Effect of silver nano-particles on soil microbial growth, activity and community diversity in a sandy loam soil

2017 ◽  
Vol 220 ◽  
pp. 504-513 ◽  
Author(s):  
A.D. Samarajeewa ◽  
J.R. Velicogna ◽  
J.I. Princz ◽  
R.M. Subasinghe ◽  
R.P. Scroggins ◽  
...  
Keyword(s):  
Microbial Growth ◽  
Sandy Loam ◽  
Sandy Loam Soil ◽  
Community Diversity ◽  
Nano Particles ◽  
Soil Microbial ◽  
Growth Activity ◽  
Loam Soil

scholarly journals Changes in soil microbial respiration and physicochemical properties following bonny light crude oil contamination of sandy loam soil

2020 ◽  
Vol 22 (1) ◽  
pp. 153-163
Author(s):  
C.N. Eze ◽  
P.I. Orjiakor ◽  
U.J. Ebeifenadi
Keyword(s):  
Physicochemical Properties ◽  
Crude Oil ◽  
Microbial Respiration ◽  
Sandy Loam ◽  
Sandy Loam Soil ◽  
Oil Contamination ◽  
Light Crude Oil ◽  
Soil Microbial ◽  
Crude Oil Contamination ◽  
Loam Soil

This study was undertaken to investigate the effects of Bonny light crude oil contamination of sandy loam soil on aspects of microbial metabolism and physicochemical properties of the soil. Bonny light crude oil (specific gravity = 0.81) was used at eight different levels (0.5%, 1.0%, 2.0%, 2.5%, 5.0%, 10.0%, 15.0% or 20.0% v/w of soil) for the controlled pollution of pristine soil samples, each weighing 1 kg. The experiment lasted for eightweeks. Results of the effects of crude oil on the physicochemical properties of the soil showed that high levels of the oil significantly (p< 0.05) increased soil organic matter but had no significant effect on the pH and moisture content. With the exception of organic carbon, the levels of bioavailable nitrogen, sodium, potassium, calcium, magnesium, sulphur and phosphorus in the test samples with higher levels of crude oil (5.0%, 10.0%, 15.0% and 20.0%) were significantly reduced when compared to their levels in the controls. Similarly, higher levels of the oil significantly (p<0.05) reduced soil microbial phospholipid synthesis and CO emission. 2 Correlation analysis using the Pearson's correlation model showed a positive correlation between soil CO and 2 phospholipid (r = 0.74). Keywords: Contamination, Crude oil, Microbial respiration, Physicochemical properties.

scholarly journals Effect of Animal Waste Based Digestate Fertilization on Soil Microbial Activities, Greenhouse Gas Emissions and Spring Wheat Productivity in Loam and Sandy Loam Soil

Agronomy ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1281
Author(s):  
Modupe Olufemi Doyeni ◽  
Ausra Baksinskaite ◽  
Skaidre Suproniene ◽  
Vita Tilvikiene
Keyword(s):  
Spring Wheat ◽  
Sandy Loam ◽  
Crop Productivity ◽  
Sandy Loam Soil ◽  
Chicken Manure ◽  
Soil Types ◽  
Pig Manure ◽  
Microbial Activities ◽  
Soil Microbial ◽  
Loam Soil

The increasing quantities of organic residues are becoming one of the most important problems for climate change mitigation. Sustainable utilization technologies are required to minimize the effect of recycling on the environment. Nevertheless, treated residues should be part of the circular bioeconomy. One of the most promising processes is the biogas system, with the final products biogas and digestate, which contain valuable nutrients and are therefore suitable as agricultural fertilizers. However, there is lack of research data on the effectiveness of digestate on environmental factors including soil quality as well as crop productivity and quality. In this study, we compare the roles of different digestates (chicken manure digestate, cow manure digestate, and pig manure digestate) on spring wheat productivity, soil microbial activities, and greenhouse gas emissions in loam and sandy loam soil under controlled climate conditions. The liquid digestate applied was equivalent to 170 kg N ha−1 of total N presented. Overall, results showed that the two soil types responded differently to the addition of the digestates, and the benefits depended on soil characteristics as well as on the type of the digestate applied. There was a higher effect on soil microbial activity in sandy loam soil compared to that of loam soil. Chicken manure digestate had the highest value of dehydrogenase activity and soil microbial biomass C of 9.23 µg TPFg−1 h−1 and 175.6 µg g−1 across the two soil types. CO2 and N2O emissions were moderately higher in loam soil when compared to that of sandy loam soil. The highest CO2 peak emission at 0.0107 µg ha−1 h−1 occurred in pig manure digestate in the sandy loam soil, and regular peak patterns observed in loam soil fertilized with pig digestate manure. Chicken manure digestate had the highest peak emissions across both soil types at 0.007950 mg ha−1 h−1 and 0.5667 mg ha−1 h−1 in the loam and sandy loam soil, respectively. The biomass yield varied across the soil types irrespective of the digestate applied. The agricultural benefits of digestates in different receiving soil ecosystems supplying essential nutrients for crop productivity, coupled with its environmental benefits, makes it an encouraging prospect in temperate climate zones.

scholarly journals A framework for refining soil microbial indices as bioindicators during decomposition of various organic residues in a sandy loam soil

2015 ◽  
Vol 7 (2) ◽  
pp. 700-708 ◽  
Author(s):  
Sandeep Sharma ◽  
Jatinder Kaur ◽  
H. S. Thind ◽  
Yadvinder Singh ◽  
Neha Sharma ◽  
...  
Keyword(s):  
Microbial Biomass ◽  
Soil Quality ◽  
Biochemical Composition ◽  
Crop Residues ◽  
Sandy Loam ◽  
Sandy Loam Soil ◽  
Soil Microbial ◽  
Loam Soil ◽  
Microbial Indices ◽  
Amended Soil

Assessment of soil quality is an invaluable tool in determining the sustainability and environmental impact of agricultural ecosystems. Soil microbial indices like microbial biomass and microbial activity are important criteria for the determination of soil quality. Laboratory incubation study was undertaken to examine the influence of eight crop residues widely varying in biochemical composition on the periodic changes in important soil microbial indices {(microbial (Cmic: Corg), metabolic (qCO2), carbon mineralization (qC) and microbial biomass change rate (qM) quotients)} at 28 days and 63 days after incubation (DAI) in a sandy loam soil. A. sativa amended soil showed maximum soil respiration rate (14.23 mg CO2-C g-1 soil day-1) whereas T. aestivum amended soil showed maximum microbial biomass C (790 µg/g). The metabolic quotient among different crop residues ranged from 11.1 to 19.8 μg CO2-C μg-biomass-C-1 h-1 at 63 DAI. The results indicate that incorporation of different crop residues has positive effect on microbial flora and their activity. Microbial quotient (Cmic:Corg) was significantly positively correlated with microbial biomass carbon (MBC), qC and qM. The study suggests that the biochemical composition of different crop residues seems to be of better option for long term sustainable crop production with maintenance of soil quality in a sandy loam soil.

Effect of paddy straw burning on soil microbial dynamics in sandy loam soil of Indo-Gangetic plains

2019 ◽  
Vol 16 ◽  
pp. 100469 ◽  
Author(s):  
Ajay Kumar ◽  
Krash Kumar Kushwaha ◽  
Surender Singh ◽  
Yashbir Singh Shivay ◽  
Mahesh Chand Meena ◽  
...  
Keyword(s):  
Sandy Loam ◽  
Sandy Loam Soil ◽  
Microbial Dynamics ◽  
Paddy Straw ◽  
Gangetic Plains ◽  
Soil Microbial ◽  
Loam Soil ◽  
Straw Burning

Emissions of nitrous oxide and nitric oxide associated with the decomposition of arable crop residues on a sandy loam soil in Eastern England

Agronomie ◽  
2002 ◽  
Vol 22 (7-8) ◽  
pp. 731-738 ◽  
Author(s):  
Roland Harrison ◽  
Sharon Ellis ◽  
Roy Cross ◽  
James Harrison Hodgson
Keyword(s):  
Nitric Oxide ◽  
Nitrous Oxide ◽  
Crop Residues ◽  
Sandy Loam ◽  
Sandy Loam Soil ◽  
Arable Crop ◽  
Loam Soil

INFLUENCE OF UNCONVENTIONAL FERTILIZERS ON MICROBIOLOGICAL ACTIVITY OF SODDY-PODZOLY SANDY SOIL

2020 ◽  
Vol 18 (4) ◽  
pp. 84-87
Author(s):  
Yu.V. Leonova ◽  
◽  
T.A. Spasskaya ◽  
Keyword(s):  
Sewage Sludge ◽  
Sandy Soil ◽  
Sandy Loam ◽  
Sandy Loam Soil ◽  
Microbiological Activity ◽  
Coffee Waste ◽  
Loam Soil

The change in the microbiological activity of sod-podzolic sandy loam soil when using coffee waste and sewage sludge as a fertilizer for oats in comparison with traditional fertilizers is considered. During the study, it was determined that the predominant groups were bacteria and actinomycetes. Bacilli and fungi are few in number. The introduction of sewage sludge and coffee waste into the sod-podzolic sandy loam soil at a dose of 10 t / ha increases the activity of the microflora of the sod-podzolic sandy loam soil, which increases the effective and potential fertility.

Chloride and Lithium Transport in Large Arrays of Undisturbed Silt Loam and Sandy Loam Soil Columns

2004 ◽  
Vol 3 (1) ◽  
pp. 316
Author(s):  
M. Saleem Akhtar ◽  
Tammo S. Steenhuis ◽  
Brian K. Richards ◽  
Murray B. McBride
Keyword(s):  
Sandy Loam ◽  
Sandy Loam Soil ◽  
Silt Loam ◽  
Soil Columns ◽  
Lithium Transport ◽  
Loam Soil

scholarly journals A Modified Pressure–Sinkage Model for Studying the Effect of a Hard Layer in Sandy Loam Soil

2021 ◽  
Vol 11 (12) ◽  
pp. 5499
Author(s):  
Nihal D. Salman ◽  
György Pillinger ◽  
Muammel M. Hanon ◽  
Péter Kiss
Keyword(s):  
Bearing Capacity ◽  
Sandy Loam ◽  
Sandy Loam Soil ◽  
High Fidelity ◽  
Load Bearing Capacity ◽  
Soil Thickness ◽  
Load Bearing ◽  
Hard Layer ◽  
Loam Soil ◽  
New Perspective

The applicability of the typical pressure–sinkage models used to characterize the soil’s bearing properties is limited to homogeneous soils (infinite thickness) that have no hard layer. At a given depth, a hard layer can have a considerable impact on the soil’s load-bearing capacity. It is thus necessary to alter the pressure–sinkage equation by taking this condition into account when assessing the load-bearing capacity. The present paper aims to determine a simple, high-fidelity model, in terms of soil characterization, that can account for the hard layer affection. To assess hard layer affection in this paper, a plate sinkage test (bevameter) was conducted on sandy loam soil. To this end, the soil was prepared by considering three bulk densities and two soil thickness levels at 7–9% moisture content levels. According to the results, this paper put forth a new perspective and related equations for characterizing bearing performance. The sinkage modulus (k) is an intrinsic soil parameter that has a determined unit of N/cm2 and is significant for managing the bearing performance. The results showed that the new modulus sinkage model incorporates the main factor of the rigid layer effect involving high fidelity that the conventional models have failed to account for.

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