Medicago sativa seed | Alfalfa, Lucerne
LATIN NAME: Medicago sativa COMMON NAME: Alfalfa, Lucerne
Botanical Profile
Alfalfa is believed to have originated in the region spanning modern-day Iran and Central Asia, where it was domesticated in ancient times and now grows as a deep-rooted perennial legume with small trifoliate leaves and clusters of purple flowers. Its taproot is exceptionally deep, often reaching several metres into the soil in favourable conditions, allowing the plant to access moisture and minerals well beyond the reach of most other forage crops.
Science & Conservation
Alfalfa’s efficient nitrogen fixation and deep, drought-tolerant root system have made it one of the most extensively studied forage legumes in agricultural science, with breeding programmes worldwide working to improve yield, disease resistance and nutritional quality for the global hay and livestock feed industry. It was also among the first genetically modified crops developed for herbicide tolerance, a development that generated significant public and regulatory debate around GM crop coexistence with conventional and organic farming.
Landscape & Practical Uses
Alfalfa is one of the world’s most important forage crops, grown at enormous scale for hay and livestock feed thanks to its high protein content and reliable multiple cuttings per growing season, and its deep root system and nitrogen-fixing ability also make it valuable for improving soil structure and fertility in crop rotations. Sprouted alfalfa seeds are additionally eaten fresh as a popular, crunchy salad and sandwich ingredient.
Growing From Seed
Fresh seed germinates readily without special pretreatment; sow it into a loose, well-drained mix at a shallow depth and keep it consistently moist until seedlings establish. Full sun suits this deep-rooted perennial well, and once established it develops the notably deep taproot that gives mature alfalfa such reliable drought tolerance.
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