Spanish Journal of Agricultural Research (2013) 11, 1112-1119
L. Batalla-Carrera, A. Morton and F. García-del-Pino (2013)
Field efficacy against the hazelnut weevil, Curculio nucum and short-term persistence of entomopathogenic nematodes
Spanish Journal of Agricultural Research 11 (4), 1112-1119
Abstract: The hazelnut weevil, Curculio nucum L. (Coleoptera: Curculionidae) is a pest affecting hazelnut orchards in Europe, with an important economical repercussion. Its potential control, short-term field persistence and the vertical distribution of native entomopathogenic nematode strains were tested in Muntanyes de Prades, Tarragona (NE Iberian Peninsula) over two consecutive years. Steinernema feltiae strain D114, Steinernema sp. strain D122 and Heterorhabditis bacteriophora strain DG46 were used in summer and spring applications at a dosage of 5·105 IJs m-2. The three nematode species reduced the hazelnut weevil population, ranging from 32% to 88% efficacy, without significant differences in efficacy or between the two applications. Persistence evaluation was carried out during 9 weeks for S. feltiae (D114), Steinernema sp. (D122) and H. bacteriophora (DG46) and showed all species capable of lasting for this period. Nematodes and larval vertical distribution was assessed. Most of the hazelnut weevil stayed within the first 25 cm although some were found as deep as 40 cm. Entomopathogenic nematodes were found along all 40 cm depth. This study proves the suitability of entomopathogenic nematodes to control the hazelnut weevil. (Full text free for older issues.)
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Link to article at publishers website
Database assignments for author(s): Ana Morton
Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
evaluation - screening - selection
Pest and/or beneficial records:
Beneficial | Pest/Disease/Weed | Crop/Product | Country | Quarant.
|
---|---|---|---|---|
Curculio nucum | Hazelnut (Corylus) | Spain (continental) | ||
Steinernema feltiae/Xenorhabdus bovienii (entomopathogen) | Curculio nucum | Hazelnut (Corylus) | ||
Heterorhabditis bacteriophora/Photorhabdus (entomopathogen) | Curculio nucum | Hazelnut (Corylus) | Spain (continental) |