Nachrichtenblatt des Deutschen Pflanzenschutzdienstes (2007) 59, 133-137

Christoph Hoffmann (2007)
Simulation der Eiablage als Werkzeug zur Freilandprüfung von Insektiziden im Weinbau and zur Erforschung der Autökologie des Bekreuzten Traubenwicklers Lobesia botrana DEN. und SCHIFF. (Lepidoptera: Tortricidae)
[Simulation of Lobesia-botrana-egg-laying in the field to assay the efficacy of insecticides in grapevines, and to study the autecology of the Grapevine Moth (Lepidoptera: Tortricidae: Lobesia botrana DEN. and SCHIFF.)]
Nachrichtenblatt des Deutschen Pflanzenschutzdienstes 59 (6), 133-137
Abstract: The rearing facilities of Lobesia botrana were modified in a way that moths layed their eggs on polyethylene sticks which were used for repeated and continuous artificial egg infestations of grapes in vineyards. In the context of a randomized insecticide field trial in a Riesling vineyard in the german vinegrowing region Mosel, infestations were carried out up to three times a week during the vegetation period. Thus a constant egglaying of the Grapevine Moth was simulated. The infestation level varied cosiderably within the season. During a dry-hot period between June and July of 2006 we found the highest levels of successful infestations. The development of Lobesia botrana was not effective during the coolhumid periods before and after June and July. In this way survival of Lobesia botrana in the field underlies a high coincidence factor. For one insecticide the effective period was surprisingly long. Three insecticides showed different efficacy between the period of the first and the second generation of the Lobesia botrana field population. Apparently the reason for this is the changing architecture of the clusters during the season, as the second insecticide treatment was conducted after grape closure.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: German)
Database assignments for author(s): Christoph Hoffmann

Research topic(s) for pests/diseases/weeds:
rearing/culturing/mass production
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Lobesia botrana	Grapevine (Vitis)	Germany