FR 85509

Genetic Potential and Adaptability of the FR 85509 Hybrid

Choosing Syngenta sunflower seeds is a commitment to predictable results in diverse field conditions. The FR 85509 is a simple hybrid optimized for stable yield formation under intensive cultivation technologies. Its specific biological profile enables efficient moisture utilization during its 110-120 day vegetation period. Standing at 170-180 cm, the hybrid maintains a balanced ratio between vegetative mass and reproductive organs, effectively minimizing lodging risks.

Technological Edge: Herbicide Tolerance

A defining feature of the FR 85509 is its tolerance to imidazolinone herbicides, providing agronomists with the "EURO-LIGHTNING" application tool. The ability to control a broad spectrum of dicotyledonous weeds, grasses, and broomrape (Orobanche) directly within the crop significantly streamlines field management. This solution relieves competitive pressure on the sunflowers during the critical early growth stages, which is vital for securing the full potential of the flower head.

Phytosanitary Barrier

Syngenta's engineering approach to the breeding of FR 85509 is manifested in its multi-layered genetic protection. In modern farming, where pathogens adapt rapidly, this hybrid demonstrates robust resistance to economically damaging diseases:

• White Mold (Sclerotinia): minimizes damage to the flower head and stalk.
• Downy Mildew (Peronospora): prevents pathogen development during early growth stages.
• Phomopsis and Phoma: ensures leaf canopy integrity, which is critical for efficient photosynthesis during the seed filling phase.

This combination of traits makes the FR 85509 an essential technological asset for farms operating under the Clearfield system, aiming to mitigate yield loss risks caused by disease and uncontrolled weed infestation.