Trichoderma for Sesame (Til): Natural Biofungicide for Root Rot Control, Healthy Capsules & Higher Oil Yield

Trichoderma for Sesame (Til): Natural Biofungicide for Root Rot Control, Healthy Capsules & Higher Oil Yield

Sesame (Sesamum indicum), commonly known as Til, is one of the oldest and most valuable oilseed crops grown for its premium edible oil, high-quality seeds, and export potential. Healthy roots are essential for vigorous vegetative growth, flowering, capsule formation, and seed filling. However, sesame is highly susceptible to several soil-borne fungal diseases that affect seed germination, root health, and overall productivity.

Trichoderma is a beneficial fungal biofungicide that naturally protects sesame roots against harmful pathogens while promoting stronger root systems and improving soil biological activity. Species such as Trichoderma harzianum, Trichoderma viride, Trichoderma asperellum, and Trichoderma koningii colonize the rhizosphere, suppress disease-causing fungi, improve nutrient availability, and enhance overall plant vigor.

Unlike chemical fungicides that provide temporary disease control, Trichoderma establishes itself around the root system, offering continuous biological protection throughout the crop cycle while improving soil fertility and sustainability.

Benefits of Trichoderma in Sesame

  • Improves seed germination and uniform crop establishment.
  • Protects seedlings from damping-off.
  • Promotes vigorous and deeper root development.
  • Suppresses root rot and collar rot pathogens.
  • Improves nutrient and water uptake.
  • Encourages healthy vegetative growth.
  • Increases branching and flowering.
  • Enhances capsule formation and capsule retention.
  • Improves seed filling and seed weight.
  • Increases oil content and seed quality.
  • Enhances drought tolerance and environmental stress resistance.
  • Improves beneficial microbial activity in the rhizosphere.
  • Reduces dependence on chemical fungicides.
  • Improves long-term soil fertility.
  • Supports sustainable and organic sesame cultivation.

Diseases Managed

Trichoderma helps suppress several economically important soil-borne diseases affecting sesame, including:

  • Damping-off
  • Root Rot
  • Collar Rot
  • Seed Rot
  • Seedling Blight
  • Rhizoctonia Root Rot
  • Fusarium Root Rot
  • Pythium Root Rot
  • Charcoal Rot (Macrophomina phaseolina)
  • Sclerotium Stem Rot

Mode of Action

Trichoderma protects sesame through multiple biological mechanisms:

  • Rapidly colonizes the rhizosphere before pathogens establish.
  • Competes with harmful fungi for nutrients and root space.
  • Produces enzymes such as chitinase and glucanase that degrade fungal cell walls.
  • Releases natural antifungal metabolites that inhibit pathogen growth.
  • Directly parasitizes disease-causing fungi through mycoparasitism.
  • Activates the plant's natural defense system (Induced Systemic Resistance).
  • Stimulates root branching and root biomass.
  • Improves soil microbial diversity and nutrient cycling.

These biological activities provide season-long protection while promoting healthier crop development.

Recommended Application

Seed Treatment

Treat sesame seed with 8–10 g of Trichoderma powder per kg of seed before sowing. Allow the treated seed to dry in the shade before planting.

Soil Application

Mix 2–4 kg per acre of Trichoderma powder with 50–100 kg of well-decomposed farmyard manure (FYM) or compost and broadcast uniformly before sowing.

Furrow Application

Apply Trichoderma-enriched compost directly into seed furrows to establish beneficial fungi around the root zone.

Irrigation Application

Where irrigation facilities are available, compatible liquid Trichoderma formulations can be applied through irrigation water according to the manufacturer's recommendations.

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