Regent 20G

Mechanism of Action and Technical Design

Regent 20G by Basf S.A. is a specialized soil-applied insecticide based on fipronil, belonging to the phenylpyrazole chemical class. Unlike systemic insecticides that move through the plant's vascular tissue, this granular formulation is engineered for precise soil placement. It creates a critical barrier around the root zone, effectively neutralizing soil-dwelling pests like wireworms that threaten young crops during their most vulnerable developmental stages.

Technical Specifications of the Formulation

Fipronil acts by disrupting the GABA-gated chloride channels in the insect nervous system. This high-selectivity approach ensures rapid contact toxicity: pests are eliminated upon even minimal exposure to the treated soil layer. The 20G formulation (granules) is designed for steady, controlled release of the active ingredient, which is essential for providing long-term protection for crops with extended growing seasons, such as corn and potatoes.

Field Application and Utility

• Soil-Targeted Strategy: Direct soil application eliminates the risks associated with spray drift and protects the surface entomofauna.
• Resistance Management: Because it belongs to the phenylpyrazole class, Regent 20G is a vital tool for rotation programs, helping to overcome resistance developed against more common insecticidal agents.
• Broad-Spectrum Efficacy: The product delivers consistent performance across various crops, including forage beet, sunflower, hops, tomatoes, and corn.

Given its hazard class (2), adherence to safety protocols during handling and application is mandatory. With a dosage rate of over 4.0 kg/ha, it establishes a robust defensive perimeter against wireworms and weevils. A 28-day pre-harvest interval must be observed, requiring careful integration into the crop management calendar. This product is a standard for professional agronomists looking for localized, high-impact soil protection.