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ABSTRACT
The macronutrient concentrations of soils were studied in University of Benin. The investigation was carried out in two areas: Faculty of Agriculture Experimental Farm and Control Site (New Faculty of Agriculture Building), Edo State. The dominant particle size in both soil were sandy loam texture. The Soil pH of both was mainly strongly acidic but slightly acidic for 0-15 cm depth of Experimental Farm (5.13 – 4.16). The total organic carbon content in both area ranges from moderate to high with Experimental Farm having the highest (127.30). Organic matter (12.30) and total nitrogen (1.60) were more in Experimental farm and at the topsoil. Available phosphorus in the studied soils was high in Experimental Farm with 0-15 cm having the highest (28.40). The sodium and calcium content obtained were above the critical limit for Experimental farm. Although, magnesium content was high in both areas but slightly above the critical value of 1.90 - 2.0 cmol/kg when compared. The correlation analysis revealed significant relationships between various soil physical and chemical properties, reflecting the complex interplay between these factors in the soil environment. With the results observed, it is therefore recommended that the farming activities carried out in the study area should be accompanied with fertilizer or organic manure application to help improve the soil nutrient content for plant uptake. It is also recommended that sustainable soil management practices such as mulching and the use of cover crops should be encouraged to avoid leaching.
