Trianum-G Biofungicide for the reduction of soil-borne diseases Trichoderma harzianum Rifai strain KRL-AG2 (also known as T-22)

Use Trianum-G for:

Trianum-G is a preventative biological fungicide for control of soilborne plant pathogens and plant root diseases.  The active ingredient is a microbe, Trichoderma harzianum.  When applied as an inoculant to soil, planting mixes or turf, grows onto plant roots as they develop and provides protection against plant root pathogens such as Pythium, Rhizoctonia, Fusarium, Cylindrocladium and Thielaviopsis.


Trianum-G is available in the U.S. in 20kg packages.
Formulation:  Granule (G)
Concentration:  1.32% Trichoderma harzianum Rifai strain KRL-AG2.  Contains at least 1.0x107 colony forming units per gram dry weight.

General information

When to use Trianum-G?

Trianum-G increases the resistance of plants against stresses that may be caused by diseases, sub-optimal feeding, watering regimes, and climatic conditions. 

How does Trianum-G work?

Trianum contains spores of the beneficial fungus Trichoderma harzianum strain T-22. When Trianum is applied correctly, the plant develops mycelia, which grows along the roots and protects the roots of the crop against diseases such as:

  • Fusarium
  • Pythium
  • Rhizoctonia
  • Sclerotinia
  • Cylindrocladium
  • Thielaviopsis

Trianum works on the basis of the following mechanisms:

1. Competition for space
Trianum grows faster on the surface of the root than other soil-borne fungi. Other fungi have no chance to establish themselves on the roots.

2. Competition for nutrients
Trianum takes away the source of nutrients that the pathogens need to feed on. They therefore have no chance to develop.

3. Parasitism of pathogens
Trianum grows around the mycelia of the pathogen. The cell walls break down and the pathogen dies.

4. Strengthening of the plant
Trianum improves the root system through the formation of more root hairs, so that water and nutrients can be absorbed better. This leads to better yields of a stronger and more uniform crop. The difference is particularly notable when the plant is under stress and/or cultivated under less than optimum growing conditions.

5. Induced resistance
Trianum also reinforces the defense mechanism of the parts of the plant above ground, the so-called induced systemic resistance (ISR).

6. Absorption of fixed and non-fixed nutrients
Nutritional elements such as certain trace elements and phosphates are sometimes fixed in the soil. Therefore, cannot be absorbed by the plant. This particularly happens in soil with a higher level of acidity (i.e. with a lower pH). Phosphates often form compounds with calcium, iron or other trace elements. As a result they are no longer soluble.

Trianum has the capacity to make certain “fixed” nutrients available for the plant to absorb. Certain elements, such as manganese, are essential for the plant to fight diseases. Manganese is important for the natural defenses of the plant against diseases.

Trianum produces certain substances which, amongst other effects, change iron from Fe3+ into Fe2+, making it possible for the plant to absorb it.

How to use Trianum-G

Application Trianum-G

Trianum-G Biological Fungicide is for use in soil applications (drench, in soil furrow and potting soil) and seed treatments in or on all raw agricultural commodities, food and fiber crops, ornamentals, landscape plants, turf and trees, including tree seedlings for transplanting into the forest.  See Trianum-G Biological Fungicide label for full list of crops, application methods and rates.


Trianum-G is registered for sale in the following U.S. states and territories: 

  • AZ, CA, CT, DE, FL, GA, KY, MI, MN, NJ, NY, ND, OR, PR

Best working conditions Trianum-G

Use Trianum-G as a preventive method. To achieve optimal results, start using Trianum-G at the beginning of the crop cycle, preferably during sowing, cutting or planting. Trianum-G performs well under different environmental conditions. It grows in various climates (10-34°C/50-93.2°F), at a pH between 4-8, in many types of cultivation media and on the roots of many different types of crops.


Koppert Biological Systems, Inc. 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 expiration date
  • Storage temperature: between 4-8 ºC/39.2-46.4°F
  • Keep away from direct sunlight. 

Get in touch with the expert

Koppert Biological Systems

Thanks for your request!

Something went wrong, please try again

Want to know more about our company and products? Get in touch with one of our experts.
Please allow 24-48 hours for our experts to respond to your inquiry.
We produce our products and solutions for professional growers in horticulture.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service.

Subscribe to our newsletter

Get the latest news and information about your crops directly in your mailbox

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service.
Scroll to top