Trichoderma afroharzianum and atrobrunneum

Trichoderma afroharzianum (strain T-22) and Trichoderma atrobrunneum (strain ITEM 908) are widely recognized beneficial fungal strains utilized as active ingredients in modern biological plant protection products. These fungi act as powerful biocontrol agents, specifically targeting various soil-borne pathogens that threaten the health and yield of numerous crop species.

The mode of action for these strains is multifaceted, involving mycoparasitism, nutrient competition, and the induction of systemic resistance in host plants. By colonizing the rhizosphere, these beneficial fungi physically displace harmful pathogens and produce enzymes that degrade the cell walls of fungi such as Fusarium, Pythium, and Rhizoctonia, effectively suppressing their growth.

These biological fungicides are primarily applied through seed treatments, soil drenching, or incorporation into growing media. They are highly valued in both conventional and organic farming systems for their ability to promote root development, increase nutrient uptake, and provide a lasting protective barrier against root rots and damping-off diseases.

Application success depends heavily on environmental conditions, particularly soil moisture and temperature, which favor fungal proliferation. A critical precaution is to avoid tank-mixing or applying these biologicals concurrently with aggressive synthetic chemical fungicides, as they can inhibit the viability and colonization capability of the Trichoderma spores.

• Biological control of soil-borne pathogens
• Enhanced root system architecture
• Induction of plant systemic resistance
• Eco-friendly and sustainable protection
• Improved resilience to abiotic stressors

Safety measures for handling these products include basic personal protective equipment (PPE) like gloves and masks to prevent potential irritation, as with any microbial preparation. Products should be stored in a cool, dark environment to maintain the shelf life and viability of the active fungal spores, ensuring maximum efficacy upon application in the field.