scholarly journals ​Impact Assessment of Oil Exploration Activities on Soil Fertility in Delta State, Nigeria

2021 ◽  
Author(s):  
S.A. Ojobor ◽  
O.F. Omovie-Stephen ◽  
O. Abirhire
Keyword(s):  
Organic Matter ◽  
Soil Fertility ◽  
Room Temperature ◽  
Soil Improvement ◽  
Oil Exploration ◽  
Limited Information ◽  
Nutrient Index ◽  
Calcium Magnesium ◽  
The Impact ◽  
Nitrogen Phosphorus

Background: Limited information on impact of oil exploration on soil fertility in Nigeria is hindering the efforts toward soil improvement. Hence, the impact of oil exploration on soil fertility in four local government areas (LGA), Delta State, Nigeria was evaluated in 2020. Methods: Two LGAs in oil producing (Ukwani, Ndokwa) and non oil producing (Aniocha South, Ika South) and three communities in each LGA and one crop largely cultivated was purposely chosen. Soil samples were taken from 0-30 cm depth at 10 meters intervals along transverses cut at 100 m apart. The samples were air-dried at room temperature, crushed and made to pass 2 mm sieve. Soil pH, organic matter, nitrogen, phosphorus, calcium, magnesium, potassium and sodium were measured. Data were statistical analyzed and least significance difference at α0.05 was used to separate means while Parker’s nutrient index was used to rate the fertility. Result: Ukwani soil was strongly acidity (5.30), Ndokwa was moderately acidity (5.83) while Ika (6.61) and Aniocha (6.27) were slightly acidity. Organic matter (2.54 and 2.48%) and phosphorus (16.98 and 14.51 mg/kg) were medium in Ika and Aniocha whereas, both were low in Ukwani (1.49%, 10.14 mg/kg) and Ndokwa (1.74%, 12.52 mg/kg), respectively. Nitrogen was high in Ika (0.27%) and Aniocha (0.42%), medium in Ndokwa (0.18%) and low in Ukwani (0.15%). Potassium and sodium were high in Ika, Aniocha and Ukwani but medium in Ndokwa. Calcium was high in Ika, medium in Aniocha but low in Ndokwa and Ukwani. Magnesium was high in Ika, Aniocha and Ndokwa but was medium in Ukwani.

The Impact of Plant Hedgerow in Three Gorges on the Soil Chemicophysical Properties and Soil Erosion

2012 ◽  
Vol 500 ◽  
pp. 142-148 ◽  
Author(s):  
Wen Xing Lü ◽  
Hong Jiang Zhang ◽  
Yu He Wu ◽  
Jin Hua Cheng ◽  
Jian Qiang Li ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Erosion ◽  
Cation Exchange ◽  
Cation Exchange Capacity ◽  
Exchange Capacity ◽  
Citrus Reticulata ◽  
Three Gorges ◽  
Zanthoxylum Bungeanum ◽  
The Impact ◽  
Nitrogen Phosphorus

Through the research and sampling analysis on different plant hedgerow in sloped farmland in Three Gorges reservoir area, we will conduct research on the impact of plant hedgerow in Three Gorges on the chemicophysical properties of soil and soil erosion. The results show that the plant hedgerow mainly composed by Morus alba, Citrus reticulata, Zanthoxylum bungeanum, Vitex negundoand Begonia fimbristipula can decrease the soil density as well as sand content and increase soil porosity, soil water content, silt content and clay content to some extent. The organic matter, nitrogen, phosphorus, potassium and cation exchange capacity and other chemical indices of soil in different locations in plant hedgerow indicate as maximum in on-band, minimum in inter-band, middle both upper-band and below-band. In the same slop with no plant hedgerow, the organic matter, nitrogen, phosphorus, potassium and cation exchange capacity and other chemical indices of soil show a trend of increasing from the top to the bottom of the slop, which reveals that these substances own a feature of accumulation by moving to the bottom. The strength of soil anti-corrosion in different plant hedgerow is: Vitex negundoand (79.2%)> Citrus reticulata (36.4%)> Morus alb (22.4%)> Zanthoxylum bungeanum (18.9%)> Begonia fimbristipula (15.3%)> CK (8.7%), and the soil anti-corrosion indices in plant hedgerow are decreasing with the increase of soil immersion time, besides, the former and the latter are 3 times polynomial function. For those 5 plant hedgerows, Vitex negundoand owns the best impact on improving soil chemicophysical properties and reducing soil erosion.

The mineral content of cereals, grain legumes and oilseed crops in South Australia

1978 ◽  
Vol 18 (93) ◽  
pp. 579 ◽  
Author(s):  
JE Schultz ◽  
RJ French
Keyword(s):  
Soil Fertility ◽  
Nutrient Removal ◽  
Mineral Content ◽  
South Australia ◽  
Grain Legumes ◽  
Growth Stages ◽  
Oilseed Crops ◽  
Calcium Magnesium ◽  
Copper Zinc ◽  
Nitrogen Phosphorus

Samples of barley, oats, lupins, peas, rape, linseed and safflower were analysed at five growth stages for nitrogen, phosphorus, potassium, sulphur, calcium, magnesium, sodium, chlorine, silicon, copper, zinc and manganese. The results are summarized and compared with those for wheat published in a previous paper. The data are discussed in relation to nutrient removal and the effect on soil fertility.

scholarly journals Impact of Cement Dust on Physical and Chemical Nutrients Properties of Forest Topsoil

2021 ◽  
Vol 25 (5) ◽  
pp. 695-700
Author(s):  
A.P. Adebiyi ◽  
H.O. Adigun ◽  
K.J. Lawal ◽  
K.D. Salami ◽  
V.A.L. Adekunle ◽  
...  
Keyword(s):  
Organic Matter ◽  
Chemical Properties ◽  
Exchange Capacity ◽  
Cement Dust ◽  
Sodium Calcium ◽  
Close Proximity ◽  
Calcium Magnesium ◽  
Magnesium Cation ◽  
Physical And Chemical ◽  
Nitrogen Phosphorus

: The study examined the impact of Cement dust on physical and chemical nutrients properties of forest topsoil in close proximity to a major private cement industry in Obajana, Kogi State, Nigeria using standard methods by collecting Topsoil samples for physical and chemical properties analyses which are particle size, moisture content, pH, carbon, nitrogen,phosphorus, potassium, sodium, calcium, magnesium, cation exchange capacity and organic matter.Data revealed a strong influence of the particulate pollutants on the forest topsoil in close proximity to the Cement factory. It was observed that the soil properties; moisture content and soil pH varied at distances away from the factory. The result showed that the Cement dust particles entering the soil increased the pH of the soil, it more alkaline. The highest pH (6.03) was observed from hundred and fifty meters sample indicating the highest particulate pollution. There were also variations in the other soil nutrient properties; carbon, nitrogen, phosphorus, potassium, sodium, calcium, magnesium, cation exchange capacity and organic matter arising from the effect of cement dust. High organic matter content was recorded in the location samples compared with the control sample. This is attributed to the addition of cement dust to the soils, resulting in improved organic-matter cycling and plant growth. The result also showed that the chemical properties; organic carbon (OC), organic matter (OM), phosphorus (P), potassium (K), sodium (Na), calcium (Ca) and magnesium (Mg) are significantly higher in the study areas than the control. The study therefore concludes that the emission of cement dust on the forest stands over the years was found to have significantly affected the topsoil properties.

scholarly journals Quantifying and Mapping of Major, Secondary and Micronutrient Status of Tomato Growing Soils in Kolar District, Karnataka Using GIS and GPS Approach

2020 ◽  
pp. 14-27
Author(s):  
P. N. Siva Prasad ◽  
C. T. Subbarayappa ◽  
V. Ramamurthy ◽  
A. Sathish
Keyword(s):  
Spatial Variability ◽  
Soil Fertility ◽  
Crop Production ◽  
Nutrient Management ◽  
Nutrient Status ◽  
Available Nitrogen ◽  
Micronutrient Status ◽  
High Nutrient ◽  
Nutrient Index ◽  
The Impact

Assessment of land use-induced changes in soil properties is essential for addressing issues of spatial variability in soil fertility and sustainable land productivity. In view of this, a study was conducted to assess the impact of spatial variability on physicochemical properties, macro and micro nutrient status of 75 farmers fields of tomato growing areas of Kolar district, Karnataka. Arc Map with spatial analyst function of Arc GIS software was used to prepare soil fertility maps, which would act as an important tool for soil as well as nutrient management for sustainable crop production by using Global Positioning System coordinates. The results revealed that the soils under investigation were acidic to alkaline in reaction (pH 4.41 to 8.13), mostly non saline and low to high in organic carbon status (0.53 to 1.95%). Available nitrogen, phosphorus, potassium and sulphur content varied from 150.53-348.10, 6.4 - 111.44, 147.18 - 916.61 and 12.29 - 103.8 kg ha-1. Exchangeable Ca, Mg are in the range of 2.5 – 14.2 and 1.2 – 6.6 C mol (p+) kg. The GIS-aided thematic maps with respect to available zinc, 6.67 (low), 21.33 (medium) and 72 (high) per cent samples were categorized, based on the existing critical limits. All the studied samples i.e., 100 per cent were high in copper content, 65.33, 30.67 and 4 per cent samples of Mn, 25.33, 32 and 42.67 per cent samples of Fe, were categorized as low, medium and high in nutrient status respectively. With respect to available boron 16.67 per cent was under low, 38.09 per cent was under medium and 45.24 per cent was under high nutrient status. The nutrient index (NI) of tomato growing areas of Kolar district revealed that N (1.19), manganese (1.39) and iron (1.29) were categorized as low, available boron (2.17) as medium and P (2.65), K (2.71), S (2.65) zinc (2.75), copper (3.0) as high nutrient index category.

scholarly journals Survey of the environmental impacts of pond fish farming

2006 ◽  
pp. 19-24
Author(s):  
Dénes Gál ◽  
Éva Kerepeczki ◽  
Pál Szabó ◽  
Ferenc Pekár
Keyword(s):  
Organic Matter ◽  
Environmental Impacts ◽  
Fish Farming ◽  
Nutrient Loads ◽  
Nutrient Amounts ◽  
The Impact ◽  
Nitrogen Phosphorus ◽  
Inputs And Outputs

The aim of this study was to survey the nitrogen, phosphorus and organic matter loads and the discharge of fishponds. The inputs and outputs of nutrient amounts of fishponds and their sources are described. The impact of a fishpond on the nutrient loads of receiver waters was determined. The investigations of this study were to determine and evaluate the nitrogen, phosphorus and organic matter budget of fishponds representing different technologies and areas.

scholarly journals THE IMPACT OF BIOLOGICAL PREPARATIONS ON THE EFFECTIVE SOIL FERTILITY AND MINERAL NUTRITION OF APRICOT AND CHERRY PLUM SEEDLINGS

2015 ◽  
Vol 21 ◽  
pp. 31-38
Author(s):  
O. E. Klymenko ◽  
M. I. Klymenko ◽  
I. A. Kameneva
Keyword(s):  
Organic Matter ◽  
Soil Fertility ◽  
Mineral Nutrition ◽  
Organic Matter Content ◽  
Mineral Elements ◽  
Positive Influence ◽  
Matter Content ◽  
Planting Material ◽  
Effective Use ◽  
The Impact

The effect of microbial preparations (MP) use, created on the basis of nitrogen-fixing and phosphorous mobilizing bacteria as well as complex of microbial preparations (CMP) on the effective soil fertility, mineral nutrition and efficiency of cherry plum and apricot seedlings growing was studied in the fruit nursery on the southern chernozems for three years. It was established that MP’s had a positive influence on the content of mineral elements in the soil and the leaves of fruit plants while promoting output of the standard planting material. Azotobacterine and CMP had the best effect on these indicators. Slight decrease of organic matter content in the soil under the cherry plum seedlings in MP variants was observed. Replenishment of the soil with organic matter is recommended for the effective use of MPs.

scholarly journals Modeling of sod-podzolic soil fertility indicators optimization in the course of a field experiment

2020 ◽  
Vol 17 ◽  
pp. 00128
Author(s):  
Alexander Ilves ◽  
Lyudmila Smolina ◽  
Dmitry Danilov
Keyword(s):  
Soil Fertility ◽  
Mineral Nutrition ◽  
Field Experiments ◽  
Soil Improvement ◽  
Point Of View ◽  
Soil Enrichment ◽  
Podzolic Soils ◽  
Specific Accumulation ◽  
Complex Relationships ◽  
The Impact

The formation of primary experimental material was carried out in the form of production seeding and field experiments. Among a large number of indicators assessing certain parameters of soil fertility from the point of view of fertility reproduction, stable characteristics determining agronomic soil value are of the highest importance For sod-podzolic soils, such characteristics are the granulometric composition, the content of organic matter and available forms of mineral nutrition elements, the acidity level. The impact on these indicators determines the effectiveness of soil improvement measures. Based on the generalization of experimental data, on the mathematical and statistical methods, the optimal parameters of these properties for specific crops were determined. To improve and manage soil fertility, it is also necessary to further develop special regulations related to soil enrichment with elements aimed at mineral nutrition of plants and humus. There are complex relationships between the doses of fertilizers and the specific accumulation of the relevant substances, which should be studied in special experiments.

scholarly journals Organic matter amendments improve soil fertility in almond orchards of contrasting soil texture

2021 ◽  
Author(s):  
Yocelyn B. Villa ◽  
Sat Darshan S. Khalsa ◽  
Rebecca Ryals ◽  
Roger A. Duncan ◽  
Patrick H. Brown ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Fertility ◽  
Soil Texture ◽  
Sandy Loam ◽  
Cropping Systems ◽  
Loamy Sand ◽  
Inorganic N ◽  
Soil Inorganic N ◽  
The Impact ◽  
Soil Inorganic

AbstractThe effects of organic matter amendments (OMA) on soil fertility in permanent cropping systems like orchards is under-studied compared to annual cropping systems. We evaluated experimentally the impact of OMAs on soil fertility in almond (Prunus dulcis) orchards over a two-year period with annual applications. Two OMAs, derived from composted green waste (GWC) or composted manure wood chips (MWC), were applied as surface mulch and compared to a control at two sites with different soil textures (sandy loam and loamy sand). OMAs increased soil moisture content (0–0.1 m depth) at both sites by 27–37%. Both amendments increased soil inorganic N at the sandy loam (GWC: 194%; MWC: 114%) and loamy sand (GWC: 277%; MWC: 114%) sites the month following application, but soil inorganic N concentrations quickly decreased to values similar to those of control plots. After two-years, the GWC and the MWC amendments increased the soil cation exchange capacity (CEC) by 112% and 29%, respectively, in the sandy loam site, but no change was observed in the loamy sand site. The greatest increase in soil extractable K occurred in the GWC-amended plots at the sandy loam site even though the initial K concentration of MWC was higher. Both OMAs increased soil organic carbon (SOC) after two years, but the SOC increase in the GWC-amended plots was greater. Our results suggest that OMAs can significantly improve soil fertility after one or two annual applications, and that fertility gains appear to be dependent on soil texture than the nutrient concentrations of the OMA.

Soil polymicrobial biofilms resistance increasing using Biogeosystem Technique transcendental environmental services

2021 ◽  
Author(s):  
Tamara Aysuvakova ◽  
Alexey Glinushkin ◽  
Alexander Swidsinski ◽  
Valery Kalinichenko ◽  
Alexey Zavalin ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Fertility ◽  
Soil Improvement ◽  
Soil Aggregate ◽  
Environmental Services ◽  
Environmentally Safe ◽  
Polymicrobial Communities ◽  
Polymicrobial Infections ◽  
Aggregate System

<p>Soil organic matter biodegradation is an agent of the soil fertility and passivation of the hazardous substances including heavy metals. Bacteria within specific habitats, be it the mouth, tonsils, intestines, gut, vagina, or soil are not a faceless mixture of the once acquired participants, but the structurally strictly ordered polymicrobial communities where each participant takes its specific functional place. The conditions for polymicrobial biofilms in the soil are important.</p><p>The aim was tracking down the structural organization and adherence to soil particles of the polymicrobial communities and biofilms, responsible for biodegradation.  Polymicrobial communities and biofilms can be used as a starter, indicator, and control tools for the targeted soil and landscape improvements. Multiple skills in identification, characterizing and monitoring of functional activity of polymicrobial biofilms in the human body and gut were developed in the laboratory of polymicrobial infections and biofilms of the Charité hospital over the past 30 years. The biofilms do not occur in all systems and at any time in relevant amounts. The biochemical activity of the microorganisms till now is investigated solely in pure cultures. As soon as more than three different taxa are involved, the cultivation of the target microorganisms got problematic. The mapping of biofilms by the FISH method is promising for the following objectives in the soil system:</p><p>- identification of the structured polymicrobial biofilms for optimal composting, soil fertility, and a healthy environment;</p><p>- revealing modelling the polymicrobial starter of soil fertility;</p><p>- polymicrobial biofilms activity ensuring via control of the soil architecture, soil moisture and aeration;</p><p>- aerobe/anaerobe conditioning, pH, humic acids, and organic and mineral fertilizers, amelioration and remediation additives;</p><p>- testing of the substrate-bound polymicrobial biofilms as a starter for the shaping of different lands and agricultures.</p><p>Development of the soil-microbiological theoretical and technical fundamentals for the long-term soil improvement and environmentally safe organic wastes recycling and heavy metal passivation into the synthesized soil multilevel aggregate system under minimal intra-soil moistening and appropriate intra-soil mineral and organic matter, and waste application using Biogeosystem Technique (BGT*) transcendental environmental services.</p><p>The soil-microbiological theoretical and technical fundamentals are useful for long-term soil improvement and environmentally safe and eсonomically efficient organic wastes recycling into the synthesized soil aggregate system. The transcendental intra-soil aggregate system construction, the pulse intra-soil continuously-discrete watering, dispersed intra-soil matter application are decisive for higher soil microbial activity and target polymicrobial infections and biofilms transformation into the environmentally safe fertile substances.</p><p>Comparative characterization of the polymicrobial community dynamics in colon and soils will help to promote the function of polymicrobial biofilms in the soil as a specific starter. The BGT* methodology is capable to ensure the soil fertility, improve the soil polymicrobial biofilms resistance, and provide the soil and human health.</p><p>The research was financially supported by the RFBR, projects no. 18-29-25071 and 19-29-05265.</p>

The influence of nitrogen, phosphorus and potash fertilizer application on oat yield and quality

2007 ◽  
Vol 87 (4) ◽  
pp. 459-468 ◽  
Author(s):  
R M Mohr ◽  
C A Grant ◽  
W E May ◽  
F C Stevenson
Keyword(s):  
Management Strategies ◽  
Relative Yield ◽  
Growth Yield ◽  
Kernel Weight ◽  
Limited Information ◽  
Available N ◽  
Yield And Quality ◽  
Phosphorus Application ◽  
The Impact ◽  
Nitrogen Phosphorus

Western Canada has become one of the key production areas for oat (Avena sativa L.) in North America. Limited information is available regarding fertilizer management strategies to optimize yield and quality in this environment. An experiment was conducted at two locations in southern Manitoba in 2000, 2001 and 2002 to assess the impact of factorial combinations of N (0, 40, 80, 120 kg N ha-1 as urea), P (0, 13, 26 kg P ha-1 as monoammonium phosphate), and KCl (0, 33 kg K ha-1) on the growth, yield and quality of AC Assiniboia oat. Low to moderate N rates significantly increased yield, with optimum relative yield achieved with a plant-available N supply of approximately 100 kg N ha-1. Increasing N rate also increased lodging and reduced test weight, kernel weight and kernel plumpness, suggesting that optimal N management must balance yield improvement against reductions in grain quality. Phosphorus application increased yield in 2 of 6 site-years, but had no overall effect on quality. Application of KCl resulted in small increases in yield (88 kg ha-1), kernel weight and kernel plumpness on moderate to high K soils, which were not likely to provide a significant economic benefit. The lack of consistent interactions among N, P, and KCl suggests that these nutrients may be managed individually. Key words: Oat, nitrogen, phosphorus, potassium chloride, yield, quality

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