STEL'S, KE

Mechanism of Action and Selectivity

"STELS, KE" from the "Fabryka Ahrokhimikativ" is a systemic soil-applied herbicide based on flurochloridone. Unlike contact-only treatments, this compound acts by blocking the synthesis of carotenoids. In practical terms, this means that germinating weeds fail to develop a pigment system; as soon as they attempt photosynthesis, chlorophyll is instantly destroyed by sunlight, causing bleaching (albinism) and the subsequent death of the seedling.

Why the "Soil-Applied" Formula Matters

The emulsifiable concentrate (EC) formulation ensures an even distribution of the active ingredient in the topsoil layer, creating a consistent "protective screen." For sunflowers, this is crucial, as the crop is most vulnerable to grass and broadleaf weed competition during the first weeks after sowing. Through its systemic action, the herbicide is absorbed by weed roots and sprouts, arresting their development before they ever break the soil surface.

Application Recommendations

• Dosage: 2–3 L/ha, adjusted according to soil type and weed pressure.
• Timing: Must be applied strictly as a pre-emergence treatment before sunflower sprouts appear.
• Activation: The efficiency of the protective screen depends on soil moisture levels; proper seedbed preparation is essential for optimal results.
• Safety and Selectivity: Being a selective herbicide, it effectively targets weeds without causing phytotoxicity to the sunflower crop when application protocols are followed.

Classified as toxicity class 3, it requires standard handling precautions. Its selective, systemic nature makes "STELS, KE" a robust solution for maintaining weed-free fields in intensive agricultural systems.