Abstract

Alfalfa stem density can be an indicator of when alfalfa stands no longer have potential for high yield. Studies were conducted at University of Wisconsin Arlington Research Station and River Falls Farm where areas of differing plant density were selected within 1-, 2- and 3-year-old fields of differing varieties each year, for three years. Stem density and yield were determined on the same plot areas for each cutting and plant density was determined at the end of the season. Plant density and stems per plant had little relationship to yield. Stem density below 40 stems/ft² had reduced yield potential.

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