Research Papers/Topics in Soil Science

Comparative effect of Groundnut Genotypes on Yield and N Fixation in the Sudan and Northern Guinea Savannahs of Nigeria

ABSTRACTRecognition of high yielding and nitrogen (N) fixing groundnut genotypes and desegregating them in the cereal-based cropping systems common in savannah regions will enhance food security and reduce the need for high N fertilizers hence, minimize the high cost and associated environmental consequences. Field trials were conducted during the 2015 growing season at the Research Farms of Bayero University Kano (BUK) and Institute for Agricultural Research (IAR),&n...

Appraisal and Mapping of Soil Salinity and Sodicity problems in Sector one of Watari Irrigation Scheme, Kano State

ABSTRACT One of the main reasons for the loss of productive land in irrigated fields is the buildup of salinity in the soil. In the watari irrigation Scheme, no systematic appraisal and mapping have been made before within the sector. The study area was selected after a reconnaissance survey based on the farmer's complaint about thelow production. Global positioning system (GPS) was used to record the coordinate, and delineate the boundary of the study site. The coordinates of the d...

Genotypic EFFECT of Groundnut on Nodulation, N Fixation and N Balance in two Savannahs of Nigeria

AbstractIdentification of high N-fixing groundnut genotypes and integrating theminto 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 soilN and yield of groundnut. Trials were carried out during the 2015 rainy season at Bayero University Kano (BUK) Agric...

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...

Soil Porosity and Water Infiltration as Influenced by Tillage Practices on Federal University of Agriculture Abeokuta, Ogun State, Nigeria Soil

 AbstractThe relations between soil pore structure induced by tillage and infiltration play an important role in flow characteristics of water and solutes in soil. The effects of agricultural management practices on soil physical parameters aid the effective sustainability of soils. In this study, three tillage methods common to the study area on porosity and water infiltration were assessed. Tillage treatments include zero tillage (Plot covered with vegetation (conservation tillage))...

The Effects of Soil Degradation to Sustainable Agriculture in Chongwe District, Zambia

The aim of this study was to investigate the effects of land degradation on agricultural land use, planning and management in chongwe, Zambia and specifically determined farmers’ considerations of land suitability for selected types of agricultural land uses in varying cropping zones, investigated farmers’ local environmental knowledge of land degradation indicators and finally documented farmers’ land management strategies and practices for soil and sustainable Agricultural conse...

Effects Of Manure, Lime And Phosphorus Fertilizer On Soil Properties And Soybean (Glycine Max L.) Yields In Embu County, Kenya

Agricultural sector in Kenya, contributes with 25% on GDP, yet this sector is far to supply adequate food for an increasing population due to declining soil productivity. Soybean (Glycine max L. Merrill) is relatively new crop being introduced in smallholders farming system in the Central Highlands of Kenya as source of nutrition, income generation and soil fertility improvement. However, the crop yields are below the national average. Soil acidity and depletion of nutrients affect nega...

Lime And Manure Application To Acid Soils And Their Effects On Bio-Chemical Soil Properties And Maize Performance At Kavutiri - Embu County

Soil acidity is widespread globally, accounting for about 40% of total arable soils. In Kenya, acid soils cover about 13% of total land area and are distributed widely in the croplands of central and western Kenya regions, covering over one million hectares. The main limitation of crop productivity in Kavutiri, Embu, is soil acidity and more specifically aluminium toxicity. The objective of this study was to determine the effects of agricultural lime in combination with farmyard man...

Effect Of Cattle Manure, Mineral Fertilizer And Rhizobium Inoculation On Climbing Beans Production And Soil Properties In Burera District, Rwanda.

Agriculture is the major engine of Rwandese economy, accounting for about 40% of the GDP, 85% of employment and 80% of exports. Known as “meat for the poor”, beans constitute a predominant source of proteins in Rwandese diet since they supply 65% of national dietary proteins compared to 4% from animal sources. However, the on-farm bean productivity is about 0.8 – 1.0 tons/ hectare which is quite low compared to 5 tons/hectare that is achieved under optimal management condition...

Effects Of Different Organic Residues On Carbon Sequestration, Nutrient Availability In Soil And Maize Yields At Katumani, Machakos County, Kenya

Reduced farm productivity in smallholder farms is the principal cause of food insecurity in semi- arid parts of Kenya. This is mainly attributed to soil fertility depletion, land degradation, low soil moisture and climate change. Climate change due to increased carbon dioxideemission into the atmosphere has impacted negatively on the food productivity in Africa. The objectives of this study were: 1) to determine the effect of different organic residues on soil carbon accumulation in...

Uantifying Greenhouse Gas Emissions And Carbon Stocks In Maize-Soybean Cropping Systems In Siaya County, Kenya

ABSTRACT As climate change continues to threaten ecosystems’ functions, agriculture remains one of the major source of greenhouse gas (GHG) emissions that are responsible for global warming. The major GHG in agriculture are; carbon dioxide (CO2), nitrous oxide (N2O) and methane (CH4). Unfortunately, agriculture is also one of the most affected sectors by climate change. There is therefore need to reduce emissions by adopting agricultural practices with mitigation potential. This is by...

Effects Of Rhizobia Inoculation And Phosphorus Levels On Soybean (Glycine Max L.Merril) Yields And Selected Soil Properties In Embu County, Kenya

ABSTRACT Soybean (Glycine max L. Merril) productivity in Kenya is adversely affected by low yield, poor fertilizer use, ineffective inoculation, and soil fertility management constraints. The empirical understanding of the interaction between native soil rhizobia, inoculation, nitrogen fixation, soil fertility management practices and how these factors influence soybean productivity is insufficient. The general objective of this study was to investigate the effect of rhizobium inoculati...

Effect Of Farmyard Manure And Mineral Fertilizers On Maize Yield And Soil Properties In Huye And Bugesera Districts Of Rwanda

Agriculture in Rwanda is today characterized by low agricultural productivity due to soil fertility decline. This is mainly attributed to the mining of nutrients due to continuous cropping without adequate external addition of inputs. The adoption of Integrated Soil Fertility Management (ISFM) technologies such as the combination of organic manure and mineral fertilizers is being taken as one of solutions to this situation. A study was therefore, conducted to investigate the effects of f...

Rhizobia Inoculants Combined With Organic And Inorganic Fertilizer Amendments Effects On Nitrogen Fixation And Yields Of Beans In South Kivu, Democratic Republic Of Congo

ABSTRACTIn South Kivu Eastern of DR.Congo, most soils are highly weathered, leached and have low nutrients content resulting to low agricultural productivity. The objectives of the study was (i)to evaluate the effect of combining rhizobia inoculation and different fertilizer amendment on biomass and grain yields,(ii) to assess the nitrogen fixation efficacy of commercial rhizobia strains and (iii) to assess the effect of combining rhizobia inoculation and different fertilizer amendments on so...

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 CTGreen 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 );200kglhain...


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