Metarhizium brunneum strain Cb15-III

Metarhizium brunneum strain Cb15-III is a powerful active ingredient classified as an entomopathogenic fungus. It serves as a biological insecticide that specifically targets insects by colonizing their bodies, offering a sustainable alternative to conventional chemical pesticides in modern integrated pest management (IPM) programs.

The mechanism of action relies on the fungus's ability to infect insects upon contact. Once the fungal spores adhere to the insect's cuticle, they utilize mechanical pressure and biochemical enzymes to penetrate the host's exoskeleton. Inside the host, the fungus colonizes the internal tissues, producing toxins that paralyze the insect, eventually leading to its death and potential sporulation to spread the control agent.

This agent is effectively applied to various crops, including potatoes, cereals, and orchard fruits, to control soil-borne pests like wireworms, white grubs, and mole crickets. By suppressing these populations, the strain Cb15-III prevents root damage and ensures stable crop development without leaving harmful chemical residues in the harvest or the soil profile.

Application practices necessitate optimal environmental conditions, particularly regarding soil moisture and temperature, which are essential for fungal germination and persistence. It is commonly applied via soil drenching, incorporation during tillage, or direct application near the planting rows. Timing is key, as bio-agents typically show a lag phase before reaching peak efficacy compared to synthetic products.

• Avoid mixing with strong fungicides.
• Ensure adequate moisture during application.
• Store in a cool, dry place away from direct sunlight.

Regarding safety measures, although Metarhizium brunneum is non-toxic to humans and vertebrates, workers should follow standard safety protocols. Using personal protective equipment, such as respirators and gloves, is recommended to prevent excessive inhalation or skin contact with concentrated spores. The product should be kept in original packaging to maintain microbial viability until use.