The field experiment was conducted during Kharif season of 2008-09 and 2009-10 at Instructional Dairy farm, G B Pant University of Agriculture & Technology, Pantnagar to study the effect of varieties and phosphorus on yield and quality of cowpea fodder yield attributes of cowpea in Mollisols of Tarai region of Uttarakhand. The experimental site was high in organic carbon, 0.848 %, medium in available nitrogen, 278.48 kg/ha, available phosphorus, 27.7 kg/ha and available potassium, 232.8 kg/ha with neutral in reaction, pH 7.6. The experiment consisted of 6 cowpea entries namely UPC-9202, UPC-4200, UPC-626, UPC 628, UPC-629 and Bundel Lobia-1 and three phosphorus levels viz. 40, 60 & 80 kg P2O5/ha was laid out in factorial RBD with three replications.  The UPC-626 produced 2.7% higher green fodder yield than UPC-629, though remained non significant to each other. The green fodder yield was recorded 22% higher at 80 P/ha than 60 kg P/ha, while it was 21% higher at 60 kg P/ha than 40 kg P/ha. Similarly 80 kg P had 9.8% higher dry fodder yield than 60 kg P level, while it was 34.6% higher at 60 kg P than 40 Kg P /ha. The crude protein was also recorded highest in UPC-628 at application of 80 kg P/ha.

Keywords : Cowpea; Crude Protein; Phosphorus; Fertilization.