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Cold Injury to Alfalfa

April 9, 2012

By Steve Barnhart, Department of Agronomy

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.

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Cold Injury to Alfalfa and Forage Crops

April 7, 2009

By Stephen K. Barnhart, Department of Agronomy

Most of Iowa alfalfa fields have broken winter dormancy.  A few early April nights with temperatures in the low 20 degrees F or below will pose a risk of cold injury to alfalfa and other forage species. Low temperatures, whether visible frost is present or not, may affect the growth of both established forage plants and newly emerged seedlings.

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