Abstract
Five soils formed in alluvium in central Nigeria are described, characterized and classified. One soil is on the present floodplain of the River Benue, while the others are on terraces of both the River Niger and the River Benue and their tributaries. Soils have a preponderance of mottles, sesquioxidic nodules and/or concretions and grayer colors of low chromas. Particle size distribution on a clay-free basis was used in addition to morphology and organic carbon distribution to determine the homogeneity of parent materials. The soil on the floodplain and two others on terraces are all formed in two different parent materials. Two other soils on terraces are formed in homogeneous parent materials. Most soils have a generally low effective cation exchange capacity, but higher values are found in neutral to moderately alkaline profiles containing smectite. The clay fractions are a mixture of kaolinite, smectite and some hydrous mica. Two soils are classified as Ustifluvents. The others are Tropaquepts, Plinthaquults and Argiaquolls. Equivalent FAO/UNESCO classifications are Dystric Fluvisols, Dystric Gleysols, Eutric Planosols, Plinthic Gleysols and Mollic Gleysols. Key words: Alluvium, hydromorphic, Nigeria, mixed clay mineralogy, classification
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
