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Alfalfa (/ æ l ˈ f æ l f ə /) (Medicago sativa), 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.
10-10-10 fertilizer has equal parts nitrogen, phosphorus, and potassium. Learn about liquid and granular 10-10-10 fertilizer and when and how to use them.
This symbiosis promotes the development of a plant organ, termed a root nodule. Because soil often contains a limited amount of nitrogen for plant use, the symbiotic relationship between S. meliloti and their legume hosts has agricultural applications. [12] These techniques reduce the need for inorganic nitrogenous fertilizers. [13]
In the soil, the amino acids are converted to nitrate (NO − 3), making the nitrogen available to other plants, thereby serving as fertilizer for future crops. [ 12 ] [ 13 ] Legumes play a key role in the nitrogen cycle , making nitrates available to other plants in the soil.
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Plants called legumes, including the agricultural crops alfalfa and soybeans, widely grown by farmers, harbour nitrogen-fixing bacteria that can convert atmospheric nitrogen into nitrogen the plant can use. Plants not classified as legumes such as wheat, corn and rice rely on nitrogen compounds present in the soil to support their growth.
Oats as nurse crop for alfalfa. In agriculture, a nurse crop is an annual crop used to assist in establishment of a perennial crop. [1] The widest use of nurse crops is in the establishment of legumaceous plants such as alfalfa, clover, and trefoil. [1] [2] Occasionally, nurse crops are used for establishment of perennial grasses. [citation needed]
Grain meals can be made of corn gluten, alfalfa, cottonseed, or soybean. Most supply nitrogen and potassium, but soybean meal provides nitrogen and phosphorus. [27] When initially spread they can cause an increase in ammonia within the soil and burn seeds, it is recommended to use these after plants have developed, to ensure crop success.