PRABHAKAR, S.; LAL, M.; KHERAWAT, B. S.; K, R.; KUMAR, A.; AGRAWAL, M. C.; SINGH, A. P. Effect of Phosphorus, Manganese and Growth Regulator (NAA) on Yield and Uptake of Nutrients by Cowpea (Vigna Unguiculata). Indian J Agri Sci 2013, 83 (6).