Ron sunflower seeds. High-fat 7 Contagion. 50 granstar, Dnipropetrovsk region.

MAIN CHARACTERISTICS OF RON SUNFLOWER HYBRID:
Maturity group - medium ripe.
Vegetation period – 110-118 days.
Yield potential - 45 t/ha.
The height of the plants is 160-180 cm.
Basket flat, large, diameter - 15-24 cm.
The oil content is 51-52%.
The weight of 1000 seeds is 77-85 gr. 150
 
RESISTANCE TO DISEASES AND STRESS FACTORS OF RONA SUNFLOWER:(//tractor-service.com)
Very high resistance to drought.
Excellent cold resistance.
Good resistance to laying.
Resistance to infection – 7 races (AG ).  
 Tolerant to diseases: false powdery mildew, white and gray rot. 

Suitable for growing in fields prone to sunflower infection.
Recommended density before harvesting:
- Forest-steppe: 50-55 thousand plants/ha;
- Step: 55-60 thousand plants/ha.