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401 articles
371
Research Article DOI: 10.67042/njss.2016.d4w44ui1

Pedological Study of Soils Developed on Granodiorite in Biase Local Government Area of Cross River State, Nigeria

Aki, E. E.*, I. E. Esu, Akpan-Idiok A. U.

Morphological, physico-chemical and mineralogical properties of soils derived from Granodiorite of Biase, Cross River State, Nigeria were studied with a view to classifying the soil taxonomically, assessing their potentials and suggesting appropriate management strategies. Three profiles were dug on the landscapes of Ikot-Okpara, Betem and Ehom. The micro-morphological properties of soil colour, s...

Aug, 2016 pp. 242-253 490 views 209 downloads
372
Research Article DOI: 10.67042/njss.2017.994i363b

Maize Growth and Yield Components as Influenced by Different Sources of Organic Fertilizers

Ayoola O.T.*, Adebayo A.K

A trial was conducted on field between May – September, 2010 in two agroecologies of South West, Nigeria to determine the effect of different organic based fertilizer source on growth and yield components of different maize varieties. The experiment was laid out in Randomized Complete Block Design in split plots arrangement replicated four times. The maize varieties served as the main plot (Obatam...

Apr, 2017 pp. 245-254 505 views 668 downloads
373
Research Article DOI: 10.67042/njss.2013.so1drbt8

Evaluation of Some Sandstone Derived Soils of Southern Nigeria for Rubber (hevea Brasiliensis )cultivation

Orimoloye J. R.*, Akinbola G. E.

Some soils derived from crustaceous sandstones at Iyanomo, Edo State, Southern Nigeria were mapped, characterised and evaluated for rubber cultivation, using local, USDA Soil Taxonomy and FAO systems. Conventional parametric and non-parametric land suitability evaluation systems as well as weighted parametric approach in Geographic Information System (GIS) methods were used to generate suitability...

Aug, 2013 pp. 252-263 478 views 569 downloads
374
Research Article DOI: 10.67042/njss.2016.vcz1lyyd

Characterization of Biochar Produced from Diverse Feedstocks Used as Amendment on Acidic Ultisols at Umudike, Abia State.

Onwuka, M.I.*, Nwangwu B.C

Biochar is used as a soil amendment to improve soil nutrients for crop production. The nutrient contents of biochar depend on the type of feedstock, pyrolysis types and temperature among others. In this study, it was hypothesized that biochar produced from different feedstock at the same temperature will have different effects on soil properties. To verify this, a pot experiement was set up at the...

May, 2016 pp. 254-264 645 views 627 downloads
375
Research Article DOI: 10.67042/njss.2017.dpbgb3qc

Suitability Assessment of Soils of Nifor Sub - Station Ohosu Edo State for Oil Palm (elaeis Guineensis Jacq.) and Coconut (cocos Nucifera) Cultivation

Oko-Oboh E.*, Senjobi B.A., AJIBOYE G. A., Oviasogie P.O, AWANLEMHEN B.E.

The need for appropriate and maximum utilization of available agricultural lands on sustainable basis cannot be over emphasized. Hence, this study was conducted to investigate the suitability of the soils of NIFOR sub-Station Ohosu in Ovia South West Local Government Area, Edo State, Nigeria for both oil palm and coconut cultivation. Data from five pedons covering 2,100 hectares were used followin...

Apr, 2017 pp. 255-266 584 views 622 downloads
376
Research Article DOI: 10.67042/njss.2026.azj0vlth

Microplastic Contamination Alters Soil Hydraulic Properties and Inhibits Maize Growth: A Factorial Assessment Across Contrasting Soil Textures.

EJI EJOR TANGBAN*, OGUIKE, P. C., NNAJI, G. U., BENJAMIN, J. I.

Microplastic pollution in agricultural soils constitutes an emerging threat to food security, yet the interactive influence of soil texture and contamination intensity on crop productivity remains inadequately characterized. A 3 × 4 factorial pot experiment was conducted under controlled conditions at Bendeghe Ekiem, Cross River State, Nigeria, to evaluate the combined effects of high-density poly...

May, 2026 pp. 257 - 275 192 views 74 downloads
377
Research Article DOI: 10.67042/njss.2013.z0xdfqr2

Heavy Metals Accumulation in Soil and Amaranthus Cruentus L Irrigated with Dye Effluent Polluted Stream Water in Abeokuta, Southwest Nigeria

O. A. Oguntade*, M. T. Adetunji, F. K. Salako, T. A. Arowolo, Jamiu Oladipupo Azeez

This study evaluated the quality of Amaranthus cruentus irrigated with dye effluent polluted stream and water from a deep hand-dug surface well (well-water). It also assessed the levels of heavy metals including Manganese, Iron, Copper, Zinc and Chromium in soil and amaranths irrigated with the waters in two dry seasons. The results showed that the pH (9.67) and NO3- (226.76 mg L-1) contents of th...

Aug, 2013 pp. 264-275 533 views 635 downloads
378
Research Article DOI: 10.67042/njss.2016.gvmgf4in

Effect of Nitrogen and Micronutrients on Grain Yield of Maize Varieties in the Northern Guinea Savanna Alfisol.

B. T. Olowookere*, Uyovbisere E, OJENIYI STEPHEN OLUSOLA

Field experiments were conducted in 2008 and 2009 in the Guinea Savanna ecology of Nigeria to investigate the effects of nitrogen fertilizer and micronutrients on the grain yield of two quality maize and two normal maize varieties. The treatments were four rates of inorganic fertilizer N (0, 50, 100, 150 kg Nha-1) and two rates of cocktail micronutrient mixtures. These were tested in a Randomized ...

Apr, 2016 pp. 265-271 495 views 650 downloads
379
Research Article DOI: 10.67042/njss.2026.6hpi2j3q

Soil Physical and Chemical Spatial Patterns under Land Use Intensification in a Nigerian Protected Area

Adesina Abudlkabir Wahab*, Kabir Kayode Adebayo, Toyeeb Abayomi Abioye, Yusuf Folorunso Abdulkareem

Population growth, food demand, and low farm income drive landuse intensification and encroachment into protected areas. Landuse intensification within protected landscapes alters soil physical and chemical properties with implications for ecosystem stability. This study quantified soil variability across four land-use types (LUTs): long-term reserved forest (>10 years; RAG), recently reclaimed re...

Jun, 2026 pp. 276 - 293 163 views 85 downloads
380
Research Article DOI: 10.67042/njss.2013.mvzx9jkf

Nutrients Concentration and Root Count of Cassava as Influenced by Residue and Npk Fertilizer

Babadele D.O.*, OJENIYI STEPHEN OLUSOLA

Experiment was conducted at two sites Ayegunle and Oka in South-West Nigeria to study effect of combined plant residues sawdust ash (SDA) and siam weed (Chromolaena odorata) (CR) and NPK (15:15:15) fertilizer on leaf N, P, K, Ca and Mg of Cassava. The parameters were evaluated at 3,6,9 and 12 months after planting (MAP) for nutrient concentrations and root count of cassava. The test soils are sand...

Aug, 2013 pp. 276-281 514 views 617 downloads