SCOTT SINKLIER / AGSTOCKUSA / SCIENCE PHOTO LIBRARY SCOTT SINKLIER / AGSTOCKUSA / SCIENCE PHOTO LIBRARY
Alfalfa (Medicago sativa) also known as lucerne. Alfalfa is a nutrient-rich crop usually grown as a feed for livestock. It is a good source of the B- vitamins and the minerals potassium, magnesium and phosphorus. It is also useful as it enriches the soil in which it grows, using nitrogen from the air to make nitrates, a natural fertiliser.
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