Video about Western Corn Rootworm (Diabrotica virgifera virgifera)
Friday, 10.11.2017 Nematodes in use
The Western Corn Rootworm (Diabrotica virgifera virgifera) is an invasive corn pest. In the USA it causes a yearly damage of more than 1 billion US$. Since its introduction in 1992 in Serbia the Western Corn Rootworm invaded large parts of Middle and Eastern Europe.
Diabrotica virgifera v. is univoltine. Hibernation of the insect is in the egg stage. Larvae hatch in May and develop through three larval stages and the pupa to adults, which emerge between late June and early August.
Our control agent, the product dianem® is based on the entomopathogenic nematode Heterorhabditis bacteriophora. Dauer juveniles of these nematodes actively search for Diabrotica larvae and pupae in the soil. Three days after invasion the insects die. Dead insect turn orange-red. The nematodes propagate inside the insect cadaver. After 2 weeks thousands of new nematode dauer juveniles emerge and hunt for the surviving Diabrotica larva and pupae.
Biological control of Western Corn Rootworm with entomopathogenic nematodes: