Okoli N. H

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Research Article Vol. 35, Issue 2

Optimization of Rice Hull Bokashi Application Rates for Improving Soil Properties and Performance of Pepper (Capsicum spp) under Tropical Conditions in Owerri Nigeria

AHUKAEMERE C.M.^*, Amarachi Orji, Onwudike S U, Okoli N. H, Ekejiuba C I, Obasi S. N., Osujieke D.N., Nkwopara, U. N., Agim L C, Nnah M

Food insecurity, waste disposal, soil degradation and low agricultural productivity remain major challenges in Nigeria. This work was carried out to evaluate the characteristics of fermented Rice Hull-Bokashi (RH-B) and its effects on soil and pepper (Capsicum spp.) performance. The fermentation process lasted for 12 days, during which, temperature...

Nov, 2026 Vol. 35, Issue 2 4 views 2 downloads

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Research Article Vol. 32, Issue 2

Effect of Oil Palm Cultivation on the Micronutrient Status of Soils in a Coastal Plain Sands Area of Akwa Ibom State, Nigeria

Chukwu E. D^*, B. T. Udoh, Nnabuihe, E, Okoli N. H, Osisi A. F

High levels of micronutrients may cause metabolic disorders and become growth inhibitors to most plant species. Therefore, the study assessed the levels of micronutrients in soils under oil palm cultivation in a coastal plain sands area of Akwa Ibom State, Nigeria. Three oil palm blocks of varying ages, l7 years (B-17), 39 years (B-39) and 57 years...

DOI: 10.67042/njss.2022.0g2ja75s

Aug, 2022 Vol. 32, Issue 2 199 views 265 downloads

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Research Article Vol. 32, Issue 1

Magnesium Forms in Bulk and Grain Size Fractions of Soils of Contrasting Land - Uses in Imo State, Southeastern Nigeria

Bethel Ugochukwu Uzoho^*, Irokwe I. F., Okoli N. H

Magnesium contents in bulk and grain size soil fractions from 2 soil depths (0-20 and 20-40 cm) of 5 land uses (Yam, fluted pumpkin, cassava, pineapple and plantain) in three locations (Amuzari, Umuaka and Ngor-Okpala) in Imo state were evaluated. Total, mineral/structural, acid extractible/non-exchangeable, exchangeable, water-soluble and availabl...

DOI: 10.67042/njss.2022.9bsn34lv

Apr, 2022 Vol. 32, Issue 1 178 views 293 downloads

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Research Article Vol. 30, Issue 1

Classification and Fertility Status of Soils on Slopes of Varying Orientations in Umuahia Area of Abia State, Nigeria

Aliba, V.O.^*, Onweremadu E. U, Aririguzo, B. N, Okoli N. H

The slope orientation and position of toposequence influence soil properties along the landscape. The study classified and evaluated the fertility status of soils on slopes of varying orientations in Umudike (East-lying Toposequence) and Itu (West-lying Toposequence) located in Olokoro Umuahia, Abia State southeastern Nigeria. Transect soil samplin...

DOI: 10.67042/njss.2020.0wccloai

Apr, 2020 Vol. 30, Issue 1 186 views 294 downloads

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Research Article Vol. 27, Issue 1

Status of Available Micronutrients in Soil Profiles of Different Parent Materials in Imo State, Southeastern, Nigeria

Okoli N. H^*, Bethel Ugochukwu Uzoho, Onweremadu E. U, AHUKAEMERE C.M., Osisi A. F, Aliba E.O.

The status of available Zn, Cu, Ni and Fe was studied in four representative soil profiles of different parent materials (Coastal Plain Sands, Alluvium, Falsebedded Sandstones and Imo Clay Shale) in Imo State, Southeastern Nigeria. Sample collection was guided by horizon differentiation. Available Zn, Cu, Ni and Fe were evaluated using double acid ...

DOI: 10.67042/njss.2017.xf9qksm0

Apr, 2017 Vol. 27, Issue 1 199 views 268 downloads

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Research Article Vol. 27, Issue 1

Forms of Primary Nutrient Elements in Soils Overlying Contrasting Parent Materials in South - Eastern Nigeria

AHUKAEMERE C.M.^*, Bethel Ugochukwu Uzoho, Ndukwu, B., Onwudike S U, Okoli N. H, Irokwe I. F.

Appropriate management of soil fertility should rely upon sound knowledge of the nutrients reserve and their availability. This is only possible if there is adequate information on the influence of parent material on the dynamics and availability of these nutrient elements. Research was carried out in 2014 at three locations underlain by three diff...

DOI: 10.67042/njss.2017.qxqtocip

Apr, 2017 Vol. 27, Issue 1 197 views 255 downloads