DR 13

Technical Profile of the DR 13 Sunflower Hybrid

The selection work of Nikolai Savelyevich Cheban has resulted in DR 13, a hybrid designed for stable oil production under challenging phytosanitary conditions. The core technical solution lies in its genetic architecture, providing comprehensive protection against pathogens critical to Southern agricultural regions.

Phytosanitary Barrier

The biological resilience of this hybrid relies on the plant's capacity to withstand a complex of fungal diseases. DR 13 demonstrates high resistance to:

• Downy mildew (Peronosporosis) – through early-stage spore development inhibition.
• Phomopsis and Phoma – preventing stem necrosis, which is vital for maintaining vegetative mass integrity.
• White and gray rot – minimizing root zone and head damage even during high-moisture periods.

Agronomic Indicators and Herbicide Protection

Integration of the "Clearfield" (Euro-Lightning) technology into the hybrid's genetic code provides agronomists with a reliable tool for controlling hard-to-eradicate weeds and broomrape. The application of imidazolinones induces no phytotoxic stress on the plant.

The plant morphology (160–170 cm in height) is optimized for efficient harvesting processes. The medium-sized convex head ensures optimal filling space for the achenes. With a vegetation period of 100–110 days, the hybrid succeeds in accumulating a significant oil volume — between 50–55%, which is a superior performance for the medium-early segment.