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Freilandversuche zur Bekämpfung des Apfelwicklers, Laspeyresia pomonella (L.), mit Granuloseviren / Field tests using a granulosis virus to control the codling moth (Laspeyresia pomonella [L.])

Jürg Huber and Erich Dickler
Zeitschrift für Pflanzenkrankheiten und Pflanzenschutz / Journal of Plant Diseases and Protection
Vol. 82, No. 8/9 (1975), pp. 540-546
Published by: Verlag Eugen Ulmer KG
Stable URL: http://www.jstor.org/stable/43216366
Page Count: 7
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Freilandversuche zur Bekämpfung des Apfelwicklers, Laspeyresia pomonella (L.), mit Granuloseviren / Field tests using a granulosis virus to control the codling moth (Laspeyresia pomonella [L.])
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Abstract

Ein wirtsspezifisches Granulose-Virus gegen den Apfelwickler, Laspeyresia pomonella (L.), wurde 1974 in einer Spindelbusch-Ertragsanlage unter praxisnahen Bedingungen im Vergleich zu einer Spritzfolge mit chemischen Insektiziden geprüft. Vier Virusbehandlungen (Konzentration 8 × 10⁷ Viruskapseln/ml Wasser) in 14-tägigen Abständen ausgebracht, ergaben eine gleich gute Befallsreduktion (83 %) wie die gleiche Anzahl von Spritzungen mit herkömmlichen Insektiziden. Der gesamte Rückgang der Apfelwicklerpopulation auf der virusbehandelten Fläche betrug 98 %, gemessen an der Anzahl von Diapauselarven in Fangstreifen im Herbst. A granulosis virus as control measure against codling moth, Laspeyresia pomonella (L.), was tested in a commercial apple orchard in comparison with a usual sequence of chemical insecticide treatments. Four virus sprays with a concentration of 8 × 10⁷ virus capsules/ml at two weeks intervals were as effective as the same number of insecticide treatments, reducing the codling moth damage by 83 %. The total reduction of the codling moth population in the virus treated plot was 98 %, determined by the number of diapausing larvae in trap bands in fall.

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