Narrow-leaved lupin (Blue lupin) – belong to very proteinaceous plants. After the development of alkaloid-free varieties, it is also used for fodder. Their growing season is short, about 90-140 days, so they can be grown for seeds. The roots have the ability to take and “raise” phosphorus available to Armenian plants, so lupins are a good member of crop rotation in organic farms. It is recommended to cut the green mass at the stage of shiny pods (or milky maturity), when the maximum amount of nitrogen is accumulated in the plants. And for fodder, it is necessary not to replant and mow before the beginning of the formation of green pods, because after that the plants quickly become woody.
Use: for green manure, as it accumulates atmospheric nitrogen. For fodder for green mass, silage (especially mixtures with bell-shaped cereals) and hay. Not all varieties are suitable, it is necessary to look at the descriptions of the varieties to ensure that they are low in alkaloids. The seeds can also be used as fodder, and are suitable for feeding cattle, birds and pigs.
Cultivation features: carbonate soils are not suitable, it grows well in more acidic soils, but it is optimal when the pH of the soil is 5-6. The heat is not demanding, it can be sown early, it tolerates frosts. It is recommended to cover the seeds with nitrogen, especially when sowing in fields where lupine did not grow.