WEIDLEWSKI ARTA — a mid-season sunflower (Helianthus annuus L.) variety intended for cultivation under various climatic conditions, including the Central Chernozem, Middle Volga, and Lower Volga regions. The plant is characterized by green leaf coloration, absence or weak expression of pustulosity, and yellow disc florets. The plant height at maturity is very high, with no branching, promoting the formation of large seeds of snowy white color with distinct marginal stripes or weakly expressed stripes between the margins. The vegetation period varies from 111 to 123 days depending on the cultivation region. The variety is distinguished by high yield and oil content. Average yield in the Central Chernozem region is about 24-26 c/ha, with maximum yields reaching 41.5 c/ha, in the Middle Volga — approximately 17.5 c/ha, in the Lower Volga — about 21.4 c/ha. The 1000-seed mass ranges from 58.5 to 109.6 g, and the oil content in seeds reaches 45.5-46.3%, ensuring high oil extraction — up to 12.1 c/ha. Additionally, the variety has good protein content in the kernel (about 23%) and is characterized by a shatter coefficient of 0.9, lodging rate of 24.5%, and kernel purity of 61%. WEIDLEWSKI ARTA is recommended for use in agriculture as an oilseed crop with confectionery applications. The variety exhibits moderate resistance to diseases such as white mold and false powdery mildew, enhancing its reliability and profitability in cultivation. Due to its agronomic characteristics and adaptability to various soil-climatic conditions, this sunflower is a profitable choice for farmers aiming to achieve high-quality yields.
