Trichoderma atrobrunneum strain ITEM 908

Trichoderma atrobrunneum strain ITEM 908 (formerly identified as T. harzianum) is a potent biological fungicide utilized in professional agriculture to suppress soil-borne fungal pathogens. This specific strain has gained recognition for its robust antagonistic properties, making it a reliable component in sustainable and integrated crop management systems.

The primary mode of action of this strain involves mycoparasitism, where it actively attacks and decomposes the cell walls of harmful fungi like Fusarium and Rhizoctonia species. In addition to parasitism, it outcompetes pathogenic microorganisms for space and nutrients in the rhizosphere and produces secondary metabolites that inhibit the germination of pathogenic spores, effectively shielding the root system.

It is commonly applied to a wide array of crops, including vegetables, fruits, and ornamental plants, specifically targeting seedling damping-off and root rot diseases. The application is most effective when the inoculum is introduced to the seed bed, seedling substrate, or soil at the time of planting, allowing the beneficial fungus to establish a protective colony before pathogens take hold.

Effective usage requires attention to environmental conditions. Trichoderma atrobrunneum thrives in moist soil conditions and moderate temperatures. Because it is a living organism, its efficiency can be reduced by extreme chemical fertilizers or harsh soil disinfectants. Farmers should maintain a strict separation period if applying chemical fungicides in the same area.

Safety precautions for handling the product include wearing dust masks and gloves to prevent irritation, as spores can cause respiratory sensitivity in some individuals. The product should be stored in a cool, dry place away from direct sunlight to preserve the colony-forming units (CFUs) and ensure the viability of the strain during application.