Larvanem Entomopathogenic nematodes Heterorhabditis bacteriophora

Use Larvanem for:

Larvae of various species of beetle such as the black vine weevil (Otiorhynchus sulcatus)


Each box contains nematodes (third stage) in gel

Standard Larvanem: 1 bag in a box
Each bag contains: 50 million nematodes

Large Larvanem: 2 bags in a box
Each bag contains: 250 million nematodes

General information

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When to use Larvanem?

Use Larvanem for biological pest control of the larvae of various species of beetles, such as the black vine weevil (Otiorhynchus sulcatus). 

How does Larvanem work?

After application, the nematodes actively search for their prey and penetrate them. The nematodes feed on the contents of the prey, excreting specific bacteria from their digestive tracts as they do so. These bacteria convert host tissue into products that the nematodes can easily ingest. The larvae die within a few  days.

How to use Larvanem

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Application Larvanem

  1. Half an hour before preparing the product, remove the pack from the refrigerator and let it come up to room temperature (20°C)
  2. Break the contents of the sachet (250 million Heterorhabditis bacteriophora) into smaller pieces
  3. Use the entire pack and place the smaller pieces in a bucket containing five liters of water (at 15 to 20°C)
  4. Leave the bucket with the solution to stand for five minutes
  5. Then stir the solution until all the lumps have disappeared before transferring it to the spray tank
  6. Use the spray solution straight away
  • With a watering- can, sprinkler system, backpack spray unit or vehicle-mounted spray unit
  • To avoid blockage, all filters should be removed
  • Use a maximum pressure of 12 bar on spraying boom or pistol
  • The spray nozzle opening should be at least 0.5 mm (500 microns)
  • Continuous mixing should take place to prevent nematodes sinking to the bottom of the spray tank
  • In case of pot application: 5000 nematodes per liter pot volume

Best working conditions Larvanem

  • The moisture content of the soil must be high
  • Soil temperature between 14 and 33°C
  • Nematodes are susceptible to ultraviolet light (UV): do not use them in direct sunlight
  • Leaf applications should only be carried out in the evening to minimise the influence of UV light and to maximize moisture availability for the nematodes


Biological beneficials have a very short life expectancy and therefore need to be introduced into the crop as soon as possible after receipt. Failure to do so can have a negative impact on their quality. In case you do need to store Larvanem, please follow the instructions below. Koppert B.V. is not liable for any loss of quality if the product is stored for longer than recommended and/or under incorrect conditions.

Storage instructions:

  • Shelf life: see package for expiry date
  • Storage temperature: 2-6 °C
  • Store in a dark place


The information given below is merely indicative. Tailored advice can be provided if information is available on the local factors that need to be taken into account, such as the crop, the climate conditions and the level of infestation. For the correct approach, please consult a Koppert specialist or a recognized distributor of Koppert products.

Larvanem preventive light curative heavy curative
Dosage n/a 500,000/m² 1,000,000/m²
m²/standard packaging n/a 100 50
m²/large packaging n/a 1000 500
interval (days) n/a 14 14
Frequency n/a 2x 2x

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