Alfalfa Variety Trial in Cochise County, Arizona, 1998

Abstract

Fourteen alfalfa varieties with fall dormancy ratings from 6 to 9 were tested in replicated small plot trials on the Kibler farm in Stewart District northwest of Willcox. The leading variety after four years of testing was DeKalb 189 with a dry matter yield over 5 tons per acre on 4 cuttings. This variety was also the leading variety over the four years of the trial with a four year average nearly 7.5 tons per acre. Heat units with temperature thresholds of 77 °F and 40 °F are given for each cutting.