Pheromones against potato and salad wireworms (wireworms) - 58020-

Treatment against the beetle (Actenicerus siaelandicus), responsible for the worm of potatoes, lettuce, and transplanted crops. Adults spend the winter hidden in the soil. In spring, the beetles lay eggs in the soil, where the larvae hatch after 2 to 4 weeks. The development cycle of the worm is very long, from 1 to 5 years depending on the species: 1 year for Sordidus, 3 to 5 years for Sputator, Lineatus, and Obscurus. During this entire time, the worm remains hidden in the soil, where it moves in search of food. It can therefore be found in different sizes (from 2 to 25 mm), corresponding to different stages of development. In the final year, the worm transforms into a nymph in a crevice in the soil. The adult beetle emerges a month later but only emerges from the ground the following spring.

The principle is to use the female's specific pheromones to attract the male, trapping him and preventing mating and egg-laying, where the larvae (worms) will hatch.