Lupin "Starry" is a cover crop with high protein and nitrogen content that significantly enhances soil fertility without the use of mineral fertilizers. After growing on the field, the lupin adds 150 to 230 kg/ha of biological nitrogen and 35–40 tons/ha of organic matter to the soil, which is equivalent to applying 40–45 tons/ha of manure. Thanks to its well-developed root system, the plant actively absorbs elements important for its growth, especially phosphorus, improving soil structure and productivity.
The "Starry" variety belongs to the narrow-leaved lupin species and is distinguished by its high protein content in seeds – 39–40%. Grain yield reaches 4.0 tons/ha, while green mass yield reaches up to 70.0 tons/ha. Green mass contains about 3% protein, vitamins A and C, as well as minerals (calcium, potassium, phosphorus, manganese, iron, sulfur), making it a valuable feed for animals in the form of green fodder, silage, hay, or grass meal. Lupin does not require the use of desiccants and fungicides and possesses high resistance to diseases.
For growing lupin "Starry", sunny locations, slightly acidic or neutral soils (slightly alkaline, loam) are preferred. The plant grows up to 1.5 m in height and can live in one place for five to six years. After flowering ends, its rhizomes should be divided and transplanted to maintain productivity. With proper care – watering, fertilizing, and timely cutting of old shoots – the lupin provides a stable yield and improves soil quality for subsequent crops.
