Volume 30, Issue 1 (April)

Articles in this Issue

14 articles
1
Research Article

Effect of Particle Size Biochar (rhizophora Racemose) of Red Mangrove on Bacteria Population in Crude Oil - Contaminated Soil.

Teknikio, Jemimah B.*, Tate, Joseph O., Pureaziba, Nelson

Soils contaminated at different levels of crude oil were amended with two- particle-sized fractions of red mangrove biochar [ mm (B1) and 4 mm (B2)] from locally pyrolyzed red mangrove in earthen kiln and incorporated at five different rates (1, 2, 3, 4 and 6 mg ha-1) in the Teaching and Research Farm, Faculty of Agriculture, Niger Delta University, Bayelsa State, were assessed on the fate of bact...

Apr, 2020 pp. 1-7 255 views 566 downloads
2
Research Article

Effect of Biochar on Available Phosphorus Status in Alfisols Derived from Charnockite in Ekiti State, Nigeria

Ilori, A. O. A.,*, Shittu, O. S.,, Ayodele, O. J., Awe, G.O., Oso, A. O.

Biochar, a carbon-rich product of pyrolyzed biomass, has been used as an amend- ment to improve the properties of marginal highly-weathered soils in the tropics characterized by widespread phosphorus (P) deficiency. Alfisols derived from charnockite in Ekiti State are typically deficient in available phosphorus. Two alfisols from Ire-Ekiti and Ijan-Ekiti were amended with 0 (P-only), 5, 10 and 20%...

Apr, 2020 pp. 8-14 286 views 558 downloads
3
Research Article

Biological Nitrogen Fixation and Productivity of Soybean in Maize - Soybean Intercrop Under Tillage and Bradyrhizobium Inoculation on Alfisols of Northern Guinea Savanna, Nigeria

Omeke, J. O.*, Yusuf, A. A, Uyovbisere, O. E., Aliyu, I. A

A field study was conducted in the 2011 cropping season to investigate the effect of tillage and bradyrhizobium inoculation of soybean on biological nitrogen fixa- tion (BNF) and yield components in maize-soybean intercropping systems. Treat- ments comprised of two tillage practices (conventional tillage (CT) and reduced tillage (RT)) as the main plot and bradyrhizobium inoculation at four levels ...

Apr, 2020 pp. 15-24 242 views 627 downloads
4
Research Article

Genotypic Effect of Groundnut on Nodulation, N Fixation and N Balance in the Two Savannahs of Nigeria

Moji K.T*, Jibrin M. J., Umar F. G., Abubakar U. D

Identification of high N-fixing groundnut genotypes and integrating them into the prevailing cereal-based cropping systems can reduce the need for nitrogen (N) fertilizers, thus minimizing their high cost and associated environmental consequences. This study was conducted to estimate the amount of symbiotically fixed N by groundnut genotypes and its contribution to soil N and yield of groundnut. T...

Apr, 2020 pp. 25-35 257 views 547 downloads
5
Research Article

Vegetative Growth and Yield Response of Amaranthus Hybridus to Mycorrhizal Fungi (glomus Mosseae) Inoculation, Organic and Micronutrient Fertilizer Application

Edosa, Ifeyinwa Valerie1*, Ogbemudia, Imasuen E. E, Yaqub A. E, Ogboghodo, I. A

This study was carried out at the Faculty of Agriculture Teaching and Research farm, University of Benin during the early planting season in April 2016 to evaluate the growth response of Amaranthus hybridus and some soil physical and chemical properties as influenced by organic and micronutrient fertilizers, mycorrhizal inoculum. In this experiment four treatments (poultry manure + cow dung + pig ...

Apr, 2020 pp. 36-41 265 views 660 downloads
6
Research Article

Land Suitability Evaluation for Maize Production and Taxonomic Classification of Soils Overlying Undifferentiated Basement Complex in Northeast Nigeria

Kefas, P. K*, Maigida, E, , Ezeaku, P.I., Ofem, K.I, Akwoga, J.A, Ezeaku P

Soil characterization, classification and evaluation provide useful information for the understanding of its different facets, hence their potentials and limitations for crop production. Such information is lacking in the general area of Kona-Jalingo in Taraba State, Nigeria, hence the study to determine the macro-morphological, physical and chemical properties of the soils, classify them up to th...

Apr, 2020 pp. 42-52 233 views 533 downloads
7
Research Article

Effect of Different Organic Composts and Inorganic Fertilizer on Nodulation, Nitrogen Fixation and Grain Yields of Soybean (glycine Max L.) Under Field Conditions

Ogunrewo, O. M*, Olayinka A., Taiwo, L. B, Oyedele, O. A

The study assessed the effects of composted corn wastes, poultry droppings and inorganic fertilizer on the number of nodules, nitrogen fixation and grain yields of soybean (Glycine max L.) under field conditions for 2 seasons. The experiments were conducted in the research sub-station of the Institute of Agricultural Research and Training, (IAR&T), Ilora, Oyo State, South Western Nigeria: (Derived...

Apr, 2020 pp. 63-69 254 views 565 downloads
8
Research Article

Micronutrient Distribution in Soils of Ethiope Region of Delta State, Nigeria

Ojobor, Smart. A.*

Investigation was carried out in Ethiope Region of Delta state, Nigeria to evalu- ate the distribution of micronutrients contents of oxisols. Ten farming communi- ties were purposely selected in the region, and a total of 60 composite samples were collected with the aid of augers at a depth of 0 - 30 cm. The samples were air-dried at room temperature, sieved with 2 mm sieve mess before subjecting ...

Apr, 2020 pp. 70-76 268 views 566 downloads
9
Research Article

Variability of Some Soil Properties Along a Toposequence in a Basaltic Parent Material of Vom, Plateau State Nigeria

Mahmud A. T.*, Hassan I. M, SHEHU Bello Muhammad, Samndi M. A.

Topography influences the distribution of some soil physical and chemical properties. This study assessed some variation in soil properties resulting from the topographic effect on Basaltic parent material at Vom Jos Plateau State in the Southern Guinea zone of Nigeria. Soil samples were collected at an interval of 20m and at depths of 0 to15cm and 15 to 30cm, parcelled, labelled and taken to the ...

Apr, 2020 pp. 77-81 356 views 667 downloads
10
Research Article

Effect of Nypa Fruticans Pruning Regime and Soil Properties on Regeneration of Mangrove Species (rhizophora Racemosa) in Eastern Obolo, Akwa Ibom State

Ogban P. I.*, Ebong, U. P, Dickson, U. S

The study was conducted to evaluate the effect of Nypa fruticans pruning regimes on the regeneration of mangrove (Rhizophora racemosa) at Okorombokho in Eastern Obolo, Akwa Ibom State, Nigeria. The Nypa was pruned at a uniform height of 10 cm and the area protected with used fishing nets against infiltration by Nypa seeds in tidal floods. Mangrove plants of similar height were inter-planted among ...

Apr, 2020 pp. 82-91 263 views 593 downloads
11
Research Article

Soil Organic Carbon Fractions and Aggregation of a Tropical Alfisol as Affected by Plant Residues

ADESODUN Johnson Kayode*, Udom B. E., Abudu O. S., Adejuyigbe C. O.,, Enikuomehin O. A, Thannia B. M, Oke O. O., Olowokere F. A., Oyegoke, C.O,, Mbila M.

Incorporation of plant residues into soil plays a vital role in enhancing the quality of fragile tropical soils. This study evaluated the short-term effect of plant residues of different quality on organic carbon (OC) fractions, carbon management indices and stability of a sandy loam soil with low (< 2%) initial OC content. The residues are Banana clippings (BC), Chromolaena odorata (CO), Leucaena...

Apr, 2020 pp. 92-101 273 views 599 downloads
12
Research Article

Effect of Tillage and Maize - Cowpea Intercrop on Fractal Features of Particle and Aggregate Size Distribution on a Tropical Sandy Loam Soil in Southwest Nigeria

ADESODUN Johnson Kayode*, Udom B. E., Adekunle A. O, Adejuyigbe C. O.,, Atayese M. O., Olowokere F. A., Mbila M., Oyegoke, C.O,

The effects of tillage and cropping pattern on soil aggregation, fractal dimensions and distribution of organic carbon fractions were studied. Treatments were no- tillage (NT), conventional tillage (CT), and four cropping patterns viz: sole maize, sole cowpea, maize-cowpea intercrops and control (no crop). Soil samples were analysed for particle size distribution (PSD), aggregation ratio (AR), mea...

Apr, 2020 pp. 102-110 273 views 527 downloads
13
Research Article

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 sampling technique was employed in locating 3 distinct to...

Apr, 2020 pp. 111-123 281 views 582 downloads
14
Research Article

Restorative Effects of Amendments on Artificially Degraded Soils in the Southern Guinea Savanna of Nigeria

Adaikwu A.O*, F. K. Salako, Busari M. A., Jamiu Oladipupo Azeez

An evaluation of the productivity of degraded alfisols at Makurdi and Otobi, Nigeria, using artificial desurfacing techniques (ADT) was carried out in 2012 and 2013 cropping seasons. The study was a split-split plot experiment arranged in a Randomized Complete Block Design with three replications. The soil was desurfaced at 0 – 5, 0 – 10, 0 – 15, 0 – 20 cm and the undesurfaced soil, 0 cm (control)...

Apr, 2020 pp. 124-132 293 views 544 downloads
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