Articles

Browse our published research articles

381 articles
271
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. 117-123 309 views 304 downloads
272
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. 117-125 277 views 530 downloads
273
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. 117-124 264 views 606 downloads
274
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. 118-124 320 views 620 downloads
275
Research Article

Agronomic Potentials of Boiler Ash Derived from Oil Palm Wastes as Fertilizer, Soil Amendment, and Liming Materials

Ezema Raymond Anikwe*, Asadu Charles Livinus, N. A. Onunka, Ifejimalu, A. C

One potential problem with recycling power plant ashes is its variability both from fuel to fuel and within a certain fuel-type. This study obtained information on the main components of ashes derived from burning oil palm mill wastes in boilers for energy generation to obtain reference data for the development of its utility possibilities with particular emphasis on use as fertilizer, soil amendm...

Apr, 2021 pp. 118-123 247 views 642 downloads
276
Research Article

Agronomic and Economic Evaluation of Different Conservation and Conventional Farming Practices on a Sandy Clay Loam Soil at Minna, Nigeria

Odofin A. J.*, Kaure I. G., Tanko L., Eneje R. C

Field trials were carried out in 2008 and 2009 cropping seasons to compare manual ridging (control) with ten conservation and conventional farming practices. The zero tillage treatments recorded significantly higher penetration resistance than manual ridging in both years. In terms of soil moisture content, seedling emergence, plant height, grain yield and stover + grain yield, however, the contro...

Aug, 2011 pp. 118-128 309 views 603 downloads
277
Research Article

Effect of Organic Manure Source and Time of Application on the Field Performance and Nutrient N Uptake of Ginger in the Guinea Savanna

Nwaogu E.N.*, Nwauzor E.C, Mohammed M.

The influence of organic manure from different sources applied at different time intervals before planting on the rhizome yield and nutrient N uptake of ginger was evaluated in 2009 and 2010 cropping seasons at the National Root crops Research Institute, Umudike. Treatments consisted of organic manure from three sources (Poultry manure, Rice mill waste and Cow dung manure) factorially combined wit...

Apr, 2013 pp. 120-123 395 views 704 downloads
278
Research Article

Comparative Potential Effects of Biochar, Compost and Inorganic Fertilizer on Major Nutrient Ions Mobility and Stability in Screen - House Irrigated Maize in the Drier Savannas of Nigeria

Dawaki M. U.*, Aliyu Abdulqadir, Bassam Abdulrahman Lawal

A screen-house experiment was conducted in the dry season of 2017 to evaluate the potential effect of organic and inorganic soil amendments on the mobility and stability of significant plant nutrient ions. 5 t ha-1 compost or Biochar were applied to pot-grown maize to compare their effect with NPK at the rate of 120: 60: 60 kg ha-1 and a control. Soil solution was sampled with lysimeters at varyin...

Aug, 2019 pp. 122-132 329 views 588 downloads
279
Research Article

Biochar and Composted Poultry Manure Causes on Immobilization and Migration of Heavy Metals in Maize Plants Beside a Mining Site.

Okoro, I. G.*, Nwachukwu, O. I

Mining sites in Amagu-Enyigba Ebonyi state Nigeria have deposits of heavy metals especially lead and zinc. Most crops grown in such sites are always hyperaccumulators of these metals. It is against this backdrop that the present study was conducted. The study aimed to ascertain the effect of biochar and composted poultry manure in immobilizing metals in the soil and subsequent reduction in maize u...

Dec, 2021 pp. 123-130 248 views 528 downloads
280
Research Article

Effect of Organic Soil Amendments on Soil Chemical Properties in Sudan Savannah of Nigeria

Aliyu Abdulkadir*, Mansur U. Dawaki, Mahmud Sani

Composite soil samples were collected from irrigated maize fields, to study the effect of Bio char and Compost on post-harvest soil chemical properties in the Sudan Savannah of Nigeria. Laid on a completely randomized block design, the treatments used in the experiment were 5tha-1 Bio char, Compost, and Control. Pre-amendments application and post maize harvest soil characteristics obtained from l...

Aug, 2020 pp. 123-128 309 views 526 downloads