Use for
Pests
Potato psyllid (Bactericera cockerelli).
How it works
Mode of action
Adult female parasitic wasps parasitize nymphs of the fourth and fifth instar of psyllid. Additionaly, host feeding also occurs.
Appearance
- The eggs of the parasitoid are covered with a mucilaginous substance and are attached to the body wall of the psyllid nymph.
- The larvae are ecoparasitic and are located under the nymph of the host.
- Adults have a black body, pale wings, and yellowish jointed legs. Males measure between 0.4 and 0.6 mm in lenght, with elongated antennae with long, sparse hairs. Famales are 0.5-2.0mm long, with club-shaped antennae with numerous short hairs.
Visual effect
Parasitized nymphs of the psyllid become reddish-brown. Adult wasps leave the nymphs via a round hole.
Product specifications
| Pack size | 250 |
| Presentation | 140 ml bottle |
| Developmental stage | Adult |
| Carrier | None |
Directions for use
Application
- Use Tetrapar preventively or curatively with weekly releases.
- Distribute the wasps evenly over the entire surface of the crop, releasing the product every 20 m alternating between the rows or beds.
- Carry out the introduction of Tetrapar during the morning or in the late afternoon, to avoid high temperatures and radiation.
Dosage
The dosage of Tetrapar depends on climate, crop and psyllid density and should always be adjusted to the particular situation. Start introduction preventively soon after planting of the crop or curatively as soon as you see this pest in the crop. Releases should be repeated until control is achieved.
- Preventative Rate: 0.5/m2
- Mild Curative Rate: 1/m2
- Heavy Curative Rate: 10/m2
Consult a Koppert advisor or a recognized distributor of Koppert products for advice on the best strategy for your situation.
Environmental conditions
Tamarixia triozae wasps are most effective at temperatures between 20 and 24 °C and 70% humidity.
Side effects
Pesticides can have (in)direct effects on biological solutions. Find out which pesticides have side effects on this product.
Product handling
Storage time after receipt
Apply as soon as possible after receipt. If necessary, the product can be stored for 1-2 days.
Storage temperature
8-10°C/47-50°F.
Storage conditions
In the dark, bottle horizontal.
"The general conditions of Koppert (Koppert B.V. and/or of its affiliated companies) apply. Only use products that are permitted in your country/state and crop. Always comply with the conditions specified in local product registrations. Koppert cannot be held liable for unauthorized use. Koppert is not liable for any loss of quality if the product is stored for longer than recommended and/or under incorrect conditions."