THE PLANT PRODUCTION INSTITUTE named after V.YA. YURIEV
National Academy of Agrarian Sciences of Ukraine

Riuryk

Sunflower Helianthus annuus L.
A short-season high-yielding linoleic hybrid used for oil

Originator - Plant Production Institute named after V.Ya. Yuriev of NAAS.

Registration year - 2010. Recommended zones of cultivation: Forest-Steppe of Ukraine.

Short-season. The growing period is 95-100 days.

The plant height is 160-170 cm. The calathidium is slightly domed, with a diameter of 18-21 cm. The hybrid is highly resistant to lodging and shedding.

It is drought resistant. Tolerance to head rot.

The husk content is 23.0%. The 1000-seed weight is 48.0-50.0 g. The oil content in seeds is 51.0%.

The yield potential is 4.1 t/ha. The yield in the demonstration field of the Plant Production Institute named after V.Ya. Yuriev is 3.56 t/ha.

The recommended pre-harvest plant density is 55,000 plants/ha.

Seed production peculiarities. The parents in hybridization plots are sown simultaneously. The female/male row ratio in hybridization plots can be 6:2; 8:4; 10:2; or 12:4.

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