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A Comparison of Pigeonpea and Cowpea Forage Yield and Nutritive Value in the Southern High Plains of the USA Bulletin 802 Leonard M. Lauriault, Sangu V. Angadi, Mark A. Marsalis, Dawn M. VanLeeuwen1
Agricultural Experiment Station • College of Agricultural, Consumer and Environmental Sciences
Department of Plant and Environmental Sciences
Abstract Few options of warm-season annual legumes are available for the higher elevations of semiarid, subtropical regions such as the Southern High Plains of the USA; therefore, candidate species must be explored for these environments. Pigeonpea [Cajanus cajan (L.) Millspaugh] has not been evaluated for forage in this environment, and pigeonpea forage yield and nutritive value have not been compared with those of cowpea [Vigna unguiculata (L.) Walpers], which is currently the most commonly used warm-season annual legume in the region. Pigeonpea (GA-2) and cowpea (Iron and Clay) were compared in separately analyzed randomized complete block studies conducted in 2006 and 2007 at New Mexico State University’s Agricultural Science Center at Tucumcari using different fields and irrigation techniques each year. Cowpea was superior to pigeonpea for forage yield in 2006 and had numerically higher yield in 2007 [6.39 vs. 3.59 Mg ha-1 for cowpea and pigeonpea, respectively, in 2006 (P
