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Journal of Central European Agriculture, Vol. 21 No. 3, 2020.

Original scientific paper

https://doi.org/10.5513/JCEA01/21.3.2376

Efficacy of the EPNs (Heterorhabditis bacteriophora Poinar, 1976) on sugar beet larvae (Bothynoderes punctiventris Germar 1824; Coleoptera: Curculionidae) in field conditions

Zrinka DRMIĆ orcid id orcid.org/0000-0002-1631-9628 ; University of Zagreb, Faculty of Agriculture, Department of Agricultural Zoology, Svetošimunska 25, 10000 Zagreb, Croatia
Renata BAŽOK ; University of Zagreb, Faculty of Agriculture, Department of Agricultural Zoology, Svetošimunska 25, 10000 Zagreb, Croatia
Mihaela ŠATVAR ; University of Zagreb, Faculty of Agriculture, Department of Agricultural Zoology, Svetošimunska 25, 10000 Zagreb, Croatia
Helena VIRIĆ GAŠPARIĆ ; University of Zagreb, Faculty of Agriculture, Department of Agricultural Zoology, Svetošimunska 25, 10000 Zagreb, Croatia
Darija LEMIĆ ; University of Zagreb, Faculty of Agriculture, Department of Agricultural Zoology, Svetošimunska 25, 10000 Zagreb, Croatia
Dinka GRUBIŠIĆ ; University of Zagreb, Faculty of Agriculture, Department of Agricultural Zoology, Svetošimunska 25, 10000 Zagreb, Croatia
Maja ČAČIJA ; University of Zagreb, Faculty of Agriculture, Department of Agricultural Zoology, Svetošimunska 25, 10000 Zagreb, Croatia

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Abstract

The effectiveness of entomopathogenic nematode (EPN) Heterorhabditis bacteriophora Poinar, 1976 (Nematoda: Heterorhabditidae) infective juveniles (IJs) on sugar beet weevil (Bothynoderes punctiventris Germar, 1824 (Coleoptera: Curculionidae)) larvae was investigated during two-year (2014-2015). The field study was conducted to assess EPNs potential for use in practice. In field experiments, three doses of nematodes were used and an untreated control. In the conditions of moderate larval attack (average infestation of 0.28 larvae per plant), EPNs showed clear dose response being highly effective (92.86% control) when applied in the highest dose. Although the results indicated that H. bacteriophora could have a satisfactory mortality effect on sugar beet weevil larvae, further investigations are needed in order to better
determine the optimal dose and application timing. If effective, EPNs could be used as one of the tools in a strategy which aims to reduce sugar beet weevil population levels in a wider area.

Keywords

biological control; sugar beet weevil; entomopathogenic nematodes; Heterorhabditidae

Hrčak ID:

244314

URI

https://hrcak.srce.hr/244314

Publication date:

29.9.2020.

Article data in other languages: croatian

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