apple scab and mildew were controlled by a mixture of penconazol and captan in all plots, including the untreated check. The dormant sprays resulted in acceptable suppression of the overwintering pests and had no delaying effect on the appearance of predators at the beginning of the growing season. Both postblossom treatments gave satisfactory codling moth control and allowed a sufficiently high increase of predator density to contribute substantially to the reduction of mite population
ISSN:0340-8159