Authors : Massama-Esso N’goumtete; Dihéénane Diyakadola Bafai; Magnoudéwa Bassaï Bodjona; Kodjotsé Kossigan; Kékéli Codjo Maurille Aziade; Gado Tchangbedji

Volume/Issue : Volume 11 - 2026, Issue 4 - April

Google Scholar : https://tinyurl.com/bdd27v7z

Scribd : https://tinyurl.com/2rrj6u3m

DOI : https://doi.org/10.38124/ijisrt/26apr2155

Note : A published paper may take 4-5 working days from the publication date to appear in PlumX Metrics, Semantic Scholar, and ResearchGate.

Abstract : The degradation and contamination of agricultural soils by trace metal elements represent major environmental issues. Crop productivity and product quality are strongly influenced by the physicochemical characteristics of soils. The present study aimed to characterize the soil of the CRAL in Davié, a strategic agricultural research center in Togo. Standardized physicochemical analyses revealed an acidic soil, with a mean pH of 5.49, low organic matter content of 1.72%, and organic carbon content of 0.99%. Atomic absorption spectrophotometric analysis yielded mean concentrations of 51.80 mg/kg nitrogen, 2,474.75 mg/kg phosphorus, 98.35 mg/kg potassium, 718.33 mg/kg calcium, 337.468 mg/kg magnesium, and 188 mg/kg sodium. Particle size analysis showed a predominantly sandy texture, with sand representing 87% of the soil. FTIR results suggested the presence of kaolinite and quartz. Cadmium and lead concentrations were 0.148 mg/kg and 14.626 mg/kg, respectively, remaining below the applicable regulatory limits. Overall, the soil is acidic and low in organic matter, suggesting that organic amendments such as biochar or alkaline compost may be effective in correcting acidity and improving soil fertility.

Keywords : FTIR, Soils, Nutrients, Togo, CRAL.

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