Articles

Browse our published research articles

409 articles
271
Research Article DOI: 10.67042/njss.2022.kgj5m2wx

Comparative Effects of Two Formulated Agricultural Wastes and Inorganic Fertilizer on the Performance of Tomato (solanum Lycopersicum L.) on a Derived Savanna Alfisol

Aboyeji, C. M*, Akodu, F. O, Ige, S. A

A potted experiment was conducted during the 2020 and 2021 cropping seasons at the screen house of the Research Farm of the Bio-fuel and Alternate Renewable Energy Ltd, Edidi, Kwara State, in the derived savanna of Nigeria, to compare the effects of two formulated agricultural wastes (kola nut pod and cocoa pod) and NPK fertilizer on the performance of tomato. Treatment includes three levels each ...

Apr, 2022 pp. 112-116 162 views 274 downloads
272
Research Article DOI: 10.67042/njss.2011.iijd0fxt

Effect of Heavy Metal Contamination on Microbial Population, Organic Carbon and Nitrogen Mineralization in Soil Planted to Legumes

Soretire A.A.*, ADESODUN Johnson Kayode, Oludemi, B.M.

This study was carried out to investigate the effects of heavy metal contamination on the microbial population, organic carbon and nitrogen mineralization in the soil planted to legumes. Two heavy metals (Zinc and lead) were used at 150 mg kg -1 and 200 mg kg-1 concentrations respectively. Four legumes (Mucuna, Cowpea, Soyabean and Centrosema) were planted in pots filled with 4 kg of 2 mm sieved s...

Aug, 2011 pp. 112-117 159 views 286 downloads
273
Research Article DOI: 10.67042/njss.2026.hmo1ib1r

Assessment of Soil Organic Matter Determination Techniques in Tropical Soils: Correlation Among Four Methods as Indicators of Plant Growth Potential

Toyin Blessing Odelana*, Adedoyin Adepoju, Oladele Abdulahi Oguntade, Babajide Saheed Kosemani, Adebanke Ayooluwa Olubode, Jamiu Oladipupo Azeez

Soil organic matter (SOM) is a key indicator of soil fertility, yet variability among analytical methods limits its reliable interpretation, particularly in tropical soils. This study evaluated four SOM determination methods—Walkley–Black (WB), loss on ignition (LOI), colorimetric (COL), and hydrogen peroxide (HP)—and examined their relationships with maize growth under contrasting parent material...

May, 2026 pp. 113 - 141 145 views 98 downloads
274
Research Article DOI: 10.67042/njss.2020.qbrphk19

Fertility Capability Classification of Soils Supporting Rice Production in Ebonyi State, Southeastern Nigeria

Obasi S. N.*, Obasi C. C.

This research was carried out to characterized and classify fertility capability to enhance the productivity of rice in Ebonyi soils. Ebonyi state was grouped into three zones according to their agricultural zones namely, Ebonyi north, Ebonyi central and Ebonyi south, representing Abakaliki, Ikwo and Ivo locations, respectively. Major rice growing areas of the soils were located and two profile pi...

Aug, 2020 pp. 113-122 176 views 298 downloads
275
Research Article DOI: 10.67042/njss.2021.5prx0a5a

Effects of Conservation Tillage, Phosphorus and Variety on Selected Soil Physical Properties and Cowpea Productivity at Minna in Nigeria’s Southern Guinea Savanna

Odofin A. J.*, Okpoho, N.A., Bala A.

This study was conducted to evaluate the influence of conservation tillage, inorganic phosphorus fertilizer and variety on soil physical properties and cowpea productivity at Minna in the Southern Guinea Savanna of Nigeria. Three tillage practices (zero, reduced and ridged), three phosphorus rates (0, 30 and 60 kg P2O5 ha-1) and three cowpea varieties (IT93K-452-1, IT99K-573-1-1 and IT90K-277-2) w...

Dec, 2021 pp. 114-122 179 views 287 downloads
276
Research Article DOI: 10.67042/njss.2013.58plr77o

Soybean Nodulation and N2 - Fixation as Influenced by Cow Dung, Wood Ash and Rhizobial Inoculation in Tropical Acid Soils (typic Dystrudept )

Soretire A.A.*, Olayinka A.

The effects of cow dung and wood ash applications with and without rhizobial inoculation on modulation, and N2-fixation by soybean (Glycine max (L.) Merrill) were investigated in tropical acid dystrudepts under greenhouse and field conditions. The field experiments were located at Epe and Ijebu-waterside (Ibiade) of Lagos and Ogun States, southwestern Nigeria, respectively. The experiment was a 3 ...

Aug, 2013 pp. 114-125 185 views 264 downloads
277
Research Article DOI: 10.67042/njss.2012.ae10qpa3

Suitability of Extractants for the Determination of Available Sulphur for Groundnut Production in Some Soils of Benue State, Nigeria

B.C. Anjembe*, Adetunji M. T

Occurrence of sulphur deficiency in Nigerian soils is becoming frequent and more extensive due to intensive cultivation and shift from low analysis to high analysis fertilizers which do not contain sulphur. Information is still required on the parameters of evaluating sulphur status and requirement of crops in the country. Studies were conducted in the laboratory, greenhouse and farmers’ fields in...

Apr, 2012 pp. 114-121 179 views 276 downloads
278
Research Article DOI: 10.67042/njss.2018.3h5pkcr1

Effects of Rice Mill Wastes on Soil Properties in a Rice - Producing State of South - Eastern Nigeria

Ifejimalu, A. C*

A research was conducted in 2015 and 2016 in Abakaliki, Ebonyi State, South-eastern Nigeria, to determine the effects of heavy dumping of rice mill wastes on soil properties. Samples were collected from soils in Abakaliki rice mill industry. Auger and core samples were collected from Faculty of Agriculture and Natural Resources Management, FARM (control) and at Abakaliki rice milling industry in h...

Aug, 2018 pp. 115-122 189 views 287 downloads
279
Research Article DOI: 10.67042/njss.2013.i4ncth8w

Determination of Optimum Nitrogen Fertilizer Rates for Aloe Vera Growth, Yield and Nutrient Composition

Owoade F. M.*, Adeoye G. O, Esther Ewetola

Aloe vera (L) Burm. f. is an important medicinal plant with little information on agronomic requirements for its enhanced growth and nutrient composition. Two years field trial was conducted during the 2010 and 2011 planting seasons at the experimental field of the Teaching and Research Farm, Ladoke Akintola University of Technology Ogbomoso, Oyo State. The field trials comprised six levels of nit...

Apr, 2013 pp. 115-119 191 views 418 downloads
280
Research Article DOI: 10.67042/njss.2015.9xu4pr53

Effects of Variation in N:k Ratio in Soils on the Growth, Nutrient Availability and Yield of Maize (zea Mays L. )

Anthonia Osayanmon BAKARE*, I.O. Osemwota

This study was undertaken in two distinct ecological zones of Edo state of Nigeria to determine the effects of variation in the N: K ratio in soils on the availability of N, K and on the growth and yield of maize. The two sites used were Rubber Research Institute of Nigeria (RRIN) Iyanomo (forest) and the Teaching and Research Farm of Ambrose Alli University, Emaudo, Ekpoma (derived savanna). RRIN...

Apr, 2015 pp. 116-124 163 views 261 downloads