Alfalfa fields are growing well across most of Iowa. The next few nights have frost or freeze warnings, with predictions of night low temperatures as low as low 20s. Low temperatures, whether visible frost is present or not, may affect the growth of both established forage plants, as well as newly emerged seedlings.
Iowa State University
Barnhart, Stephen K., "Cold Injury to Alfalfa" (2012). Integrated Crop Management News. 175.
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