Sofit, KS (permethrin, 500 g/l)

Technical Profile: Sofit, SC

The formulation features promethryn at a concentration of 500 g/l, a classic triazine herbicide known for its systemic activity. The suspension concentrate form ensures high stability of the tank mix and uniform particle distribution across the soil surface. A key engineering advantage of Sofit is its ability to establish a resilient “soil barrier,” which is essential for pre-emergence control of weeds in sensitive crops.

Mechanism of Action and Selectivity

Sofit operates primarily by inhibiting photosynthesis (Photosystem II) in germinating weeds. As a soil-applied herbicide, it is absorbed through the weed's root system, stopping development at the “white thread” stage. The selectivity is achieved through the crop’s physiological ability—specifically in sunflowers, soybeans, potatoes, carrots, coriander, beans, and peas—to detoxify promethryn while the herbicide remains active against targeted annual grasses and broad-leaved weeds.

Practical Application Standards

• Soil Preparation: The efficacy of Sofit is tied to the soil tilth. A fine, crumbly soil structure is necessary to create a consistent barrier without gaps, ensuring full coverage of the treated area.
• Dosing Strategy: With an application rate of 2–4 L/ha, growers can adjust for soil texture; minimal rates are sufficient for light soils, while maximum rates are required for heavier or high-organic soils.
• Application Timing: Designed for a single pre-emergence application, Sofit effectively eliminates early-season weed competition for the first 4–6 weeks of crop growth, which is critical for maximizing yields.

Manufactured by Fabryka Agrokhimikativ in Cherkasy, Ukraine, this product is engineered to meet local agronomic requirements and provide consistent performance under varied field conditions.