Optimization of Neoseiulus cucumeris (Oudemans) releases against thrips, Frankliniella occidentalis (Pergande), in rose greenhouses

Description

The predatory mite Neoseiulus cucumeris is an efficient beneficial against thrips. This study aims to develop a preventive control method against the thrips Frankliniella occidentalis in integrated production of roses in greenhouse. At the same time, the assumption of obtaining a better efficiency by increasing the frequency of releases and by decreasing the amount in every release was to check. Three treatments were carried out in this trial in compartments: a control treatment, without releases (1), introductions of N. cucumeris every 4 weeks with the amount of 1 sachet per m2 (2) and introductions every week with the amount of 1/4 sachet per m2 (3). The study showed that for the same number of N. cucumeris released, a better efficiency is obtained with more frequent releases and reduced amounts in every release.

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