Chrysopalarvae are specific predators of aphids, and are effective in control of most aphid-species. For control of aphidspecies that easily falls from the plant when disturbed, it is recommended to use Harmonia or other aphid predators or parasites.

Article Article-number Quantity Price Crysopa ssp 0070 500

Chrysopa ssp.

The larvae are about 2-3 mm in length when they arrive to the customer in the carton. These larvae are in 1.st and 2.nd larvaestage. The fully-grown larvae (stage 4) are up to 1 cm. in length, and will under normal conditions eat several hundred aphids. The colour is grey-red. The larvae are very mobile, and will easily walk from one plant to the other, as long as there are contact between plants. The adult chrysopa has characteristic gold-eye and are green of colour. The wingspan is about 25 mm. Eggs are layed on stalks and are white-green of colour.

How to use
The carton with larvae are careful opened above the crop with the aphids, and released by knocking gently on the case. Leave the case in the crop as some larvae will still come out afterwards. Chrysopa in buckwheat can be actively blown/spread in the crop by a machine, or just by hand. 500 Chrysopalarvae (one case) can cover up to 100 m2, e.g. 5 larvae/m2. By severe attack of aphids, use 10-25 larvae/m2. The treatment should be repeated until aphids are controlled. Adult Chrysopa will not breed, so no long-term effect is to be expected. So the effect will only be as long as larvae are found or released in the culture. Optimal conditions for the chrysopa-larvae are 22-25 degrees Celsius. Critical temperature: below 10 degrees Celsius (no activity) and above 35 degrees Celsius. It is recommended to use Chrysopalarvae for control of Myzus-species and cottonaphid. Macrosiphum-species are not easy control with Chrysopa.

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