The predatory mite Typhlodromus pyri (Acari: Phytoseiidae) as a biocontrol agent of Eriophyes pyri (Acari: Eriophyidae) on pear

Abstract: The effectiveness of the predatory mite Typhlodromus pyri and of an application of Polysulphide-Ca was compared during 2006–2008. The experiment showed differences in infestation levels of pear leaves caused by Eriophyes pyri. The highest percentage of leaves with symptoms was found in untreated control group (⊘ 20.9%); the lowest percentage was found in plots treated with T. pyri (⊘ 3.7%); and a slightly higher percentage was found in plots treated with Polysulphide-Ca (⊘ 8.6%). During 2006–2008 the percentage of leaves with symptoms was approximately the same only in the untreated control plots (from 20.3% to 21.5%). The percentage of leaves with characteristic symptoms in plots treated with T. pyri decreased from 5.5% in 2006 to 4.3% in 2007, and to 1.3% in 2008. On the other hand, the percentage of leaves with symptoms in plots treated with Polysulphide-Ca increased from 5.5% in 2006 to 8.5% in 2007, and to 11.8% in 2008. The intensity of symptoms on infested leaves was also different depending on treatments and years. The average biological activity was 82.4% in plots receiving releases of T. pyri and 58.8% in plots treated with Polysulphide-Ca.

Standort
Deutsche Nationalbibliothek Frankfurt am Main
Umfang
Online-Ressource
Sprache
Englisch

Erschienen in
The predatory mite Typhlodromus pyri (Acari: Phytoseiidae) as a biocontrol agent of Eriophyes pyri (Acari: Eriophyidae) on pear ; volume:66 ; number:1 ; year:2011 ; pages:146-148 ; extent:3
Biologia ; 66, Heft 1 (2011), 146-148 (gesamt 3)

Urheber
Praslička, Ján
Schlarmannová, Janka
Matejovičová, Barbora
Tancík, Ján

DOI
10.2478/s11756-010-0137-0
URN
urn:nbn:de:101:1-2409221709471.112904082143
Rechteinformation
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Letzte Aktualisierung
15.08.2025, 07:29 MESZ

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Beteiligte

  • Praslička, Ján
  • Schlarmannová, Janka
  • Matejovičová, Barbora
  • Tancík, Ján

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