Geochemical Characterization of Soils in A Semi-Urban Extension Area of Minna, Northcentral Nigeria Using EDXRF Instrumental Analysis

Year 2025, Volume: 7 Issue: 2, 287 - 295, 31.08.2025

Jimoh Rafiu Atanda Ogungbade Olubukola Emmanuel Adeniji Moradeyo Asifat Okoli Ezindu Ebuka Olaleye Oluwatobi Solomon Salami Jamiu Ademola

Abstract

A study on pedogeochemistry and agrogeochemistry was conducted on an open Farm field to evaluate the trace and macro elements in the soil and their effects on Dioscorea rotundata (white yam) yield. Twenty soil samples were collected at predetermined depths and distances across the farm and analyzed using Energy Dispersive X-ray Fluorescence (EDXRF) focusing on soil geochemical anomalies and their impact on yam yield in Chanchaga Local Government Area, Niger State, Nigeria. Results showed that high potassium absorption led to impaired yield, harvest loss, and premature crop death. The mean concentrations of key elements were potassium (1.8%), calcium (1.5%), iron (1.4%), magnesium (0.42%), copper (127 ppm), zinc (127 ppm), and manganese (739 ppm), following the order K > Ca > Fe > Mg for minor elements and Mn > Zn for major elements. These values were compared with Alloway (1995) standards for essential nutrients in yam cultivation. Excessive potassium absorption negatively affects yam yield, while imbalanced element proportions can impact crop health and human consumption. Ensuring optimal soil geochemistry is crucial for sustainable yam production and food safety

Keywords

Pedogeochemistry , agrogeochemistry , white yam , minor , major , energy dispersive X-ray Fluorescence

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