Active ingredient:
Trichoderma harzianum T-22
Common name:
Soil-dwelling fungus
Product category:
  • Prevents and controls soil borne diseases

  • Promotes plant growth and uniformity

  • Granule formulation can be easily mixed with or spread over the growing substrate or applied at sowing or planting

  • Prevents and controls soil borne diseases

  • Promotes plant growth and uniformity

  • Granule formulation can be easily mixed with or spread over the growing substrate or applied at sowing or planting

Use for

Use for

Trianum-G protects plants against a range of soil-borne root diseases through several different modes of action. It also improves root system development, nutrient uptake and plant growth.


Trichoderma harzianum T-22 protects against soil-borne diseases such as Pythium spp., Rhizoctonia spp. and Fusarium spp. In addition, Trianum-G promotes plant growth and uniformity.


Trianum-G can be used in most crops.

How it works

How it works

Mode of action

The mode of action of Trianum-G is based on the following mechanisms:

Competition for space
Trianum-G grows faster on the surface of the root than other soil-borne fungi. Other fungi get less chance to establish on the roots.

Competition for nutrients
Trianum-G takes away the source of nutrients that the pathogens need. The pathogens therefore have less chance to develop.

Parasitism of pathogens
Trianum-G grows around the mycelia of the pathogens. The cell walls of the pathogens break down and the pathogens die.

Strengthening of the plant
Trianum-G improves the root system through the formation of more root hairs, so that water and nutrients can be taken up better. This leads to a stronger and more uniform crop and better yields. This effect is stronger when the plant is under stress and/or cultivated under less than optimum growing conditions. Trianum-G also reinforces the defence mechanism of the parts of the plant above ground, the so-called induced systemic resistance (ISR). Trianum-G has the capacity to make certain 'fixed' nutrients such as manganese and iron available for the plant to take up.

Product specifications

Product specifications

Pack size 5 kg and 20 kg bags.
Formulation Granules (GR).
Concentration 1.5x10⁸ cfu (viable Trichoderma harzianum T-22 spores)/gram.
Directions for use

Directions for use


Trianum-G can be mixed with substrate or spread on the soil or in the furrow.

Mixing with substrate:
Make sure Trianum-G is uniformly mixed with the substrate.

Application on soil:
Do not apply this product as a broadcast application. Cover applied product with soil or otherwise incorporate it into the soil.

In case of mechanical application with a granule spreader, the spreader's exit hole should be as close to the soil as possible to prevent wind blowing away the small granules. Make sure that the Trianum-G granules flow smoothly through the tube system of the spreaders (avoid curves in the tubes).

Use a dosage spoon for manual application to ensure uniform application.


  • The dosage of Trianum-G depends on the crop and should always be adjusted to the particular situation. Check the label to find the recommended dosage for each crop and situation
  • Application rates typically range from 15-25 kg/ha or 375-750 gram/m3 of growing substrate
  • Consult a Koppert advisor or a recognized distributor of Koppert products for advice on the best strategy for your situation


Apply as early as possible in the crop cycle.

Environmental conditions

Trianum-G performs well under different environmental conditions. Trichoderma harzianum T-22 grows in a wide temperature range (10-34°C/50-93°F), at a pH between 4 and 8, in many types of cultivation media and on the roots of many different crops.

Side effects

Pesticides can have (in)direct effects on biological solutions. Find out which pesticides have side effects on this product.

Go to side effects database
Product handling

Product handling

Storage time after receipt

See package for expiry date.

Storage temperature


Storage conditions

Keep away from direct sunlight.


"The general conditions of Koppert (Koppert B.V. and/or of its affiliated companies) apply. Only use products that are permitted in your country/state and crop. Always comply with the conditions specified in local product registrations. Koppert cannot be held liable for unauthorized use. Koppert is not liable for any loss of quality if the product is stored for longer than recommended and/or under incorrect conditions."

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