Alfalfa, also called lucerne, is a perennial flowering plant in the legume family Fabaceae. It is cultivated as an important forage crop in many countries around the world. It is used for grazing, hay, and silage, as well as a green manure and cover crop. The name alfalfa is used in North America. The name lucerne is more commonly used in the United Kingdom, South Africa, Australia, and New Zealand. The plant superficially resembles clover, especially while young, when trifoliate leaves comprising round leaflets predominate. Later in maturity, leaflets are elongated. It has clusters of small purple flowers followed by fruits spiralled in two to three turns containing 10–20 seeds. Alfalfa is native to warmer temperate climates. It has been cultivated as livestock fodder since at least the era of the ancient Greeks and Romans.

रिज़का या अल्फाल्फा मटर परिवार फबासिए का फूल देने वाला एक पौधा है जिसकी खेती एक महत्वपूर्ण चारे के फसल के रूप में की जाती है। यूनाइटेड किंगडम, ऑस्ट्रेलिया, दक्षिण अफ्रीका और न्यूजीलैंड में लुसर्न के रूप में जाना जाता है और दक्षिण एशिया में लुसर्न घास के रूप में. यह तिपतिया के समरूप दिखता है तथा छोटे बैंगनी रंग के फूल इस पर लगते हैं।