Articles

Browse our published research articles

389 articles
271
Research Article

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. 114-121 376 views 584 downloads
272
Research Article

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. 115 - 143 19 views 11 downloads
273
Research Article

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. 115-122 428 views 653 downloads
274
Research Article

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

Owoade F. M.*, Adeoye G. O, Ewetola E. A

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. 115-119 390 views 676 downloads
275
Research Article

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

A. O. 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. 116-124 346 views 577 downloads
276
Research Article

Evaluation of Farmyard Manure and Urea on Growth, Yield and Cost Benefits of Rice (zea Mays L) (oryza Sativa L) in Southern Guinea Savanna, Nigeria

Olowoake A.A.*, Afe, A.I., Ojo, J.A, Yusuf, T. M., Subair, S.K.

Chemical fertilizers are become more and more expensive, making them unaffordable for smallholder farmers in Nigeria. This study compared the combined effects of farmyard manure and inorganic fertilizers (prilled and granular urea) on growth, yield and cost benefits of rice. Field experiments were carried out in two locations (Malete and Shao) Kwara State, Nigeria during 2018 and 2019 cropping sea...

Aug, 2022 pp. 117-124 384 views 567 downloads
277
Research Article

Application of Semivariogram Model to Quantify Spatial Variability of Soil Properties in a Forested Tropical Soil.

Obidike-Ugwu E. O.*, Ogunwole J. O., Odunze Azubuike Chidowe, Nwafor O. E., Ariwaodo J. O.

Accurate evaluation of spatial variability of soil properties is one of the key components of ecosystem management. The conventional analytical and semivariogram methods were used to analyze data to quantify the potential of the semi-variogram model for measuring soil properties and their spatial variability in a tropical forest ecosystem. A total of 100 soil samples were collected through a 300 m...

Apr, 2022 pp. 117-123 448 views 363 downloads
278
Research Article

Influence of Tillage - Seedbed and Manure - Npk - Micronutrient Management Options on Selected Soil Properties of Sandy - Loam Ultisols Evaluated Using Sweet Potato

Obalum S.E*, , Ogumba P.O., Uzoh I .N

This study assessed the effects of tillage and nutrient management practices on selected soil properties of degraded coarse-textured Ultisols and responses of sweet potato in Nsukka, southeastern Nigeria. It involved three tillage-seedbed types viz zero-tilled flatbed (ZT-FB), conventionally tilled-flatbed (CT-FB) and conventionally tilled tie-ridge (CT-TR), each with seven soil fertilizer amendme...

Dec, 2020 pp. 117-125 385 views 576 downloads
279
Research Article

Soil Fertility Assessment of a Shea (vitellariaparadoxa C.f. Gaertn ) Field at Bida, Niger State

OSAYANDE P.E.*, P.O. Oviasogie, AWANLEMHEN B.E., Orhue E. R.

Knowledge of the fertility status of soils is basic to managing them for optimum crop production. Fertility status of a cultivated Shea (Vitellaria paradoxa C.F. Gaertn) field was assessed at Bida, Niger state. Soil samples were collected using auger and core methods, air-dried, sieved with a 2- mm sieve and analyzed for physical and chemical properties in the laboratory using standard methods. Th...

Apr, 2014 pp. 117-124 353 views 647 downloads
280
Research Article

Dynamics in Physico–chemical Properties of Soils Under Oil Palm Plantations of Different Ages

Olufemi Adewale Osinuga*

This research investigated the changes in the physicochemical properties of soils under oil palm plantations of different ages. Soil surface (0-20 cm) and subsurface (20-40 cm) samples have been obtained from various ages of oil palm plantations (0-5, 5-10, 10-15 and, 15-20 years). Two distinct samples were taken on the same farm, under alleys and heaped pruned fronds. Soil samples used as a stand...

Aug, 2021 pp. 118-124 413 views 662 downloads