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University of Minnesota Extension

Alfalfa fertilizer guidelines


For alfalfa, phosphorus (P), potassium (K), and sulfur (S) are the three big nutrients that we need. Nitrogen is not required because alfalfa plants fix nitrogen on their own. Excessive fertilization of P, K, and S does not necessarily mean you are going to get higher alfalfa yields or better persistence, and, in some cases, may result in luxury consumption. 


Daniel E. Kaiser, Extension nutrient management specialist

Reviewed in 2018

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