BASF Agricultural Solutions UK

Nemasys G


Nemasys® G has activity on the larval stages of the garden chafer (Phyllopertha horticola).


Advantages of using Nemasys® G:

• Microscopic organisms occurring naturally in the soil

• Nematodes attack insect pests by entering natural body openings

• Reproduces inside the dead pest

• Safe to crops, users and the environment

• Nematodes can survive up to 6 weeks in the soil

Why Nemasys® G?

Nemasys® G is a biological insecticide containing nematodes of the species Heterohabditis bacteriophera. Nemasys® G can be used in organic systems or as part of an IPM programme to reduce residues.

Nematodes attack the chafer grub by entering natural body openings, releasing a bacteria which quickly and safely kills it. The nematodes then reproduce inside the dead grub and release a new generation of hungry nematodes, which disperse and search for further prey. Insect pests stop feeding and die as the nematodes spread throughout their body.

Active ingredient(s)Nematodes: species Heterohabditis bacteriophora
Pack size50 million or 250 million
Pest activityLarvae of the garden chafer (Phyllopertha horticola)
Rate of application500,000 per m2
Application area treated100 m2 (50 million pack size) or 500 m2 (250 million pack size)
Volume0.1 L/m2 depending on pest
Soil temperatureBetween 12°C and 30°C
Application MethodSoil drench (via boom sprayer, knapsack, lance or sprinklers)
Application advice
Apply when the soil under the turf is moist (or irrigate turf thoroughly before application)
Avoid applications in direct sunlight, evening applications are best
Do not exceed 300 psi/20 bar/2000 kPa pump pressure
Nozzle aperture should be greater than 0.5 mm
Suitable nozzles should produce a course spray at the intended application pressure
Make up the stock solution and mix thoroughly to ensure that the nematodes are well dispersed.
PrecautionsUpon receipt, use immediately or store in a refrigerator at 5°C
Do not use product if past expiry date or incorrectly stored (do not freeze)
Use entire packet at one time, do not store diluted product

How do Nematodes work?

• Nemasys® G is applied to the turfgrass at high foliage or to the soil.

• After application our specially selected nematodes attack the insect pest by entering natural body openings or by penetrating the pest cuticle directly.

• Once inside, they release bacteria that stops the pest from feeding, quickly killing the pest.

• They do not stop there. The nematodes reproduce inside the dead pest.

• They release a new generation of hungry nematodes, which disperse to hunt down further pests.

• When nematodes can no longer find a host pest, they will die back to their original numbers. The more pests there are, the better nematodes perform.

 Technical Services Hotline +44 845 602 2553

Technical Services Hotline +44 845 602 2553

Technical Services Hotline

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