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Aphidius-System

Efficient parasitic wasp, Aphidius colemani is fundamental to control of small aphid species – can detect pest colonies at low pest density.  

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Aphidius-System - fundamental to control of small aphids

How does Aphidius-System control aphids?

  • SpecialisedAphidius colemani is the most widely used parasitic wasp for controlling small aphid species.
  • Excellent searching ability – detects developing aphid hotspots even at low pest densities, allowing early intervention.
  • Effective control – female wasps lay their eggs inside both aphid nymphs and adults. The larvae develop inside the host, eventually killing it.
  • Rapid population build-up – a single female can lay up to 300 eggs, enabling the wasps to establish and spread quickly throughout the crop.
  • Additional control effect – the presence of parasitic wasps can trigger a panic response, causing aphids to drop from the plant.

When should you introduce Aphidius-System?

  • Start preventatively – introduce Aphidius-System before aphid populations begin to build up.
  • Increase the dosage when aphids appear – adjust the release rate according to pest density.
  • Combine for curative control – for existing infestations, a combination with Aphidoletes-System is recommended. More severe infestations can also be tackled with Adalia-System.
  • Suitable for banker plants – Aphidius-System can also be used preventatively in combination with banker plants.

How do you release Aphidius-System?

  • Mix gently – carefully rotate the bottle horizontally to ensure an even distribution of the mummies.
  • Apply throughout the crop – sprinkle the contents onto horizontal leaves or use Bio-Boxes suspended in the crop.
  • Keep off the soil – never place the mummies directly onto the soil or growing substrate.
  • Leave undisturbed – ensure the material remains dry and is not moved from its release site for at least a few days.

Under which conditions should you use Aphidius-System?

  • Active between 15°C and 32°C (59-89°F)Aphidius colemani performs best within this temperature range.
  • Avoid high aphid densities – excessive honeydew production can reduce the mobility of the parasitic wasps and limit their effectiveness.
  • Watch for hyperparasitoids – during warmer periods, hyperparasitoids can significantly reduce the efficacy of Aphidius colemani.

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