Alfalfa (Medicago sativa), is a perennial and herbaceous forage from Leguminosae family. It has a deep root system which normally lives six to eight years. Due to high nutritional value Alfalfa is considered the premier forage of dairy cows. Additionally, it can also be made into silage by harvesting the forage and storing it in a silo while it is still moist, where it is preserved in a process called fermentation. Alfalfa is an important rotation crop as it adds nitrogen to soil and improves soil structure for future crops. Unlike other crops, alfalfa does not need nitrogen fertilizer. Nodules on alfalfa roots contain bacteria that take nitrogen gas from the air and convert it to nitrogen plants can use. In another words, legumes such as alfalfa convert atmospheric nitrogen into forms that plants can use. This process iscallednitrogen fixation. Alfalfa can be cut from 3-11times which totally the yield would be 14-18 ton/ha