Determination of beneficial insect population
- Manual sampling (beating samples of trees, visual observation of shoots; adults and larvae of ladybugs and lacewings, larvae of hoverflies, spiders)
- Brushing of leaves (predatory mites)
- Observation of shoots during aphid infestation (adult and larvae of ladybugs and lacewings, larvae of hoverflies)
| Ladybugs (Coccinellidae ) | |
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| Adult seven-spotted ladybug (Coccinella septem-punctata) (© B. Pfeifer, JKI Dossenheim) | The larvae of the Asian ladybug (Harmonia axyridis) (© B. Pfeifer, JKI Dossenheim) |
Lacewings (Chrysoperla carnea ) | |
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| Egg of lacewing (Chrysoperla carnea ) (© B. Boehnke, JKI Dossenheim) | Lacewing larva on scale insect on blueberry (© C. Augel, LTZ Augustenberg) |
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| Adult lacewing (Chrysoperla carnea) (© J. Just, JKI Dossenheim) | Larvae of lacewing (Chrysoperla carnea) (© Photo archive, JKI Dossenheim) |
Hoverflies (Syrphidae ) | |
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| Adult hoverfly (Episyrphus balteatus) on blue lower (© Photo archive, JKI Dossenheim) | Larva of hoverfly (Episyrphus balteatus) on aphids (© Photo archive, JKI Dossenheim) |
Spiders (e.g.) | |
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| Theridiid spider Theridion impressum (© Photo archive, JKI Dossenheim) | Yellow green spider on cherry leaf (© C. Augel, LTZ Augustenberg) |
Predatory mites | |
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| The pest species European red spider mite (1; Panonychus ulmi ) and the predatory mite (2; Typhlodromus pyri ) (© J. Just, JKI Dossenheim) | Use of predatory mites in raspberries (S. Weißbrodt, BLE) |
Further beneficial insects | |
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| Ichneumon fly on blackberry (© C. Augel, LTZ Augustenberg) |
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