Lutter naturellement contre les otiorhynques

The vine weevil is a pest insect from the weevil family that attacks foliage. This pest is easily identified by the lacy indentations it leaves on the edges of the leaves. Hubert Fontaine explains how to use biological control against this insect, including dosage, preparation of the nematode solution, and spraying. From dosing and preparation of the nematode solution to spraying, he explains how to use biological control against this insect. #vineweevil #pest #biologicalcontrol #insect #nematode The vine weevil can cause significant damage to azaleas, rhododendrons, hydrangeas, and more. Biological Control of the Vine Weevil To control this insect pest, there is a nematode, a microscopic worm that parasitizes the insect's larvae. This endoparasite, the HB nematode (Heterorhabditis bacteriophora), is supplied in powder form to be diluted in water. How to prepare the nematode solution 1. Before treating your plants, weed the base of the infected plants. 2. Rake the surface of the soil to promote good nematode dispersal. 3. Take a watering can and fill it with water. 4. Prepare the solution at a rate of 5 ml per 10 liters of water. In this case, use half the sachet for a 5L watering can. 5. Mix well to ensure good, even nematode dispersal. 6. Water with a sprayer at the base of the infected plants. 7. Allow 10 liters per 10m² (use a rule of three for your area). How the nematode affects weevil larvae Once on the ground, the nematodes go in search of their prey. The parasitic worm enters the vine weevil larva, perforates the intestine, and releases a bacterium that causes the larva to die within 48 hours. 0:00 Biological control of vine weevil moths 0:16 Recognizing a vine weevil attack 0:33 Biological control of vine weevil moths, nematodes 1:02 Preparing the nematode solution 1:40 How the nematode affects vine weevil larvae 2:06 Conclusion