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Field applications of entomopathogenic fungi against Rhagoletis cerasi

Daniel, Claudia; Keller, Siegfried and Wyss, Eric (2008) Field applications of entomopathogenic fungi against Rhagoletis cerasi. IOBC wprs Bulletin, 31, pp. 191-194.

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Summary

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 seven days after application, while the fungal propagules of P. fumosoroseus remained only three days. A control of R. cerasi with myco-insecticides seems possible under field conditions. However, application regime still has to be improved.


EPrint Type:Journal paper
Keywords:Rhagoletis cerasi, Beauveria bassiana, Paecilomyces fumosoroseus.
Subjects: Crop husbandry
Crop husbandry > Crop health, quality, protection
Research affiliation: Switzerland > Agroscope > ART - Reckenholz location
Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Plant Protection and Biodiversity
Deposited By: Winter, Carmen
ID Code:20265
Deposited On:10 Feb 2012 10:39
Last Modified:10 Feb 2012 10:39
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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