9376: Wie lässt sich Drahtwurmfraß an Kartoffeln im Ökologischen Landbau reduzieren? [How to reduce wireworm damage in ecological potato farming?]

Schepl, Ute and Paffrath, Andreas (2007) Wie lässt sich Drahtwurmfraß an Kartoffeln im Ökologischen Landbau reduzieren? [How to reduce wireworm damage in ecological potato farming?]. Paper presented at Zwischen Tradition und Globalisierung - 9. Wissenschaftstagung Ökologischer Landbau, Universität Hohenheim, Stuttgart, Deutschland, 20.-23.03.2007.

Summary

Wireworms are very important animal pests in ecological farming. Some strategies were tested to regulate wireworm damage in potato farming. Forecrops such as an-nual legumes reduce the damage by wireworms under 10%. Catch crops such as Trifolium resupinatum have a positive impact on the quality of food potatoes. Under-sown crops after the last ridging had no reducing effects. Some potato varieties are more susceptible for wireworm damage. The cultivar ‛Nicola’ had the lowest wireworm damage with about 13%. Wireworm damage arised linear with later harvest dates. Pheromone traps are a good method for controlling beetles flight. Metarhizium ani-sopliae was tested as a biological control agent for wireworms. There was no effect on the wireworms’ population.

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