scholarly journals Phytoremediation of diesel and spent engine oil contaminated soil using Kariya (Hildergardia barteri Mast.) seedlings

2020 ◽  
Vol 36 (2) ◽  
pp. 139-149
Author(s):  
S.O. Olajuyigbe ◽  
O.O. Fayinminnu ◽  
A.O. Ayoade
Keyword(s):  
Growth Performance ◽  
Biomass Accumulation ◽  
Diesel Oil ◽  
Engine Oil ◽  
Control Treatment ◽  
Total Biomass ◽  
Plant Parts ◽  
Spent Engine Oil ◽  
Number Of Leaves ◽  
Collar Diameter

Using a completely randomized design experiment, the effect of different levels of diesel and spent engine oil contamination (0 mL/kg, 25 mL/kg, 50 mL/kg and 75 mL/kg of soil) on growth performance (seedling height, collar diameter, number of leaves and biomass accumulation) of Hildergardia barteri seedlings were assessed for twelve weeks. The concentration of Lead, Nickel, Copper and Zinc in the plant parts were also determined. Data were analysed using descriptive and inferential statistics at P<0.05 level of significance. There were significant differences in the effects of diesel and spent engine oil on growth performance of seedlings based on contamination levels. Control treatment had the highest height (92.43±5.13 cm), collar diameter (16.23±0.98 mm), number of leaves (11.21±0.47) and total biomass (33.01±12.79 g). Seedlings exposed to 50 mL/kg treatments had the least height (diesel oil: 78.21±7.22 cm; spent engine oil: 79±6.24 cm); those exposed to 75 mL/kg contamination had the least collar diameter (diesel oil: 8.85±1.05 mm, spent engine oil: 12.02±1.01 mm), while seedlings treated with 50 mL/kg diesel oil (2.21±0.37) and 75 mL/kg spent engine oil (4.79±0.55) had the lowest number of leaves. Heavy metal bio-accumulation ranges were: Lead: 0.17-0.39 mg/kg, Nickel: 0.09–0.45 mg/kg, Copper: 0.54–1.08 mg/kg, Zinc: 0.88–1.58 mg/kg. The ability of the seedlings to survive and bio-accumulate heavy metals indicate the potential phytoremediation capabilities of Hildergardia barteri. Keywords: phytoextraction, hydrocarbon derivatives, growth inhibition, Hildergardia barteri

Phytoremediation potential of Nauclea diderrichii (De Wild and Th. Dur.) seedlings grown in spent engine oil contaminated soil

2020 ◽  
Vol 55 (4) ◽  
pp. 261-272
Author(s):  
OI Bolanle Ojo ◽  
MKC Sridhar
Keyword(s):  
Heavy Metals ◽  
Contaminated Soil ◽  
Root Length ◽  
Engine Oil ◽  
Lead And Cadmium ◽  
Significant Difference ◽  
Spent Engine Oil ◽  
Number Of Leaves ◽  
Collar Diameter ◽  
Nauclea Diderrichii

Remediation of environmental pollution has been of great concern in recent years. This study was carried out to investigate the potentials of Nauclea diderrichii seedlings to remediate heavy metals from spent engine oil (SEO) contaminated soil. SEO from diesel and petrol engines in different quantities were applied to each plant using 2 kg soil. Plant height, collar diameter, number of leaves, root length were assessed. Amount of lead and cadmium present in the leaves, stem and root of the seedlings were assessed at the end of the experiment. Result showed that 100 % of the seedlings subjected to various treatments survived for the duration of 5 months. There was no significant difference (α>0.05) in the height of N. diderrichii seedlings. Significant (α=0.05) negative reductions were observed in the seedlings collar diameter, no. of leaves and root length. There was significant difference (α>0.05) in the amount of lead and cadmium extracted by N. diderrichii seedlings. This study has been able to show that N. diderrichii has the ability/potential to phyto-extract heavy metals from soil. Bangladesh J. Sci. Ind. Res.55(4), 261-272, 2020

scholarly journals Growth performance and resistance to ground late frosts of Fagus sylvatica L. plantation treated with a brassinosteroid compound

2017 ◽  
Vol 63 (No. 3) ◽  
pp. 117-125
Author(s):  
Gallo Josef ◽  
Baláš Martin ◽  
Linda Rostislav ◽  
Kuneš Ivan
Keyword(s):  
Mortality Rate ◽  
Growth Performance ◽  
European Beech ◽  
Frost Damage ◽  
Control Treatment ◽  
Initial Growth ◽  
Height Range ◽  
Fagus Sylvatica L ◽  
Collar Diameter ◽  
Root Collar

We measured the initial growth performance of a young plantation of European beech treated with a brassinosteroid compound prior to planting and compared it with a control treatment: we assessed heights, root collar diameters and mortality rate during the period 2012–2015. The trees showed posterior damage by ground frost after a substantial late frost event on the night of 4–5 May 2014. Therefore, we evaluated the post-stress vitality of trees, subsequent height increment from spring to August, and the height range of the damage.<br />Mean height, root collar diameter, and mortality rate did not show any significantly better performance in the brassinosteroid treatment over the control treatment. Neither did the application treatment have a significant positive effect on the resistance of beech to late frosts. The severe frost damage was most intense at 30 cm above ground, and rapidly declined with increased height.

scholarly journals Influence of Spent Engine Oil Pollution and Organic Amendment on Soil Physicochemical Properties, Microbial Population and Growth of Capsicum annuum (L.)

2020 ◽  
pp. 17-25
Author(s):  
M. O. Nwachukwu ◽  
J. N. Azorji ◽  
L. A. Adjero ◽  
M. C. Green ◽  
C. E. Igwe ◽  
...  
Keyword(s):  
Physicochemical Properties ◽  
Microbial Population ◽  
Organic Amendment ◽  
Poultry Manure ◽  
Germination Percentage ◽  
Soil Samples ◽  
Engine Oil ◽  
Polluted Soils ◽  
Spent Engine Oil ◽  
Number Of Leaves

This study investigated the impacts of spent engine oil on the physicochemical properties of soil, soil's microbial population and growth of Capsicum annuum. It covered assessment of different levels of contamination (0, 20, 40, 60 and 80%) in soil; which represents the degree of oil spillage concentration on the growth performance of C. annuum investigated. Percentage germination, seedling height, number of leaves and number of branches decreased as the concentrations of the spent engine oil in soil samples increased and affected soil physicochemical properties. The screening experiment conducted showed that poultry manure improved the physicochemical properties of sandy loam soils contaminated engine oil. The effects of poultry manure as an organic amendment was assessed using pepper (C. annuum) as test crop. All amendment made significant increase in soil organic carbon and calcium content over the polluted soils. Soil acidity increased, soil exchangeable ions decreased. N, P and K were altered in the polluted soils as compared to the controls. There were increased bacterial counts (2.21 – 2.85) and a decrease in fungi population (0.48 - 0.59) in the spent engine oil-contaminated soils compared with the control. The oil reduced germination percentage, depressed growth, reduction in leaf number and plant height of the C. annuum. Therefore the spent engine oil clearly had detrimental effects on soil's physicochemical and biological properties. The oil contributed largely to the extreme acidic nature of the polluted soils. However, maximum increase in plant height, germination percentage, number of leaves and branches were recorded with amendment of the polluted soils with poultry manure. Results show the considerable potential of remediation protocols with poultry manure as a remediating agent for oil spill remediation in the soil samples.

scholarly journals Efficiency of nitrogen and potassium application on phytotechnical parameters and yield of melon

2020 ◽  
Vol 36 ◽  
Author(s):  
Pablo Cristovão de Alencar Fernandes ◽  
Laércio da Silva Pereira ◽  
Carlos José Gonçalves de Souza Lima ◽  
Gabriel Barbosa da Silva Júnior ◽  
Theuldes Oldenrique da Silva Santos ◽  
...  
Keyword(s):  
Block Design ◽  
Branch Length ◽  
Biomass Accumulation ◽  
Area Index ◽  
Leaf Chlorophyll ◽  
Technological Level ◽  
Rational Management ◽  
Number Of Leaves ◽  
Use Efficiency ◽  
Collar Diameter

Phytotechnical parameters, yield and fertilizer use efficiency are relevant to the rational management of fertigation, especially in cultivation of high technological level. Thus, the objective was to evaluate the influence and efficiency of nitrogen (N) and potassium (K) application on the phytotechnical parameters, yield and nutritional efficiency of yellow melon in a fertigation system. The experiment was conducted in the city of Bom Jesus-PI, Brazil, from January to April 2016, in a strip-block design with four replicates, and the treatments consisted of five N levels (0, 45, 90, 135 and 180 kg ha-1 in the form of urea) and five K levels (0, 60, 120, 180 and 240 kg ha-1 in the form of potassium chloride), applied through fertigation. Collar diameter, main branch length, leaf chlorophyll content, number of leaves, leaf area index, biomass accumulation, fruit yield, and N and K use efficiencies were evaluated. Applications of 180 kg ha-1 of N and 240 kg ha-1 of K, respectively, led to the highest growth of the melon, while maximum production was obtained with the use of 112.50 and 165 kg ha-1 of N and K, respectively. The efficiency of N and K use decreased with increasing levels.

scholarly journals Morphological and photosynthetic adaptations of Tabebuia aurea seedlings in the nursery

2013 ◽  
Vol 17 (11) ◽  
pp. 1201-1209 ◽  
Author(s):  
Eduardo R Gonçalves ◽  
Felipe C. Souza ◽  
Luan N. dos Santos ◽  
José V. Silva ◽  
Vilma M. Ferreira ◽  
...  
Keyword(s):  
Gas Exchange ◽  
Leaf Gas Exchange ◽  
Biomass Accumulation ◽  
Total Biomass ◽  
Direct Sunlight ◽  
Active Radiation ◽  
Full Sunlight ◽  
Growth Measurement ◽  
Number Of Leaves ◽  
Photosynthetic Adaptation

Tabebuia aurea (Benth. & Hook. f. ex S. Moore) (Bignoniaceae) is a boreal species common in Brazil. It is used for ornamental parks and along sidewalks. Its timber is also used for furniture. The objective of this study was to evaluate the effect of nursery shading on the growth and photosynthesis of T. aurea and their photosynthetic adaptation after being transferred to direct sunlight. The T. aurea seedlings were grown under 0, 50, 70 or 95% shade. The photosynthetic active radiation and leaf gas exchange were measured over two distinct periods: 51 (young seedlings) and 70 days after having been sown under each shade treatment. Immediately after the measurements were taken, the seedlings were transferred into full sunlight and the measurements were repeated two times after 15 min and 3 days under ambient sunlight. T. aurea seedlings showed satisfactory growth up to 50% shade in the nursery, which could be verified both by growth measurement and by total biomass accumulation. Shading greater than 70% reduced the number of leaves, the leaf area and the stem diameter in relation to plants exposed to full sunlight. The results suggest that T. aurea seedlings should be grown under full sunlight or under shading up to 50% to maximize their growth in the nursery and to minimize stress when transferring the seedlings to their final planting sites.

Growth performance of Khaya senegalensis seedlings influenced by provenances and latitudinal gradients in the nursery

2021 ◽  
Vol 17 (1) ◽  
pp. 47-50
Author(s):  
O.A. Iroko ◽  
A.O. Bobadoye ◽  
B.O. Bobadoye
Keyword(s):  
Growth Performance ◽  
Large Scale ◽  
Latitudinal Gradients ◽  
Seedling Height ◽  
Morphological Attributes ◽  
Provenance Trials ◽  
Khaya Senegalensis ◽  
Number Of Leaves ◽  
Collar Diameter ◽  
Seed Provenance

Seedling growth performance is germane and pertinent in plant variables when analyzing tree provenance trials as it indicates its adaptability of the seed to the environments/habitat. The study was undertaken to examine the comparative studies on seedling performance of Khaya senegalensis at nursery stage in Forestry Research Institute of Nigeria. Seeds from four sources in different States in Nigeria: Oyo, Borno, Jigawa and Kano States were collected and planted to observe their morphological attributes. Seedlings variables (Plant height, collar diameter and number of leaves) were observed and recorded fortnightly for sixteen (16) weeks after germination was completed. It was observed that seeds from Oyo state performed best while seeds from Kano state had the least performance. Provenances variation indicate genetic and environmental differences that can be utilized for afforestation programmes and thus, this study recommends the seeds from Oyo state for large scale afforestation since it performed best. Keywords: Khaya senegalensis, seed provenance, seedling height, collar diameter and number of leaves.

scholarly journals Bioremediation of Spent Engine Oil Contaminated Soil by Using Fungus, Penicillium sp.

2016 ◽  
Vol 59 ◽  
pp. 82-91
Author(s):  
Etim Johnson Umana ◽  
Patrick Ishoro Akwaji ◽  
Aniedi Abasi Akpan Markson
Keyword(s):  
Growth Performance ◽  
Contaminated Soil ◽  
Dry Weight ◽  
Engine Oil ◽  
Good Tool ◽  
Penicillium Sp ◽  
Mycelia Growth ◽  
Spent Engine Oil

This study investigated the ability ofPenicillium sp.to bio-remediate spent engine oil contaminated soil bothin vitroandin vivo. In thein vitroassay, mycelium of a seven day old culture ofPenicillium sp. grown on Sabouraud Dextrose Agar (SDA) was punched out using a 0.5mm Cork borer and inoculated on the centre of Petri dishes containing the spent and unspent engine oil and incubated for seven days and daily reading of the mycelia growth obtained using a metre rule. For thein vivoassay, soil received 0 (control), 20/180, 40/360, 60/540, 80/720 and 100ml/900mm concentrations/treatments (inoculation with mycelium ofPenicillium sp.). Seeds ofTelfeira occidentaliswas sown on the soil and assessed for growth performance (plant height, leaf area (using a metre rule) and leaf count (number of leaves) for 7, 14, 21 and 28 Days after Planting (DAP). Results of thein vitroassay showed a significant increase (p<0.05) in the growth diameter ofPenicillium sp.relative to control. Results of thein vivoassay showed that spent engine oil had no significant effect (p<0.05) on the growth performance ofT. occidentalisat 7, 14, 21 and 28 DAP and on fresh and dry weight (g) 28 DAP relative to control. After 28 days of plant growth, the added spent engine oil was no longer detected. The plant began producing pods 61 DAP. This study showed thatPenicillium sp. can biodegrade hydrocarbons present in spent engine oil and as such is a good tool for bioremediation.

EFFECT OF SOIL MEDIA AND DEPTH OF SEED SOWING ON SEED GERMINATION AND SEEDLING GROWTH OF BAHERA, TERMINALA BELLERICA

2017 ◽  
Vol 23 (1) ◽  
Author(s):  
ASTHA GUPTA ◽  
RAMAKANT TEWARI ◽  
S. L. MEENA
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Black Soil ◽  
Red Soil ◽  
Research Centre ◽  
Total Biomass ◽  
Sowing Depth ◽  
Soil Media ◽  
Number Of Leaves ◽  
Collar Diameter

The study was conducted at National Research Centre for Agroforestry, Jhansi (U.P.) India. Fresh seeds of Bahera were sun dried, depulped and subjected to three soil media [Red soil+FYM (1:1), Black soil+FYM (1:1) and Red+Black soil+FYM(1:1:1)] and three sowing depths (2.0, 3.0 and 4.0cm) for seed germination in April month. Results indicated that maximum seed germination (94%) was obtained in Red soil + FYM mediaat 2.0cm sowing depth. This treatment recorded quickest initiation and completion of germination(11and 21 days respectively). Seedling growth in terms of plant height, collar diameter and canopy spread and number of leaves was maximum under Red soil+FYM and minimum under Black soil+FYM. In general, plant growth reduced with increase in depth of sowing. However, the differences among various treatments were largely non-significant. Total biomass air dry ranged between 10.52 to 13.90g/plant across the treatments at 6 months stage.

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