Journal of Applied Entomology - Zeitschrift für angewandte Entomologie (1995) 119, 83-87

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G. Burgio and S. Maini (1995)
Control of European corn borer in sweet corn by Trichogramma brassicae Bezd. (Hym., Trichogrammatidae)
Journal of Applied Entomology - Zeitschrift für angewandte Entomologie 119 (1), 83-87
Abstract: The biological control effectiveness of the indigenous egg parasitoid Trichogramma brassicae Bezd., reared continuously on Ostrinia nubilalis (Hb.) (ECB) eggs, was tested against ECB in sweet corn in 1991 (2 ha release plot) and 1992 (3.5 ha release plot). T. brassicae was reared for three-four generations on the factidious host Ephestia kuehniella Zell. and then released on the crop; a 0.5 ha plot situated at 300-400m from the test plots was used as control in both years. Four releases, each totalling 250-300 000 individuals, were made the first year and three at the same rate per ha the second. ECB adult emergence was monitored using traps baited with sex pheromone and phenylacetaldehyde food attractant. The parasitoid activity was monitored via sentinel egg masses following each release. The parasitization rates of the sentinel egg masses was always higher in the release plot vs. control. The parasitization of natural egg masses sampled in both years before harvest was: 12.5 and 10.86% in control as against 87.5 and 68.58% in T. brassicae plots in the respective years. ECB damage was calculated on crop ear samples. The rate (%) of sentinel egg mass predation by wild predators showed no significant difference between control and release plots for both years. The low level of ECB damage to crop ears evinced the good search capacity, parasitization and control effectiveness of T. brassicae.
(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): Stefano Maini, Giovanni Burgio

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 Maize/corn (Zea mays) Italy
Trichogramma brassicae (parasitoid) Ostrinia nubilalis Maize/corn (Zea mays) Italy
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