Agricultural Solutions UK



Nemasys® H


Nemasys® H is based on the beneficial nematode Heterorhabditis bacteriophora (82%) and an intert carrier with water (18%). It provides control of black vine weevil (otiorhynchus sulcatus) present in soil or container-grown crops.


  • Fast and effective natural control.
  • The most robust and efficacious nematode product on the market for vine weevil control.
  • Control achieved at all times when the pest larvae are active.
  • No pest resistance problems.
  • Gives high levels of control between 12°C - 30°C.

Product Profile

Active ingredientsNematodes: species Heterorhabditis bacteriophora (82%)
VolumeVaries on pot volume (please see label)
DoseVaries on volume (please see label)
Target pestsBlack vine weevil (Otiorhynchus sulcatus)
Soil temperatureBetween 12oC and 30oC
Application windowWhen black vine weevil larvae are present
Application advice
  • Soil or media temperatures should be between 12°C and
    30°C for at least two weeks after application.
  • The soil or media should be moist.
  • Routinely treat new material coming onto the nursery that
    may contain black vine weevil larvae.
  • If product is applied over foliage, irrigate immediately with
    water to wash the nematodes into the soil.
  • Drench application: preferred method, especially where crop canopy is dense.
  • Strawberry application: drench each plant individually,
    direct application around the base of each plant avoiding run off.
  • Agitate nematodes constantly during application
  • Do not use product if past expiry date or incorrectly stored.
  • For information relating to which chemicals are compatible with Nemasys® H ask your distributor.

Vine weevil plant damage

Black vine weevil has been found to be able to feed on over 140 different plant species. Plant damage can be caused in a number of ways, including adults feeding on leaves (notching of leaf margins) and larvae feeding on the roots, which limits growth and can cause plant death.

Technical Services Hotline: 0845 602 2553

Technical Services Hotline: 0845 602 2553

Nemaslug® Biological Slug Killer

Nemaslug® Biological Slug Killer

Nemaslug® controls all common species of small to medium sized slugs. Start your control early and you will be able to target the young slugs growing under the ground before they do any damage.

Discover Nemaslug®