Zinc Soil Test Calibration Based on 0.1 N HCl Extractable Zinc and Cation Exchange Capacity from Upland Soils of Northern Nigeria

N. Abdu, A.A. Yusuf, A. Abdulkadir, U.L. Arunah, V.O. Chude and S.G. Pam

Journal of Agronomy 6 ( 1 ): 179 - 182 , 2007