Articles

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401 articles
361
Research Article DOI: 10.67042/njss.2017.qa64xfw3

Slope Position and Depth Effects on Selected Soil Physical Properties Under Oil Palm (elaeis Guineensis) Plantation

O. O. Olubanjo*, F. U. Maidoh, P.O. Oviasogie

A study was conducted to examine the influence of slope position and depth on soil physical properties in an oil palm (Elaeis guineensis) plantation established on a gently sloping terrain in NIFOR Benin, Nigeria. A line transect was delineated along the slope of the selected plantation. The line transect was 45 m long and 45 m wide. It was divided into three equal slope segments namely, Summit, M...

Apr, 2017 pp. 208-215 570 views 719 downloads
362
Research Article DOI: 10.67042/njss.2017.z4l9oct4

Use of Ash for Soil Fertility Improvement Effect on Cowpea

OJENIYI STEPHEN OLUSOLA*, Oyatoye A., Abdulraheem M. I.

Different rates of wood ash at 0 to 6t/ha were applied to cowpea crop in an experiment carried out at Akure, Southwest Nigeria to study effects of ash on cowpea performance soil and plant nutrients composition. The experimental soil is slightly acidic, low in available P and exchangeable Ca. Ash increased soil pH which increased with the rate of ash. Available P, exchangeable Ca, K and Mg were inc...

Apr, 2017 pp. 216-221 533 views 607 downloads
363
Research Article DOI: 10.67042/njss.2014.rgq094ca

Effect of Cropping System on Soil Profile Nutrient Contents

AWANLEMHEN B.E.*, OJENIYI STEPHEN OLUSOLA

Four soil profile pits were dug under differing cropping systems at Nigerian Institute For Oil Palm Research (NIFOR) experimental plantations in Benin City and chemically analysed. Cropping systems were sole oil palm, oil palm with cassava, oil palm with plantain, and oil palm with coconut. Samples were collected at 0 – 20, 20 – 40, 40 – 60, 60 – 80 and 80 – 100cm depth and analyzed for K, P, Ca, ...

Apr, 2014 pp. 217-220 500 views 691 downloads
364
Research Article DOI: 10.67042/njss.2026.hgzeomup

Comparative evaluation of chitosan-based biopolymer and conventional phosphorus extractants on phosphorus availability, soil pH dynamics, and maize agronomic performance in amended soils

Ganiyu Olawale Bankole*, Adeoba Courage Aghorunse, Festus Adelana, Racheal Ayo Buzugbe, Sheriff Adewuyi, Jamiu Oladipupo Azeez

Phosphorus (P) availability in tropical soils is commonly restricted by strong fixation processes, mainly through adsorption onto iron and aluminum oxides and precipitation with calcium compounds, which significantly reduce its mobility and plant utilization. This study evaluated the effectiveness of chitosan-based biosorbents (nZvFe-CLCB) relative to conventional extractants (Bray-1 and Olsen) in...

Jun, 2026 pp. 219 - 238 264 views 102 downloads
365
Research Article DOI: 10.67042/njss.2013.ojbyixg3

Effect of Land Use and Soil Depth on Soil Phosphorus Fractions

Jamiu Oladipupo Azeez*, Aloba F. O, Ogunwale O. V, Oguntade O. A., Adekunle. I. O, Amusan A. O

The aims of the experiments were to determine the effect of land use and soil depths on soil phosphorus fractions. Soil samples were taken systematically from dug profile pits at 0-20, 20-40 and 40-60 cm. Soil samples were characterized and P fractionation analyses were done in triplicates using standard procedures. Data generated were analysed using Statistical Analyses System (SAS) software. Res...

Aug, 2013 pp. 219-225 477 views 663 downloads
366
Research Article DOI: 10.67042/njss.2016.09da7h22

Effect of Soil Quality Used as Sub - Grade Material and Road Pavement Failure Along the Benin - Ore Road

CHOKOR J.U.*, Ikoba, V.

The Benin –Akure road has undergone various degrees of failures. Road failures (potholes, surface cracks, ruts and depressions, washouts etc.) have a major strain on the economy of the nation as it affects transport of agricultural produce to urban areas.This research was carried out by evaluating the plasticity indices of the brought in soils used for the subgrade material for the road bed as one...

Aug, 2016 pp. 224-231 516 views 629 downloads
367
Research Article DOI: 10.67042/njss.2013.2infol16

Effect of Land Use on the Distribution of Heavy Metals in Abeokuta, Southwestern Nigeria

Jamiu Oladipupo Azeez*, Oladosu S.A.O, Ilori O. E, Omotosho S. M., Onasanya, O. O, Oguntade O. A.

To prevent risks of metal pollution and secure public health, the assessment of the pollutant load of different land use is germane in emerging cities. The study investigated the distribution of water, EDTA and HCl extractable Cd, Pb, Zn, Cu, Cr, Ni and Mn in soils of different land uses in Abeokuta, southwestern Nigeria. It was hypothesized that land use pattern has an effect on the depth distrib...

Aug, 2013 pp. 226-234 522 views 642 downloads
368
Research Article DOI: 10.67042/njss.2017.f4zds7ma

Irrigation Suitability Ratings and Okra Productivity of Some Mid - Benue Trough Soils: a Comparative Analysis

Abagyeh S. O. I*, Ibo P. I., Idoga S.

A detailed soil survey using grid method was conducted to characterize and rate irrigation suitability of soils and relate it with okra productivity under surface irrigation. Two soil profiles were dug at each site and morphologically described. Soils sampled from identified profile horizons were analyzed. Parametric evaluation method using the soil characteristics was employed. A 4×4×4 factorial ...

Apr, 2017 pp. 230-244 499 views 635 downloads
369
Research Article DOI: 10.67042/njss.2013.k3segm35

Changes in Physical Properties of an Ultisol as Influenced by Composted Empty Oil Palm Bunches and Chemical Fertilizer Under Water Stress Conditions

Ovie S.*, Nnaji G. U, P.O. Oviasogie, OSAYANDE P.E., Nkechika A.

A greenhouse study was conducted at the University of Nigeria, Nsukka to evaluate and compare the effects of sole and complimentary use of composted empty oil palm bunch and chemical fertilizer for improvement of soil physical properties under water stress conditions. The experiment was a 3x3x4 factorial in a completely randomized design with three replications. It consisted of 3 factors–irrigatio...

Aug, 2013 pp. 235-251 479 views 656 downloads
370
Research Article DOI: 10.67042/njss.2026.en5g3nqd

Characterization and Classification of Selected Soils Formed on a Planar Surface in Wukari, Nigeria

Yasin Agono Awwal*, Sadiq Fatihu Kabir, Gisilanbe Solomon Adamu, David Janet Emye

This study investigates the properties and variability of selected pedons in Wukari, Nigeria, focusing on their characterization and classification. Field soil profile description and laboratory analyses were conducted to assess morphological, physical, and chemical properties. Soil samples were collected from identified horizons and analyzed for selected properties. Genetic classification was per...

May, 2026 pp. 239 - 256 238 views 128 downloads