title: Variety testing of Helianthus annuus L. of domestic selection under conditions of the steppe zone of the Crimea
abstract: In 2019, in a single-factor experiment, two varieties of confectionery sunflower were studied in four-fold repetition: ‘SPK’ (control) and ‘Belochka’, as well as two oilseed varieties: ‘Umnik’ (control) and ‘VNIIMK 100’. The plot area is 56 m2, the registered area is 28 m2. The standing density is 30 thousand plants per ha. Climatic conditions in 2019 were generally favorable for the growth and development of sunflower plants. Autumn-winter moisture reserves (for the period September-March) amou