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Provedor de dados:  21
País:  Germany
Título:  Basic results in biological control of the European Cherry Fruit Fly Rhagoletis cerasi L. (Diptera: Tephritidae) with entomopathogenic nematodes
Autores:  Köppler, Kirsten
Peters, Arne
Vogt, Heidrun
Data:  2004
Ano:  2004
Palavras-chave:  Crop health
Protection Fruit and berries
Resumo:  In 2002 and 2003, within the ‚Bundesprogramm Ökologischer Landbau’, initial experiments to control the European cherry fruit fly Rhagoletis cerasi were carried out under laboratory, semi-field and field conditions with several entomopathogenic nematode species and strains. In the laboratory the efficacy of nematodes against R. cerasi larvae, pupae and adults was examined. To characterize the controlling potential, different nematode dosages, exposure temperatures and substrates were tested in cell wells, petri dishes and plastic boxes. In the semi-field experiments plastic fruit boxes, filled with soil, were used. In the field tests R. cerasi-larvae and nematodes were released in defined areas in a cherry orchard of the institute. For evaluation of the experiments, the infestation rates and efficiencies (ABBOTT) were determined. Steinernema carpocapsae and S. feltiae achieved the highest efficacies. In laboratory, infestation rates in cell wells up to 91 % and efficencies up to 96 %, in petri dishes up to 96 %, respectively 98 %, and in plastic boxes 88 %, respectively 89 %, were attained. The experimental substrates like quartz sand or soil type and the tested temperatures did not result in consistent significant differences in laboratoy tests. A dosage below 25 nematodes per cm2 resulted in insufficient infestation rates. In the semi-field experiments a maximum infestation rate of 86 % (efficiency 78 %) and in a first field test an efficiency of 88 % was obtained. R. cerasipupae were not infested. These results indicate a high controlling potential of entomopathogenic nematodes against R cerasi, especially of the steinernematid species S. carpocapsae and S. feltiae. Further experiments under realistic conditions in the field are forcibly necessary before putting this control method into practice.
Tipo:  Conference paper, poster, etc.
Idioma:  deu

Köppler, Kirsten; Peters, Arne and Vogt, Heidrun (2004) Basic results in biological control of the European Cherry Fruit Fly Rhagoletis cerasi L. (Diptera: Tephritidae) with entomopathogenic nematodes. [Erste Ergebnisse zur biologischen Bekämpfung der Kirschfruchtfliege Rhagoletis cerasi (Diptera: Tephritidae) mit entomopathogenen Nematoden.] In: Boos, Markus (Ed.) Ecofruit - 11th International Conference on Cultivation Technique and Phytopathological Problems in Organic Fruit-Growing: Proceedings to the Conference from 3rd February to 5th February 2004 at Weinsberg/Germany, pp. 48-54.
Formato:  application/pdf

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