Entomopathogenic nematodes provide natural control of both cranefly larvae (leatherjackets) and chafer grubs. Sportnem H contains the species Hetororhabiditis bacteriophora which can be used for controlling chafer grubs. Applied as a drench the nematodes move through the moist soil to find Chafer Grub larvae. The addition of Nemaflo® improves movement of the nematodes into the soil so that they can get to work quickly and efficiently.
Good timing of application is crucial for effective use of nematodes. It is important to time applications to target the larva or grubs when they are still small and when soil temperatures are warm enough for nematode activity. Once a nematode has found and penetrated a pest larva through a body opening, it begins its’ destructive work. The nematode then releases symbiotic bacteria which spread throughout the larvae, multiplying rapidly while feeding on the host tissue and converting it into a form easily taken up by the nematodes. The infected larvae dies within a few days, but the nematodes continue to multiply and develop in the host. As soon as the nematodes are in the infectious third stage, they leave the host and start searching for new targets. The nematode population will slowly decrease once there are no new hosts present.
Application timing
- Best results are achieved when applications are timed to coincide with when the majority of larvae have hatched
- This is usually around 4-5 weeks after peak adult flying time
- For chafers, treatments are usually made between August-October
Application guidelines
Apply to turf using around 800-1000 l of water per ha. Use of an adjuvant such as Nemaflo can improve movement into the rootzone where the pest species are located.
Applying both Sportnem H and Sportnem T if both pests are present
Just mix together and apply using around 800-100l of water per ha.
Storage guidelines
- Immediately upon arrival, open and store the individual packs in the fridge until ready to use
- Refrigerating nematodes between 2-6°C in the dark improves shelf-life but it is recommended to use the product within 2-4 weeks after delivery