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  Wireworm damage in potato production substantially increased within the last years, both in conventional and organic production systems. Farmers often face existence-threatening yield losses due to wireworms. Currently effective plant protection strategies are not available or only based on clause 53 of the European Commission. In previous projects we developed an innovative and effective control strategy based on biological components. A capsule releases carbon dioxide (CO2) upon contact with the soil humidity. Wireworms are attracted to the CO2 source and come into contact with the “kill” component of this strategy, an isolate of the entomopathogenic fungus Metarhizium brunneum. This results in a substantially enhanced frequency of fungal infections and mortality of wireworms. The ATTRACAP project aims at improving the so far developed product ATTRACAP® with regard to reliability and efficacy levels. As an outcome of the project an optimized product ATTRACAP® will be available helping both conventional and organic farmers to maintain a sustainable potato production. The project is supported by funds of the Federal Ministry of Food and Agriculture (BMEL) based on a decision of the Parliament of the Federal Republic of Germany via the Federal Office for Agriculture and Food (BLE) under the innovation support programme.