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Nemasys H [250 million]

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Nemasys H [250 million]

Item no. 210105097
On working days your request will be handled within 24 hours by the responsible account manager for your region. Royal Brinkman does not deliver to consumers or companies outside horticulture.
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NEMAcontrol H to control weevil vine weevil (Otiorhynchus sulcatus), other weevil species such as Otiorhynchus armadillo and Otiorchynchus salicola and the grubs of the rose and cockchafer.

Heterorhabditis bacteriophora
NEMAcontrol H is a biological product and contains the insect parasitic nematodes Heterorhabditis bacteriophora. After administration, the nematodes actively search for and penetrate the prey, after which they excrete bacteria, killing the prey. NEMAcontrol H is completely safe for humans, the environment, the crop and beneficial insects. The nematodes are active at a soil temperature between 12 and 30°C.

Product characteristics

  • Combats the weevil Taxus and other weevil species.
  • Safe for humans, environment, crops and beneficial insects.
  • Kills prey by secretion of bacteria.
  • Apply in humid conditions.

The packaging consists of trays of 50 million and 250 million insect parasitic nematodes.

Instructions for use
Recommended nematode dosage:

Infestation Application   Quantity of water  Type of application  Dosage  Tray 50 Million Tray 250 Million  Frequency


Yew beetle (larvae), weevil species (larvae)

   4 Liter/m2 Curative 500.000 m2 100 m2  500 m2  1x
Soil   4 Liter/m2 Curative  1.000.000/m2

 50 m2

  25 m2



Preparation of spray liquid

  • Empty the contents of a tray into a bucket with 10l water and stir the solution well.
  • Use the entire tray at once.
  • Fill the spray vessel or spray tank for three quarters with water and add the nematode solution.
  • Fill the spray vessel / spray tank with the required amount of water.
  • Apply the nematode solution immediately after mixing.


  • The application can be carried out with the usual spraying equipment.
  • Remove all filters smaller than 0.3 mm (300 microns).
  • The pump pressure must not exceed 20 bar/2000 kPa.
  • During application, continuously stir the spray fluid to prevent settling of the nematodes.
  • Use a nozzle of 0.5 mm (500 microns) or larger.
  • The spray liquid cannot be stored.


  • Ensure moist conditions during application.
  • Do not apply in sunny weather.
  • Soil temperature between 12 - 30°C.
  • When applied over the leaf, immediately afterrose with water to rinse the nematodes to the top layer. 
  • Make sure that the soil remains moist for a few days after application.
  • When using foliar application, make sure that there is sufficient foliar cover, but avoid dripping.
  • Eels can be applied together with various crop protection agents; for more information on tank mixes, consult your product specialist.

Receipt and storage
Upon receipt, check the product for abnormalities and report any complaints or comments within 24 hours. Preferably use the product immediately. If storage is required, the product should be stored in the dark at a temperature of 5-7°C. Remove the (overbox) packaging and ensure good air circulation around the trays. See packaging for expiry date. When the product is stored longer and/or under different conditions Royal Brinkman is not liable for loss of quality.

This product will not necessarily be approved or authorized in your country.
Please check with the appropriate authority in your country as to whether you may legally use this product.
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