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Journal of Multidisciplinary Studies

Discipline: Multidisciplinary Studies

The Journal of Multidisciplinary Studies (JMDS) is a peer-reviewed multidisciplinary journal which aims to publish biannually finest research articles in social sciences, natural sciences, engineering and technology and other subject areas. Submitted papers should describe original and previously unpublished works, not currently under review by another

JMDS provides a platform for dissemination of research findings, new research areas and techniques, conceptual developments and articles with practical applications and contribution to society.


Abstract
Chemical Properties of Soils under Oil Palm Plantation and Fallow in Ekpoma Edo State Nigeria
B.E. Amenkhienan, H.H.E. Isitekhale, P.A1. Walter

Due to the importance of oil palm, it has become one of the most rapidly expanding foods in Ekpoma, Edo State. One of the major constraints to oil palm plantation is soil fertility and soil nutrient distribution. Thus, this study identifies and compares the various chemical properties of soils under oil palm plantation and fallow lands in Ekpoma. The study investigates the key issues of soil chemical properties for sustainable agricultural development in Ekpoma, Edo State. Soil samples were collected from both sites based on slopes (upper, middle, and lower) at 0-15 cm. Soil samples were analyzed in the laboratory for chemical properties and texture. Results showed that for oil palm plantation mean soil pH was 5.3, organic carbon (OC) 8.88g/kg, total N 2.10g/kg, available P 1.63mg/kg, Ca 1.47cmol/kg, Mg 0.55cmol/kg, K 0.04 cmol/kg, Na 0.89 cmol/kg, effective cation exchange capacity (ECEC) 3.16cmol/kg, clay 9.47%, silt 4.07% and sand 86.47%. For fallow land, mean pH was 5.38, OC 23.00g/kg, total N 5.60g/kg, available P 1.14mg/kg, Ca 1.93cmol/kg, Mg 0.93cmol/kg, K 0.08 cmol/kg, Na 0.95 cmol/kg, ECEC 4.10 cmol/kg, clay 10.8%, silt 9.4% and sand 79.8%. Available P, Ca, K, Mg, and clay contents were very low in both soils. Organic carbon, ECEC, Ca, Mg, K, and N was significantly higher in fallow land than a plantation. The decay of the above-ground and root biomass of fallow vegetation and the presence of native leguminous species among the vegetation have been attributed to increases in soil chemical properties to manage soils for sustainable agricultural development.

KEYWORDS: Fallow soils, Lower slope, Middle slope, Oil palm plantation, Upper slope
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