Sunflower Sulfostar

Technical Profile of the Sulfostar Hybrid

The Spanish breeding company Hibrisol S.L. has developed Sulfostar as an intensive-model hybrid specifically engineered for the Clearfield (Euro-Lightning) production system. Technically, this allows for comprehensive weed control without mechanical inter-row tillage, preserving essential soil moisture and reducing physical stress on the root system during the plant's vegetative stages.

Phytosanitary Stability as a Productivity Driver

The genetic architecture of the Sulfostar hybrid is built upon robust resistance to key pathogens that typically threaten yield in temperate and semi-arid climatic zones:

• Downy Mildew (Peronospora): The inclusion of vertical resistance genes protects the crop against early-season infection, ensuring uniform stand density.
• Rust and Powdery Mildew: Hibrisol’s selective approach provides a prolonged "green-leaf" effect, delaying senescence and allowing the plant to maximize nutrient translocation to the seeds.

Oil Content and Quality Metrics

A consistent oil yield of 50–55% is achieved through optimized lipid accumulation pathways during the flowering and seed-filling stages. By combining this high oil potential with tolerance to imidazolinone herbicides, Sulfostar offers growers a versatile solution for managing fields with heavy weed pressure, including parasitic species like broomrape. The hybrid's ability to maintain productivity under chemical weed control regimes makes it a reliable asset for modern agronomic practices.