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Registros recuperados: 5
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Einatz entomopathogener Pilze gegen die Kirschfruchtfliege Rhagoletis cerasi – Erste Feldresultate Organic Eprints
Daniel, Claudia; Keller, Siegfried; Wyss, Eric.
Field efficacy of entomopathogenic fungi to control Rhagoletis cerasi. Two myco-insecticides, Naturalis-L (Beauveria bassiana) and PreFeRal®WG (Paecilomyces fumosoroseus), were applied against adult R. cerasi Loew (Diptera: Tephritidae) in two orchards in north-western Switzerland in summer 2006. Both products were able to cause mycosis on adult flies under field conditions. However, only Naturalis-L significantly reduced the number of damaged fruits (efficacy: 69-74%), whereas damaged fruits were not significantly reduced with PreFeRal (efficacy: 27%). For B. bassiana living fungal propagules were still detectable seven days after application while the fungal propagules of P. fumosoroseus remained only three days. A control of R. cerasi with...
Tipo: Journal paper Palavras-chave: Crop husbandry; Fruit and berries; Post harvest management and techniques.
Ano: 2008 URL: http://orgprints.org/20266/1/F_2008_02KifliFeldDgaae.pdf
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Einfluss der Bewirtschaftung auf die Nützlingsfauna Organic Eprints
Jossi, Werner; Bruderer, Ruth; Valenta, Anna; Schweizer, Christian; Scherrer, Caroline; Keller, Siegfried; Dubois, David.
Laufkäfer, Kurzflügler und Spinnen gehören zu den nützlichen Bewohnern der Feldfauna. Auf dem Betrieb Burgrain wurde in drei Anbausystemen integrierte Produktion (IP) intensiv, IP extensiv und biologisch von 1997 bis 2002 das Vorkommen dieser räuberischen Arthropoden mit Bodenfallen untersucht. Die Laufkäfer traten in den drei beprobten Kulturen Sommergerste, Winterweizen und Körnermais etwa gleich häufig auf. Bei biologischer Bewirtschaftung wurden in Sommergerste und Winterweizen gesichert höhere Aktivitätsdichten als bei den zwei IP-Anbausystemen festgestellt. Im Durchschnitt der drei Ackerkulturen wurden bei Bio 22 % und bei IPextensiv 8 % mehr Laufkäfer gefangen als bei IPintensiv. Es scheint, dass vor allem der höhere Unkrautbesatz bei Bio und...
Tipo: Journal paper Palavras-chave: Biodiversity and ecosystem services.
Ano: 2004 URL: http://orgprints.org/3819/1/Einfluss_Bewirtsch_auf_Nuetzlinge.pdf
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Field applications of entomopathogenic fungi against Rhagoletis cerasi Organic Eprints
Daniel, Claudia; Keller, Siegfried; Wyss, Eric.
Two myco-insecticides, Naturalis-L (Beauveria bassiana) and PreFeRal®WG (Paecilomyces fumosoroseus), were applied against adult R. cerasi Loew (Diptera: Tephritidae) in two orchards in north-western Switzerland in summer 2006. Both products were applied at a concentration of 5.75x104 CFU/ml. With four applications at seven day intervals the whole flight period of R. cerasi was fully covered. During this period the relative humidity averaged 66.3% (5th June – 6th July), the temperature averaged 20.5°C. Under these conditions only Naturalis-L significantly reduced the number of damaged fruit (efficacy: 69-74%), whereas damaged fruits were not significantly reduced with PreFeRal (efficacy: 27%). For B. bassiana living fungal propagules were still detectable...
Tipo: Journal paper Palavras-chave: Crop husbandry Crop health; Quality; Protection.
Ano: 2008 URL: http://orgprints.org/20265/1/E_2008_08KifliFeldIOBC.pdf
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Susceptibility of Rhagoletis cerasi to entomopathogenic fungi Organic Eprints
Daniel, Claudia; Keller, Siegfried; Wyss, Eric.
The effects of six fungus strains (Deuteromycotina: Hyphomycetes) on the mortality of different life stages of the European cherry fruit fly, Rhagoletis cerasi Loew (Diptera: Tephritidae), were assessed in a series of laboratory experiments. All fungus strains were able to cause mycosis to larvae and adults of R. cerasi. However, virulence varied considerably among the strains. Effects on L3-larvae were negligible. In contrary, adults were highly susceptible to fungus infection. Beauveria bassiana and Paecilomyces fumosoroseus caused 90 to 100% mortality and had a strong influence on fecundity. Metarhizium anisopliae also showed reliable effects. The pathogenicity of Paecilomyces farinosus was low. Higher conidia concentrations lead to higher mortality,...
Tipo: Journal paper Palavras-chave: Fruit and berries Crop health; Quality; Protection.
Ano: 2008 URL: http://orgprints.org/20264/1/D_2008_08KifliLaborIOBC.pdf
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Wirkung entomopathogener Pilze gegen die Kirschfruchtfliege Rhagoletis cerasi. Organic Eprints
Daniel, Claudia; Keller, Siegfried; Wyss, Eric.
Susceptibility of different life stages of Rhagoletis cerasi to entomopathogenic fungi. The effects of six fungus strains (Deuteromycotina: Hyphomycetes) on the mortality of different life stages of the European cherry fruit fly, Rhagoletis cerasi Loew (Diptera: Tephritidae), were assessed in a series of laboratory experiments. All fungus strains caused mycoses in larvae and adults of R. cerasi. Virulence however varied considerably between the strains. Effects on L3-larvae were negligible; none of the fungus strains caused mortalities of more than 25% of larvae. Adults by contrast were highly susceptible to fungal infection. Beauveria bassiana and Paecilomyces fumosoroseus caused 90 to 100% mortality and had a strong influence on fecundity. Metarhizium...
Tipo: Journal paper Palavras-chave: Crop husbandry Crop health; Quality; Protection.
Ano: 2008 URL: http://orgprints.org/20268/1/G_2008_01KifliLaborDgaae.pdf
Registros recuperados: 5
Primeira ... 1 ... Última
 

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