Research Papers/Topics in Soil Science

Heavy Metals Content In Soils In The Vicinity of Refuse Dumpsites In Calabar South, LGA

 ABSTRACT This study was done to evaluate the risk of heavy metals pollution of soils within the vicinities of refuse dumpsites in Calabar south, LGA. Soil samples were collected from a depth of 0-20cm with the use of a soil auger from ten (10) dumpsites using the stratified sampling method.  The samples were well labelled in polythene bags and transported to the laboratory where it was air-dried and subjected to physico-chemical analysis. Heavy  metals such as lead (Pb), cadmium (Cd), c...

Assessment of Crude Oil Degradation and Hydrocarbon Utilizing Bacteria Associated with Some Beach Soils in Ghana

ABSTRACT Ghana discovered oil in 2007 at Cape Three Point in the Western Region. It experienced its first low-based mud oil spillage in 2009 and 2010. Ghana is therefore exposed to possible oil spillage due to oil production in commercial quantities. It is against this background that the present study is aimed to assess the degradation along the coast and identify hydrocarbon utilizing bacteria (HUB) associated with some beach soils. The beach soils were taken from eight coastal towns; Afla...

Effects of Fertilizer, Lime and Organic Manure on the Nodulation and Growth of Soybean (GLYCYNE MAX(L) MERRILL) in South Eastern Nigeria

A BST RA CT Green house experiment was conducted to study the effects of organic manure, lime and inorganic fertilizer on the nodulation and growth of Soybean (Glycine max(L) merrill) on an acid ultisol in southeastern Nigeria. The organic manure was poultry manure, the lime was commercial lime and the inorganic fertilizer was NPK(15 : 15: 15). There were 7 treatments and a control. The treatments were 100kg/ha inorganic fertilizer (NPK 15: 15: 15)(F1 );200kglhainorganicfertilizcr(NPK 1...

Characterization And Identification of Contemporary Diagnostic (B) Horizons of Soils in Ideato North Local Government Area of Imo State, South Eastern Nigeria NIGERIA

Abstract 14 There is a dearth of scientific information on the soils of Ideato North Local Government Area of Imo State in Southeastern Nigeria. This study was carried out to characterize and classify these soils with special emphasis on the identification of diagnostic B- horizons present in them. Free survey method was employed to locate the representative profiles. Ten profile pits were dug, properly studied macromorphologically, georeferenced using handheld Global Positioning System (GPS...

Phosphate Mobilization by Addition of Organic Acids in Two Soils of The Southern Guinea Savannah of Nigeria

ABSTRACT One mechanism by which plants can mobilize organic and inorganic forms of phosphorus (P) in soils is by exudation of low molecular weight organic acids. Laboratory and field trial were carried out during 2011 and 2012 cropping seasons to study the effects of additions of organic acids ( citric, oxalic and tartaric acids) on the mobilization of phosphate of soils from Minna and Mokwa, both in Southern Guinea Savanna of Nigeria. For initial laboratory studies and prior to field cultiv...

Soil Characterization And Land Suitability Evaluation of Anuka Farmland in Nsukka Local Government Area of Enugu State, Nigeria

Abstract The land at Anuka, Nsukka Local Government Area of Enugu State in Southeastern Nigeria, under the sub-humid tropical climate was evaluated for maize (Zea mays), cassava (Manihot esculenta), yam (Dioscorea spp.) and oil palm (Elaeis guineensis) cultivation. Data were obtained by field study and laboratory analyses. Six pedons were dug and described: two pedons each for maize and oil palm fields, and one each for yam and cassava fields. These pedons were dug to represent sampling unit...

THE EFFECT OF LAND USE ON SOIL AGGREGATE STABILITY AND SOIL CARBON SEQUESTRATION IN SOME SELECTED SOILS OF SOUTH EASTERN NIGERIA

 Abstract The Information on the effect of different land use systems on the aggregate stability and carbon sequestration is crucial for the recommendation of efficient land management practices. This study was conducted to evaluate the variation in aggregate stability and carbon sequestration under different land use systems in two agro ecological zones of south eastern Nigeria. The agro ecological zones were derived savannah and rainforest while the land use systems studied were cultivate...

LNFLUENCE OF BIOCHAR ON VEGETABLE (Amaranthus viridis) UPTAKE ON CADMIUM CONTAMINATED SOIL

 ABSTRACT Cadmium (Cd) is a common  environmental contaminant found in soils. Unlike other metals. Cd has no biological role, and is potentially toxic to microorganisms. The concentrations of cadmium in agricultural soils depend upon the amounts present in the parent rocks from which the soils form, the amounts added in the form of fertilizers and soil amendments, the amounts deposited onto soils from the atmosphere, and the amounts removed by harvested crops and by leaching. Its aim was t...

EFFECT OF MEXICAN SUNFLOWER (Tithonia diversifolia) MULCH ON THE GROWTH AND YIELD OF MAIZE (Zea mays L.)

 ABSTRACT Greenhouse study was conducted at Federal University Oye- Ekiti, Department of Soil Science and Land Resources Management between June and August 2016 to compare the growth and yield of maize (Zea mays L.) using different rates of organic (Tithonia diversifolia) and Inorganic fertilizer. The effect of the amendments on the soil chemical properties was also evaluated. The experiment was laid out in a Completely Randomized Design with four replications. Tithonia diversifolia was appl...

LAND EVALUATION STUDIES OF SOME SELECTED SOILS IN IKOLE SOUTH-WESTERN NIGERIA

 ABSTRACT Sustainable use of soils requires in-depth knowledge of the formation, genesis and properties of soil. It is in view of this that some soils derived from granitic parent rock in Ikole, South- western Nigeria covering 33.7 hectares of land where mapped at a scale of 1:50,000 using a combination of convectional and remote sensing methods of soil survey. The objective was to generate detailed information on the properties of the soil for their sustainable agricultural use and managem...

EFFECT OF LAND USE ON SOIL CARBON SEQUESTRATION IN SOILS OF THE DESERT MARGIN IN NIGERIA

 ABSTRACT Exploring the impact of changes in land use in soils of the desert margin soils in Nigeria .This research is a key component to global climate change. Soil samples were taken in two vegetation zone Sahel and Sudan Savannah under four different land uses( Forest Area, Arable land, Fallow land and Grazing land) at a depth of 0-15cm. The locations under Sahel Savannah are Goronyo ,Gamawa and Minjibir while the site under Sudan Savannah are Hadeija and Ulela. A 5x4x3 factorial experime...

SOIL CARBON VARIABILITY ACROSS DIFFERENT AGRICULTURAL LAND USE TYPES IN IKOLE-EKITI, EKITI STATE.

 ABSTRACT This research was conducted in Ikole-Ekiti to evaluate the effects of four land use types (forest plantation, arable land, fallow land and ranchland) and soil depth on soil organic carbon fractions namely; particulate organic carbon (POC), soil microbial biomass carbon (SMBC), total organic carbon (TOC) and water soluble organic carbon (WSOC). Soil samples were taken at 0-5, 5-10, I0-20 and 20-30 cm and 0-30 cm depths at each site using soil auger. The soil samples were analyzed fo...

THE EFFECT OF LAND USE ON THE PHYSICAL PROPERTIES AND ORGANIC CARBON OF SELECTED SOILS IN EKITI STATE

 ABSTRACT Forest soils in Ekiti state western Nigeria are destroyed due to agricultural activities. Information about the effect of land use on soil is important for soil sustainability and productivity. A study was conducted to investigate changes that may occur in the soil organic carbon content (SOC) and some selected soil physical properties due to conversion of forest to arable land. Six locations that were selected for this purpose include; Ona-Ara (Ll), Asin (L2), Ijesa Isu (L3), Odo-...

DEPTH AND TOPOGRAPHIC POSITION EFFECTS ON DISTRIBUTION OF SOIL ORGANIC CARBON IN RELATION TO AGRICULTURAL LAND USE AND MANAGEMENT IN IKOLE-EKITI, EKITI STATE.

Abstract Anthropogenic activities can destroy or drastically reduce the organic carbon contents of soils. This study was conducted to evaluate the effects of two land use management practices (arable land and oil palm land), soil depth and topography on soil organic carbon contents. The study was carried out in Ikole-Ekiti, Ekiti State, Nigeria. At each location, three topographic units were identified as upper slope, middle slope and lower slope at 50 m apart. A mini pit of 150 cm by 100 cm ...

CONTRIBUTION OF ORGANIC MATTER TO THE CATION EXCHANGE CAPACITY OF SOME SOILS IN NIGERIA

ABSTRACT The relative contributions of clay and organic matter to the cation exchange capacity of soils have been of great interest to many researchers. Organic matter. as a critical component of the soil. plays. significant roles which far exceed its quantitative distribution in the soil. It is regarded as the major contributor of CEC in weathered soils because of its several functional groups such as R-COO-. R-C=O. R-COH and R-SI I that deprotonate and leave net negative charges on the...


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