PHEROMONES AGAINST THE LEEK WORM
Treatment against the butterfly responsible for the leek worm. After spending the winter buried in plant debris, the adult butterfly resumes its activity in March/April. After mating, the female butterflies lay their eggs in the middle of the inflorescence or on the leaves of the leek (or onion). The worm is born after 5 days. For a few days, it mines the leaves to feed and develop, then burrows inside the leek, causing damage. The first generation of larvae, resulting from the laying of eggs by overwintering adults, is not very active and causes little damage. The larvae from the summer generations (July/August) are much more destructive. Dosage / surface area: 1 to 2 trap(s) + pheromone(s) per square of leeks. The pheromone sachets should be kept cold (refrigerator or freezer). This product contains 2 pheromone capsules. Sold without the trap. These pheromones are used with the small house trap ref 1206C Shipping to mainland France only. How do pheromones work? Pheromones are volatile substances secreted by living beings (animals, insects, certain plants, etc.). In insects, the pheromone is generally emitted by the female to play a sexual attraction on the male who can detect it several kilometers away. Each insect pest corresponds to a specific pheromone. The principle of the treatment is to attract the male insect by imitating the pheromone of its female to trap it and thus avoid mating and reproduction. 1. the capsule imitating the female pheromone is placed in a trap to attract the male 2. the male detects the pheromone, he thinks he is joining the female 3. the male enters the trap, he is captured, production is stopped. How to set up pheromones? The pheromone is used with a trap. Setting up the trap + pheromone from April. The pheromone capsule is used as soon as the bag is opened. It must be placed in the small capsule holder basket of the pheromone trap. The trap + pheromone assembly must be placed near the vegetables to be protected. Treatment period: from April to October.
