1. Mustapha, A.A., N. Abdu, E.Y. Oyinlola and A.A. Nuhu, 2023. Evaluating different methods of organic carbon estimation on Nigerian Savannah soils. J. Soil Sci. Plant Nutr., 23: 790-800.
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2. Mustapha, A.A., N. Abdu, E.Y. Oyinlola and A.A. Nuhu, 2020. Comparison of 3 different methods of CEC determination in Nigerian savannah soils. J. Appl. Sci., 20: 159-165.
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3. Mustapha, A.A., N. Abdu and J.M. Jibrin, 2017. Adsorption of cadmium, copper, lead and zinc on organically amended soil fractions using the freundlich, langmuir and dubinin-raduskevich models. Int. J. Soil Sci., 12: 43-53.
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4. Mustapha, A.A., B.A. Lawan, M.U. Dawaki, M.J. Magaji and M. Abdulwahab, 2017. Solubility of N, P, K and pH variability as influenced by mineral fertilizer and organic amendment on sandy loam in Kano state. Savannah J. Agric., 12: 30-35.
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5. Dawaki, M.U., S.M. Shehe, A. Lado, M.A. Yusuf, B.A. Lawan and A.A. Mustapha, 2017. Effects of soil amendments on maize rhizosphere potassium forms in an eutric cambisol in Kano, Nigeria. Savannah J. Agric., 12: 145-153.
6. Umar, A.M., N.A. Loks, U.N. Usman and A.A. Mustapha, 2015. Fertility status of some hydromorphic soils in Jama'are local government area of Bauchi state. Savannah J. Agric., 10: 75-80.