Effects of NPK Single Fertilizers on Relative Growth Performances of Two Cycles of Maize (Zea mays L.) Grown in a Degraded Soil of Southwest Nigeria

K. S. Chukwuka, S. Ajala, P. C. Nwosu and O. E. Omotayo

Journal of Agronomy 14 ( 4 ): 203 - 211 , 2015