NR 2221 sunflower hybrid is a medium-maturing oilseed crop intended for cultivation in various regions of Russia, including the Central Chernozem, North Caucasus, Middle Volga, Lower Volga, Ural, and West Siberian regions. The hybrid's vegetation period is approximately 123 days, with an average maturity date, enabling effective planning of agronomic activities. Early flowering contributes to successful yield formation under the specified regional conditions.
The average yield of NR 2221 reaches 31.5–32.3 centners per hectare depending on the region, indicating high productivity of the hybrid. The 1000-seed mass varies from 56.1 to 66.3 grams, indicating large seeds conducive to good germination and plant development. Oil content in the seeds is approximately 50%, making this hybrid attractive for sunflower oil production.
The hybrid exhibits comprehensive disease resistance: it is resistant to races A–E of downy mildew, moderately susceptible to white mold, susceptible to rust, but highly resistant to dry flower rot, Phomopsis, and false powdery mildew. The cultivation technology is conventional, facilitating its integration into existing agronomic systems. NR 2221 is recommended for oilseed use, confirming its high efficiency and economic attractiveness for agricultural producers.
