References
- Adepetu, J. A. (1986). Soil fertility and fertilizer requirement in Oyo, Ogun and Ondo States. F.D.A.L.R, Federal Ministry of Agriculture and Water Resources. (Publ.), Lagos.
- Adepetu, J. A., M. T. Adetunji, and D. V. Ige. 2014. Soil Fertility and Crop Nutrition, 362. Ibadan: Printed by Jumak Nigeria Limited.
- Amusan, A. A. (1991). Pedogenesis in granitic gneiss of humid tropical Southwestern Nigeria. Unpublished Ph.D. Thesis, Obafemi Awolowo University, Ile-Ife, Nigeria. 205.
- Ashaye, T. I. 1969. An examination of some soil profiles in Western Nigeria with respect to D’hoore’s classification of African soils. Nigerian Agricultural Journal 6:42–47.
- Burt, R. 2004. Soil survey laboratory methods manual. USDA-NRCS. Soil Survey Investigations Report No. 42, version 4.0.
- Chapman, H. D. 1965. Cation exchange capacity. In Methods of Soil Analysis, ed. C. A. Black, et al., 9, 891–901. Madison: Agronomy.
- Esu, I. E. 1991. Detailed Soil Survey of NIHORT Farm at Bunkure, Kano State, Nigeria. Zaria, Nigeria: Institute for Agricultural Research, Ahmadu Bello University.
- FAO. 2006. Guidelines for soil description, 97. 4th ed. Rome: Food and Agriculture Organization of the United Nations.
- Fasina, A. S., A. Raji, G. A. Oluwatosin, O. J. Omoju, and D. A. Oluwadare. 2015. Properties, Genesis, Classification, Capability and Sustainable Management of Soils from South-Western Nigeria. International Journal of Soil Science 10:142–52. doi:10.3923/ijss.2015.142.152.
- Fasina, A. S., F. O. Omolayo, A. A. Falodun, and O. S. Ajayi. 2007. Granitic derived soils in humid forest of southwestern Nigeria-Genesis, classification and sustainable management. American-European Journal of Agricultural and Environmental Sciences 2:189–95.
- Fasina, A. S., J. O. Aruleba, F. O. Omolayo, S. O. Omotoso, O. S. Shittu, and T. A. Okusami. 2005. Properties and classification of five soils formed on granitic parent material of humid southwest Nigeria. Nigeria Journal of Soil Science 15:21 – 29.
- Fasina, A. S., O. S. Shittu, S. O. Omotoso, and A. P. Adenikinju. 2006. Response of cocoa to different fertilizer regimes on some selected soils of Southwestern Nigeria. Agricultural Journal 1:272–76.
- Hassan, A. M., D. A. Raji, W. B. Malgwi, and J. O. Agbanin 2011. The basaltic soils of Plateau State, Nigeria: Properties classification and management practices. Proceedings of the 35th Annual Conference of the Soil Science Society of Nigeria, Minna, Nigeria March 7–11, 2011.
- Kadeba, O., and J. N. Benjaminson. 1976. Contribution of organic matter and clay to the cation exchange capacity of soils in the savannah zone of Nigeria. Communications in Soil Science and Plant Analysis, New York 7 (2):129–44. doi:10.1080/00103627609366628.
- Mekaru, T., and G. Uehara. 1972. Anion adsorption in ferruginous tropical soils. Soil Science Society of America proceedings 36:296–300. doi:10.2136/sssaj1972.03615995003600020027x.
- Melo, V. F., C. E. Schaefer, and S. C. P. Uchôa. 2010. Indian land use in the Raposa-Serra do Sol Reserve, Roraima, Amazonia, Brazil: Physical and chemical attributes of a soil catena developed from mafic rocks under shifting cultivation. Catena 80:95–105. doi:10.1016/j.catena.2009.09.004.
- Navarrete, I. A., B. V. Asio, J. Reinhold, and T. Kiyoshi. 2007. Characteristics and genesis of two strongly weathered soils in Samar, Philippines. Austrialian Journal of Soil Research 45:153–63. doi:10.1071/SR06103.
- Nye, P. H. 1955. Some soil forming processes in the humid tropics. Part 2-4. Journal of Soil Science 6:51–53. doi:10.1111/j.1365-2389.1955.tb00829.x.
- Ogban, P. I., O. Babalola, and A. M. Okoji. 1999. Profile characteristics of a typical toposequences in Southwestern Nigeria. Africa Soils 28:147–65.
- Ojanuga, A. G. 1978. Genesis of soils in the metamorphic forest region of southwestern Nigeria. Pedologie 28 (1):105–17.
- Olayinka, A. 2009. Soil Microorganisms, Wastes and National Food Security, Inaugural Lecture series 222. Ile-Ife, Nigeria: Obafemi Awolowo University.
- Rhoades, J. D. 1982. Cation exchange capacity. In Methods of soil analysis. Part 2. Chemical and microbiological properties, ed. A. L. Page et al. 149–57. 2nd ed. Madison, WI: Agron. Monogr. 9. ASA and SSSA.
- Ross, D. S. 1995. Recommended methods for determining soil cation exchange capacity. In Recommended Soil Testing Procedures for the Northeastern United States, 62–69. 2nd ed. Newark, DE: Station.
- Sharu, M. B., M. Yakubu, S. S. Noma, and A. I. Tsafe. 2013. Characterization and classification of soils on an agricultural landscape in Dingyadi district, Sokoto State, Nigeria. Nigerian Journal of Basic Applied Science 21:137–47.
- Shepherd, K. D., and M. G. Walsh. 2002. Development of Reflectance Spectral Libraries for Characterization of Soil Properties. Soil Science Society of America Journal 66:988–98. doi:10.2136/sssaj2002.9880.
- Soil Survey Laboratory Staff. 1995. Soil Survey Laboratory Information Manual. Soil Survey Investigations Report No. 45, Version 1.0. U.S. 72. Lincoln, Nebraska: Department of Agriculture, Natural Resources Conservation Service.
- Soil Survey Laboratory Staff. 1999. Soil Taxonomy–A Basic System of Soil Classification for Making and Interpreting Soil Surveys, 869. 2nd ed. Washington, DC: US Department of Agriculture, Natural Resources Conservation Service.
- Soil Survey Laboratory Staff. 2009. Soil Survey Field and Laboratory Methods Manual. Soil Survey Investigations Report No. 51, Version 1.0. R. Burt (ed.). US Department of Agriculture, Natural Resources Conservation Service.
- Soil Survey Laboratory Staff. 2011. Soil Survey Laboratory Information Manual. Soil Survey Investigations Report No. 45, Version 2.0. R. Burt (ed.). U.S. Department of Agriculture, Natural Resources Conservation Service.
- Soil Survey Staff. 2014. Keys to Soil Taxonomy, 344. 12th ed. Washington, D.C: United States Department of Agriculture, Natural Resources Conservation Service.
- Sumner, M. E., and W. P. Miller. 1996. Cation exchange capacity and exchange coefficients. In Methods of soil analysis. Part 3. Chemical methods, ed. D. L. Sparks, 1201–29. Soil Sci. Soc. Am. Book Series 5. Madison, WI: Soil Sci. Soc. Am.
- van Raij, B., and M. Peech. 1972. Electrochemical properties of some oxisols and alfisols of the tropics. Soil Science Society of Nigeria Journal 36:587–93. doi:10.2136/sssaj1972.03615995003600040027x.
- Yakubu, M., S. Baraya, and S. S. Noma 2011. Assessment of soil and water quality along river Kadanko in Sanyinna district, sokoto state. Proceedings of the 45th Annual Conference of the Agricultural Society of Nigeria, Nigeria.