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379 articles
11
Research Article

Seasonal Inventory of Heavy Metals on Vehicular Polluted Soils and Roadside Distance Supporting Arable Crop Production in Umuahia Metropolis, Nigeria

Eteng E. U.*

This study was conducted between February and September, 2018 to evaluate heavy metal concentrations of road dust soils supporting arable crop production along five major roads connecting the Umuahia Metropolis to surrounding cities. Thirty soil samples from five major roads were collected during the dry and wet seasons at 10 m, 20 m and 30 m distances from road edges. The heavy metals were analyz...

Apr, 2019 pp. 1-9 239 views 541 downloads
12
Research Article

Geospatial Distribution of Some Phosphorus and Potassium Forms as Influenced by Period of Irrigation in the Kano River and the Hadejia Valley Irrigation Schemes, Nigeria.

Dawaki M. U.*, Haruna K. A., Samndi A. M.

This study was carried out at Kano River Irrigation Project (KRIP) (latitudes 11º 36ʹ 0.05ʺ N to 11º 49ʹ 57.97ʺ N and longitudes 8º 28ʹ 17.02ʺ E to 8º 29ʹ 41.82ʺ E) and Hadejia Valley Irrigation Project (HVIP) (latitudes 12º 17ʹ 48.75ʺ N to 12º 24ʹ 58.28ʺ N and longitudes 9º 51ʹ 31.29ʺ E to 10º 2ʹ17.42ʺ E). The soils are largely deep, well-drained Calcic Luvisols. The aim was to assess the geospat...

Aug, 2018 pp. 1-11 271 views 539 downloads
13
Research Article

Some Physical Properties of Soils Overlying Limestone Parent Material in Southeastern Nigeria

Aki, E. E.*, Antigha, N.R.B.

The physical properties of nine (9)pedons of soils derived from limestone parent materials in South Eastern Nigeria were investigated. The percentage of total sand generally decreased with increase in profile depth with total sand for the surface horizons of 61% and 47% for the subsurface hori- zons. Silt percentage for the surface horizons range between 7.0 % and 48%, for subsurface 7.0% and 48%....

Apr, 2015 pp. 1-7 285 views 590 downloads
14
Research Article

Characterization and Classification of Obudu Mountains Steep Hillside Soils.

ESSOKA A. N.*, ESSOKA P. A

Soil characterization helps us understand soils better which leads to their classification into categories. The steep hillside soils of three Obudu mountain ranges were selected for profile study for their morphological and physicochemical properties at Belekete, Bottom Hill and Belinge. The soils were well-drained and deeply weathered. The mean percentage of sand, silt and clay were 54 %, 59 % an...

Apr, 2014 pp. 1-12 279 views 950 downloads
15
Research Article

Assessment of Dithionite and Oxalate Extractable Iron and Aluminium Oxides in Soils Supporting Raphia Palms at Nifor Main Station

OSAYANDE P.E.*, P.O. Oviasogie, Aisueni N.O., Stephen O., Irhemu P., EKEBAFE M.O

The oxides of iron and aluminium are known to affect the physical and chemical properties of soils such as ion adsorption, aggregate stability, phosphorus sorption and charge characteristics. This study was conducted to provide information on the status of free oxides in both soils of the Inland Valley and a well drained Upland soil at the NIFOR main station. Twenty four (24) representative sample...

Aug, 2013 pp. 1-9 255 views 529 downloads
16
Research Article

Assessment of the Metallic Micronutrient Elements in the Benchmark Soils of Savanna Regions, North - East Nigeria

J. M. Wapa*, B. T. Olowookere

The status of metallic micronutrient elements extractable in 0.005M DTPA was assessed in 31 locations across the North-east Nigeria which comprises of six states (Adamawa, Bauchi, Borno, Gombe, Taraba and Yobe). Composite surface (0-20cm) and sub-surface (20-50cm) soil samples were collected from areas having different parent materials, vegetation zones and soil texture. The soil samples were anal...

Apr, 2013 pp. 1-9 276 views 559 downloads
17
Research Article

Influence of Sodium and Potassium Fertilizers on Growth and Nutrient Contents of Tomato Plant in South Western Nigeria

Idowu M. K*

The influence of sodium (Na) and potassium (K) on growth and nutrient content of tomato was investigated on the field between 2003 and 2004 at the Teaching and Research Farm, Obafemi Awolowo University. The experiment was a 4 x 3 factorial arranged in Randomized Complete Block Design (RCBD) with three replications. The factors and levels were 0, 4, 16 and 32 mg Na kg-1 soil and 0, 64 and 128 mg K ...

Aug, 2011 pp. 1-12 344 views 565 downloads
18
Research Article

Changes in Soil Physical Properties Due to Variable Weather Conditions Under Two Soil Types in South Western Nigeria

Ologunde O.H.*, Adebayo O.E., Busari M. A.

Soil physical properties changes with weather conditions over time. The degree of variation might be influenced by different soil textural classes. This study aimed at understanding the changes in soil physical with varying weather conditions under two soil textures. The research was conducted in cassava fields at the Federal University of Agriculture, Abeokuta and Psaltry International Limited, I...

Apr, 2023 pp. 6-14 3 views 2 downloads
19
Research Article

Influence of Land Use on Soil Physiochemical Properties in Semi - Humid Nsukka Area of Southeast - Ern Nigeria

Umeobi E. C*, , Ezeaku, P.I., Umeugokwe C. P, Ezeaku, V. I

The influence of four land uses (cultivated arable land, grassland, oil palm planta- tion and rubber plantation) on physical and chemical properties of coarse- textured acid soils was assessed in the semi-humid Nsukka area. Soil auger and core samples were used to achieve surface sampling at the depth intervals of 0-20 and 20-40cm in each land use type. Four diagnostic horizons were identified and...

Dec, 2021 pp. 6-17 290 views 557 downloads
20
Research Article

Use of erodibility indices in assessing soil erosion in central and northern Cross River State, Nigeria

Akpa E A*, Okon P O, Abam P O, Sunday L. K

Soil erodibility indices were used to assess erosion prone areas in central and northern Cross River State, Nigeria. Fourteen (14) composite soil samples were collected at a depth of 0-30 cm and analyzed using standard laboratory procedures. Results showed that the soils are coarse textured with high sand content dominated by textural class of loamy sand in both the central and northern. The vulne...

Aug, 2025 pp. 7-14 505 views 698 downloads