M. A. Nwachokor.1 and P.O. Oviasogie2
1Department of Agronomy and Environmental Management, Faculty of Agriculture and Agricultural Technology, Benson Idahosa University, P.M.B. 1100, Benin City, Edo State, Nigeria.
2Chemistry Division, Nigerian Institute For Oil Palm Research, P.M.B. 1030, Benin City, Edo State, Nigeria.
Abstract: The study assessed the fertility status of Ferric Acrisols in the humid area of Nigeria. The objectives of the study were to provide data on the physical and chemical properties of the soils and to identify any constraints inherent in them that could adversely affect their productivity. Subsequently, appropriate measures to adequately ameliorate the constraints were recommended so as to enhance the fertility status and the overall productive potentials of the soils for upland crops. Among the fertility constraints identified were low effective cation exchange capacity and soil acidification. In addition, the clayey texture of the subsoil made these soils susceptible to erosion as well as caused harvesting difficulties. Liming was recommended to ameliorate the acidity constraints. Liming together with incorporation of organic materials into the soils were the measures needed to enhance their effective cation exchange capacity. Soil erosion control was to be given high priority especially by maintaining adequate surface cover and ensuring that tillage was limited to only when soil was drier than the plastic limit.
Keywords: Fertility status, inherent constraints, Ferric Acrisols, Upland crops, Humid area, Nigeria.