Sunflower seeds JASON, Kharkiv region.

Included in the Register of Plant Varieties of Ukraine since 2007 for cultivation in the Steppe and Forest-Steppe zones of Ukraine.

Approbation signs:

plant height - 175 cm;

a flat-shaped basket with a diameter of up to 24 cm;

flakiness - 21%;

Armorability - 99.7%;

weight of 1000 seeds up to 62 g;

oil content in seeds up to 50.1%.

Biological features:

Maturity group - mid-early.

Vegetation period - 108 days.

Resistance to laying is high.

Resistance to shedding is high.

Resistance to damage by false powdery mildew is high.

Resistance to lupus is high.(//tractor-service.com)

Fairly resistant to drought and damage by root rot.

Economic signs:

the most common in production, the high-yielding three-line hybrid Yason, has a yield potential of 4.5 t/ha.

Features of growing technology:

the recommended density is 50 thousand/ha.

Preparation of arable land for sowing is generally accepted.

Under cultivation, or better together with sowing, ensure application of fertilizers N30P30K30.

Sowing done at the optimal time does not require desiccation.

Peculiarities of seed production:

on the hybridization sites, the parental forms are sown at the same time.

Seed crops do not need desiccation.

Harvesting is carried out at a seed moisture content of 10-12%, primary cleaning and drying to 7% are immediately carried out.

Calibration for fractions.

Productivity of the mother form - up to 2.8 t/ha.

The yield of conditioned seeds is 60%.