Alfalfa: The Queen of Forages in North America

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Introduction “The Queen of Forages” is one title that alfalfa has earned in North America. Since its introduction in 1750s in the Americas alfalfa has grown to be the number one forage legume produced in North America. Alfalfa can be green chopped for silage, baled dry, baled as baleage, or used as pasture. Lucerne another common name for alfalfa has the highest feeding value of any other forage legume crop. High in digestible energy and protein makes alfalfa a valuable feed to livestock. Quality alfalfa primarily used for feeding dairy cows contains up to 22 percent of crude protein (CP) and 70 percent of total digestible nutrients (TDN). As there’s a great demand for alfalfa, alfalfa has been modified to grow in different climates. …show more content…

When soil pH levels are maintained at 6.5 to 6.8 alfalfa grows best. Alfalfa can tolerate pH levels down to 4.5. As a producer if you see a decline in pH, applications of lime would increase pH levels. Fertilization of phosphorus (phosphate) and potassium (potash) is also required for high production. Phosphorus levels increase root growth for the plant. Alfalfa will remove 10 pounds of phosphorus per ton per acre out of the soil. Potassium another nutrient used by alfalfa helps the survival of alfalfa stands and increases yield. Alfalfa will remove 50 pounds of potassium per ton per acre out of the soil. For example if you have an alfalfa field that will yield 5 tons per acre you will need spread 50 pounds of phosphorus and 250 pounds of potassium per acre. Alfalfa being a very hardy plant alfalfa still needs adequate fertilizing to have a successful production …show more content…

This bacteria known as rhizobia requires it to be inside the root nodules to fix nitrogen for the plant. An average acre of alfalfa puts 200 pounds of nitrogen into the soil per year. This being why alfalfa is put into a crop rotation with other crops that need a lot of nitrogen. Alfalfa’s lifespan can range from 3 to 10 years depending on soil type and how well the alfalfa is maintained. When an alfalfa field of 40 acres is in alfalfa for 5 years it puts 20 tons of nitrogen into the soil ready to be used for the next crop. One famous crop rotation is corn and alfalfa. Farmers see an extreme yield boast when corn is planted following alfalfa. Research has shown that corn yields increase by 10 to 15 percent. Nitrogen fertilizer cost for first-year corn can be reduced by 100 percent. Alfalfa also is planted for as a soil-conserving crop which improves soil structure, fertility and prevents soil loss. The university of Missouri conducted a test of an average soil loss per acre in various crops. They found that alfalfa compared to many other crops had the least loss of soil per acre. Not only does alfalfa serve as a valuable crop to make a profit but also valuable to conserve the

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