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Integrated pest management (IPM) system was used in Palm House of Poznań during 2001. The monitoring system using sticky traps, application of selective pesticides and introduction of natural enemies against four of the most important pests were reported.
Strict regulations limiting the availability of synthetic pesticides on vegetable crops in greenhouses have created a new challenge for plant protection. Many pests such as whiteflies, thrips aphids, spider mites, and other, still remain dangerous and difficult to control on vegetable crops in greenhouses. In the experience of many and in a review of world literature, it has been noted that effective methods of biological control of many pests are already available, or can be easily adapted for practice. According to the Polish Directives, biological methods should be used prior to any application of chemical products. Thus, biological control is a priority in plant protection, especially for vegetable crops in greenhouses. Tetranychus urticae is the most important pest in greenhouse crops. Successful control of this pest is very difficult. In laboratory studies the predator mites Amblyseius swirskii and Phytoseiulus persimilis showed a high efficacy when used together to control of two-spotted spider mites (86% mortality). When predators were used separately they were less effective against the pest (about 63% mortality). The studies showed that A. swirskii was competitive with P. persimilis populations for controlling the two-spotted spider mite. Other predators mites: Amblyseius degenerans and Amblyseius californicus used in the experiments demonstrated neutral interaction.
The aim of presented studies was to determine the toxicity of some pesticides to predatory bugs Orius laevigatus and Macrolophus caliginosus. The results of performed studies revealed that the tested predatory bugs were sensitive to insecticide Kohinor 200 SL (imidacliprid) and fungicide Falcon 460 EC (spiroksamina, tebukonazol, triadimenol) in laboratory tests. The pesticides Abarex 018 EC (abamectyna) and Blotch 500 SC (chlorotalonil) showed to be selective for O. laevigatus and M. caliginosus. These pesticides might incorporated into IPM (Integrated Pest Management) programmmes of greenhouse crops.
Frankliniella occidentalis is the most important pest in greenhouse crops. Successful control of this pest is very difficult. In laboratory and greenhouses studies predator mites Amblyseius swirskii and Amblyseius cucumeris showed a high efficacy used together in control of western flower thrips (83% mortality). Predators used separately were less efficacious against the pest (about 63% mortality). The studies showed neutral interaction of A. swirskii and A. cucumeris populations in control of western flower thrips.
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