For the control of greenhouse whitefly and tobacco whitefly
3,000; 15,000 pupae.
Cardboard strips with 5 cards each, wrapped in plastic, in a cardboard box, each card holds 60 parasitized whitefly pupae.
For optimal efficacy the 24 hour average greenhouse temperature needs to be at least 20°C/68°F. Eretmocerus eremicus is still active at temperatures above 30°C/86°F.
When to use Ercal?
For the control of Greenhouse whitefly (Trialeurodes vaporariorum); Tobacco whitefly (Bemisia tabaci).
How does Ercal work?
Mode of Action
Adult female parasitic wasps parasitize the second and third larval stage of the whitefly. Additionally, host feeding also occurs.
Parasitized whitefly pupae turn yellow, the adult parasitic wasp can be seen clearly within the parasitized whitefly pupae shortly before it emerges.
Open package carefully inside the greenhouse
Bend and tear off the strips opposite to the mounting hole
Make sure not to touch the pupae during handling
Suspend the cards in the crop, if possible approximately 75 cm under the plant head
Avoid to hang cards at places exposed to direct sunlight
Storage time after receipt
In the dark.
The dosage of Ercal depends on climate, crop and whitefly density and should always be adjusted to the particular situation. Start introduction preventively soon after planting of the crop. Introduction rates typically range from 1-10 per m2/release. Releases should be repeated at least 3 times at weekly intervals or until control is achieved. Depending on the specific situation, it may be better to switch to the use of En-strip or Enermix. Consult a Koppert advisor or a recognized distributor of Koppert products for advice on the best strategy for your situation.