Volume 30, Issue 3 (December)

1

Research Article DOI: 10.67042/njss.2020.cep89cvl

Effect of Land - Use on Particulate Organic Carbon and Carbohydrates Distributions in Dry - and Wet - Sieved Stable Aggregates in an Ultisol

Udom B. E.^*, Simon U. G.

Particulate organic carbon (POC) and carbohydrates (R-CHO) distributions in dry- and wet-sieved aggregates in four land-use types in southern Nigeria were studied. The land-use types were: secondary forest, 5-year fallow plots, cocoa plantation, and 5-year continuous cultivation. The results showed that land types affected soil organic carbon fractions, soil organic carbon density, bulk density, a...

Dec, 2020 pp. 1-8 518 views 366 downloads

2

Research Article DOI: 10.67042/njss.2020.nn3ofyau

Assessment of the Responsiveness of Soybean Varieties to Bradyrhizobium Japonicum Inoculation in Ogbomoso, Southwest Nigeria

Olaboopo, M. T., Kolawole, G. O.^*

Soybean varieties may respond differently to rhizobium inoculation, for im- proved yield and nitrogen fixation. Therefore, responses of ten soybean varieties to rhizobium were evaluated in 2018 at the Ladoke Akintola University of Tech- nology, Ogbomoso, Nigeria, to determine if rhizobium will improve the perfor- mance of the varieties. The soybean varieties (main plot) and rhizobium (+ or -, subp...

Dec, 2020 pp. 9-16 523 views 683 downloads

3

Research Article DOI: 10.67042/njss.2020.0ix1m8r8

Impact of Land Use System on Soil Quality in Southwest Nigeria

Amosu, S. A.^*

A soil quality (SQ) evaluation was conducted on three different farm locations in the Ijebu-Igbo region of Ogun State Nigeria to ascertain the health status of the soils. The farmlands have been subjected to different land use systems (LUS) for over ten years including plantain/banana orchard, arable farming and fallow/secondary forest. Soil samples were obtained at 0-30 cm and 30-60 cm depths fro...

Dec, 2020 pp. 17-22 498 views 677 downloads

4

Research Article DOI: 10.67042/njss.2020.2jmnjdds

Micronutrient Status of Grain Size Fractions in Soils of Land Uses in Mbano, Southeastern, Nigeria

Bethel Ugochukwu Uzoho^*, Irokwe I. F.

Micronutrient status in grain size fractions provides information on the active soil fraction and the ability for stabilization against microbial decomposition. Total, available, exchangeable and water-soluble Fe, Zn,Cu and Mn in bulk and grain size soil fractions were evaluated in three landuse types (Cassava, Cashew and Oil palm) in Ehime Mbano, Southeastern, Nigeria. Also, selected soil propert...

Dec, 2020 pp. 23-30 521 views 678 downloads

5

Research Article DOI: 10.67042/njss.2020.ke5tbeal

Effects of Land Use on Forms of Phosphorus in Coastal Plain Sands of Nigeria

Jude Obi^*, Ibia, T. O, Ikott, I. E.

This research studied the effect of land uses changes on the forms of phosphorus within the coastal plain sands landscape of southeastern Nigeria. Satellite imageries and soil data including phosphorus fractions were used for the study. Spatial coverage of forest and agricultural (fallow and farmland) land uses, accompanying soil properties and forms of phosphorus were estimated. There was progres...

Dec, 2020 pp. 31-41 549 views 581 downloads

6

Research Article DOI: 10.67042/njss.2020.liwgkocg

The Impact of Land Use Types and Acidity Indices on Soil Humic Fractions Quantities at Umudike, Tropical Rainforest, Nigeria

Mabel Ifeoma Onwuka^*, Okonta, U, Asobia, P. C.

Natural humic fractions deposited in the soil are most times sources of industrial humic substances use for crop production. However, the quantities of the humic substances, which are components of soil organic matter, are affected by lots of factors and processes, including land- use. The effects of different land- use and soil acidi0ty indices on the quantity of soil humic fractions at Umudike, ...

Dec, 2020 pp. 42-52 570 views 643 downloads

7

Research Article DOI: 10.67042/njss.2020.o60vbhhc

Comparison of the Characteristics of Soils of Isolated Forests and Adjacent Grasslands in Nsukka Area of Enugu State, Nigeria

Asadu, C.L.A^*, Odugu C.

The soils of isolated forests on hilltops and the surrounding grasslands in three locations at Ashor Hill, AttabaHill, and Umuowo Hill, all in Nsukka area were comparatively characterized. Two auger samples were collected (0-20 and 20-40cm) from each vegetation type per location giving a total of 12 auger samples while two profiles pit each were dug, described and sampled. In all, 24 samples were ...

Dec, 2020 pp. 53-61 524 views 682 downloads

8

Research Article DOI: 10.67042/njss.2020.l8f1exqs

Suitability of Urban Waste Land Use in Relation to Heavy Metal and Micronutrient Influence on Soil and Green Amaranth Production in Southeast Nigeria

Ezeifeka A.O^*, , Ezeaku, P.I., Ezeaku, V. I, Anikwe M. A. N, Kefas, P. K, Ofem, K.I

An assessment of the impact of long term (>20 years) MSW disposal on soil properties and their suitability for crop productivity was carried out in Anambra and Enugu States of southeast Nigeria. Four dumpsites were selected (two in each state) and, 12 soil auger samples (2 sampling points at 3 depths and 2 repeated measures) each were collected at incremental depth intervals of 0-20, 20-30, and 30...

Dec, 2020 pp. 62-69 509 views 645 downloads

9

Research Article DOI: 10.67042/njss.2020.97nqvhaw

Impact of Land Use on Spatial Distribution of Soil Nutrients in Akure North and Akure South Local Government Areas of Ondo State, South West Nigeria

Dada B. F^*, Ewulo Babatunde Sunday, Awodun M.A., Ajayi S.O., Olajire O.O.

Land use has great impacts on the distribution of nutrients in soils, Anthropogen- ic activities and recorded increase in population density in the study area is ex- pected to lead to great changes in the soil spatial nutrients distribution, data on the spatial distribution of nutrients in Akure North and South Local Government Area (LGA) of Ondo state is scarce, therefore it is important to fill ...

Dec, 2020 pp. 70-79 498 views 619 downloads

10

Research Article DOI: 10.67042/njss.2020.px3f58n4

Land Suitability Evaluation and Management of Ultisols for Some Tree Crops Cultivation in South South Nigeria

Okunsebor F. E^*, Umweni A. S.

A rigid grid soil survey was done on 115.5 hectares of land in Ultisols of South Southern Nigeria at a detailed scale to evaluate its suitability for the cultivation of some tree crops (Cocoa, Plantain, Cashew, Pawpaw and citrus). Mapping units were delineated on the basis of morphological characteristics examined at 100 m along traverses which were cut at intervals of 100 m from a predetermined b...

Dec, 2020 pp. 80-87 509 views 605 downloads

11

Research Article DOI: 10.67042/njss.2020.v8o9zfyj

Impact of Land Use/cover on Carbon Sequestration in Afaka Forest Reserve, Northern Guinea Savanna of Nigerian

Ibrahim Abdulwahab Jimoh^*, Sulaiman Yau Lawan, Odunze Azubuike Chidowe, Sawa, B.A,

This study aims to assess the impact of land use/cover on carbon sequestration in Afaka Forest Reserve. Six (6) land use/cover types were delineated and used in the study area. This includes Eucalyptus plantation (EP), Farmland (FL), Gme- lina plantation (GP), Mixed plantation (MP), Natural plantation (NP) and Teak plantation (TP). A profile pit was dug in the middle of each of the delineated land...

Dec, 2020 pp. 88-94 543 views 726 downloads

12

Research Article DOI: 10.67042/njss.2020.c1bog97v

Evaluation of Soil Development on an Erosional Landscape of the Nigerian Guinea Savanna

Ayodele Owonubi^*

Soil landscape relationship is an essential tool for evaluating soil development. This study was carried out to evaluate soil development on an erosional land- scape of the Nigerian guinea savanna. Field studies were carried out by augering to a depth of 105 cm and by studying soil profiles along gully walls and stream channels in selected locations. Profile description and soil sampling were done...

Dec, 2020 pp. 95-99 523 views 666 downloads

13

Research Article DOI: 10.67042/njss.2020.znc5bc25

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...

Dec, 2020 pp. 100-105 461 views 698 downloads

14

Research Article DOI: 10.67042/njss.2020.0i0z3fcs

Effects of Tillage and Fertilizer on Soil Properties and Yield of Sesame Varieties in Makurdi, Nigeria

Usman, M.^*, A. Ali, Agber, P.I.

Field experiments were undertaken during the cropping seasons (August- December) of 2018 and 2019 at the Teaching and Research Farm, Federal University of Agriculture, Makurdi-Nigeria. The objective of the study was to determine the effects of tillage and fertilizer on soil properties and yield of sesame varieties with a view to identify appropriate tillage practice (s) and fertilizer rate that wi...

Dec, 2020 pp. 106-116 625 views 692 downloads

15

Research Article DOI: 10.67042/njss.2020.e6v1qv5a

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

Sunday Ewele OBALUM^*, , 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. 117-125 520 views 651 downloads