Pest Management Science (2016) 72, 246-254

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Jaka Razinger, Vasileios P. Vasileiadis, Marion Giraud, Wim van Dijk, Spela Modic, Maurizio Sattin and Gregor Urek (2016)
On-farm evaluation of inundative biological control of Ostrinia nubilalis (Lepidoptera: Crambidae) by Trichogramma brassicae (Hymenoptera: Trichogrammatidae) in three European maize-producing regions
Pest Management Science 72 (2), 246-254
Abstract:
BACKGROUND
A 2 year study was conducted to evaluate the efficacy of biological control with optimally timed Trichogramma brassicae releases as an integrated pest management tool against the European corn borer (ECB), Ostrinia nubilalis (Hübner), in on-farm experiments (i.e. real field conditions) in three European regions with dissimilar geoclimatic conditions and ECB pressure and conventional management (i.e. insecticide treated and untreated).
RESULTS
Biological control with Trichogramma (1) provided ECB protection comparable with conventional management, (2) in all cases maintained mycotoxin levels below the EU threshold for maize raw materials destined for food products, (3) was economically sustainable in southern France and northern Italy, but not in Slovenia where it resulted in a significant decrease in gross margin, mainly owing to the cost of Trichogramma product, and (4) enabled avoidance of detrimental environmental effects of lambda-cyhalothrin use in northern Italy.
CONCLUSION
Optimally timed mass release of T. brassicae could be considered a sustainable tool for IPM programmes against ECB in southern France and northern Italy. Better involvement of regional advisory services is needed for the successful dissemination and implementation of biological control. Subsidy schemes could also motivate farmers to adopt this IPM tool and compensate for high costs of Trichogramma product.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website


Database assignments for author(s): Jaka Razinger, Vasileios P. Vasileiadis, Gregor Urek

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
inundative/inoculative release


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.
Ostrinia nubilalis France
Ostrinia nubilalis Italy
Ostrinia nubilalis Slovenia
Trichogramma brassicae (parasitoid) Ostrinia nubilalis Maize/corn (Zea mays) France
Trichogramma brassicae (parasitoid) Ostrinia nubilalis Maize/corn (Zea mays) Italy
Trichogramma brassicae (parasitoid) Ostrinia nubilalis Maize/corn (Zea mays) Slovenia