Spread of Western Corn Rootworm

The WCR originates in the USA and was imported to Serbia in the early 1990s. Since then, it has rapidly spread to most of South East and Central Europe.

Currently, some 7 million hectares are affected in Europe. The main damage is caused by the larvae of WCR, which feed on the roots of corn. This leads to lodging of the plants and they cannot develop. Yield losses lie between 20 and 80 %, resulting in billions of damage without protection. The pest is distributing its eggs during the full flying period in summer. The eggs are overwintering and develop into the hazardous larvae in the following spring. As WCR is distributing its eggs even into cultures other than corn, simple crop rotation cannot fight the pest successfully and sustainably.