N. O. Olla

Heavy Metal Presence in Roadside Soils along Major Highways in Igboora, Oyo State, Nigeria

N. O. Olla, W. B. Bello, S. O. Ogunjinmi, K. A. Akanji, T. O. Fawole, M. I. Olaniyan, O. O. Godspower & H. A. Busari · Asian Soil Research Journal · 2026

This study assessed the concentrations and spatial distribution of selected heavy metals in roadside soils along major highways in Igboora, Oyo State, Nigeria. Soil samples were collected from three highway locations: Abeokuta–Igboora–Iseyin Highway, Igboora–Idere–Igangan Road, a...

Open access Research Article 10.9734/asrj/2026/v10i3239

Influence of Organic and Inorganic Fertilizers on Soil Chemical Properties and Nutrient Changes in an Alfisol of South Western Nigeria

D. S. Ogundijo, M. T. Adetunji, J. O. Azeez, T. A. Arowolo, N. O. Olla & A. F. Adekunle · International Journal of Plant & Soil Science · 2015

Temporal changes in soil organic matter and other chemical properties influence the availability of nutrients to plants with or without the application of fertilizers. For proper soil management, these changes must be accounted for. Pot experiment was conducted to assess changes...

Open access Research Article 10.9734/IJPSS/2015/18355