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Trichoderma harzianum

Trichoderma harzianum is a beneficial soil fungus widely used as a biological control agent and plant growth promoter in modern agriculture. It suppresses key soil-borne pathogens and certain nematodes through mycoparasitism, antibiosis, and competitive exclusion in the rhizosphere, forming a protective barrier around roots and reducing disease pressure. Beyond disease management, T. harzianum enhances seed germination, root development, and overall plant vigor while activating the plant’s own defense pathways and improving tolerance to abiotic stress. It is a core species for sustainable agriculture and integrated pest management programs.

Strength

1 x 10⁸ CFU per gram / 1 x 10⁹ CFU per gram / 1 x 10¹⁰ CFU per gram

Benefits 

Biocontrol Agent


Trichoderma harzianum is a well-established biological control fungus used to help manage soil-borne fungal diseases. It acts through multiple mechanisms, including rapid root-zone colonization, competition with pathogens for nutrients and space, production of antifungal enzymes and secondary metabolites, and direct antagonism against harmful fungi. These combined actions help reduce disease pressure and support more sustainable crop protection strategies.

Strong Rhizosphere Adaptability


As a highly competitive rhizosphere fungus, T. harzianum can establish itself around plant roots and remain active under a wide range of soil and environmental conditions. Its strong colonization ability supports a more resilient root-zone microbiome and contributes to improved soil biological activity.

Plant Growth Promotion


Beyond disease suppression, T. harzianum supports plant growth by improving root development, nutrient uptake, and overall plant vigor. Its interaction with the root system can help crops establish stronger root architecture, which improves access to water and nutrients during early and active growth stages.

Induced Systemic Resistance


T. harzianum can help activate the plant’s natural defense responses. By priming induced systemic resistance, it prepares plants to respond more effectively to pathogen attack, supporting healthier crops and improved resilience against a wide range of biotic stresses.

Dosage & Application

Wettable Powder: 2 x 10⁶ CFU per gram

  • Other Uses: Can also be used as nematicides; can be used as bio seed care

  • Seed Dressing: mix 5g Trichoderma Harzianum with 5g crude sugar in sufficient water to make a slurry and coat seeds and dry in shade and sow / broadcast / dibble in the field. Do not store treated / coated seeds more than 24 hrs.

  • Foliar Application: 1 Acre dose: 3-5 kg, 1 Ha dose: 7.5 - 12.5 Kg

  • Soil Application (Soil drench or Drip irrigation): 1 Acre dose: 3-5 kg, 1 Ha dose: 7.5 - 12.5 Kg

  • Soil Application (Soil drench or Drip irrigation) for Long duration crops / Orchards / Perennials: 1 Acre dose: 3-5 kg, 1 Ha dose: 7.5 - 12.5 Kg, Apply 2 times in 1 Year. Before onset of monsoon and after monsoon.

  • Seed Dressing: 1 Kg seed: 5g Trichoderma Harzianum + 5g crude sugar

  • Foliar application for Long duration crops / Orchards / Perennials: 1 Acre dose: 1 Kg, 1 Ha dose: 2.5 Kg, Apply 2 times in 1 Year. Before onset of monsoon and after monsoon.


Soluble Powder: 1 x 10⁸ CFU per gram 

  • Foliar Application: 1 Acre dose: 1 Kg, 1 Ha dose: 2.5 Kg

  • Soil Application (Soil drench or Drip irrigation): 1 Acre dose: 1 Kg, 1 Ha dose: 2.5 Kg

  • Soil Application (Soil drench or Drip irrigation) for Long duration crops / Orchards / Perennials: 1 Acre dose: 1 Kg, 1 Ha dose: 2.5 Kg

  • Seed Dressing: 1 Kg seed: 0.5g Trichoderma Harzianum + 5g crude sugar

  • Foliar Application for Long duration crops / Orchards / Perennials: 1 Acre dose: 1 Kg, 1 Ha dose: 2.5 Kg, Apply 2 times in 1 Year. Before onset of monsoon and after monsoon.


Seed Dressing Method:

Mix Trichoderma Harzianum with crude sugar in sufficient water to make a slurry and coat seeds. Dry in shade and sow / broadcast / dibble in the field. Do not store treated / coated seeds for more than 24 hours.


Soil Application Method:

  • Mix Trichoderma Harzianum at recommended doses with compost and apply at early life stages of crop along with other biofertilizers. First application: At land preparation stage / sowing / planting. Second application: Three weeks after first application.

  • Mix Trichoderma Harzianum at recommended doses in sufficient water and drench soil at early leaf stage / 2-4 leaf stage / early crop life cycle.

  • Drip Irrigation: If there are insoluble particles, filter the solution and add to drip tank.

  • For long duration crops / Perennial / Orchard crops: Dissolve Trichoderma Harzianum at recommended doses in sufficient water and apply as a drenching spray near root zone twice a year. It is recommended to have the first application before the onset of the main monsoon / rainfall / spring season and the second application after the main monsoon / rainfall / autumn / fall season.


Foliar Application Method:

Mix Trichoderma Harzianum at recommended doses in sufficient water and spray on soil during the off-season. Apply twice a year for long duration crops. It is recommended to have the first application before the onset of the main monsoon / rainfall / spring season and the second application after the main monsoon / rainfall / autumn / fall season.


Note: Do not store Trichoderma Harzianum solution for more than 24 hours after mixing in water.

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