Improving benzo(a)pyrene biodegradation in soil with wheat straw-derived biochar amendment: performance, microbial quantity, CO2 emission, and soil properties

2021 ◽  
pp. 105132
Author(s):  
Junyuan Guo ◽  
Shuqing Yang ◽  
Qianlan He ◽  
Yihua Chen ◽  
Fei Zheng ◽  
...  
Keyword(s):  
Soil Properties ◽  
Wheat Straw ◽  
Co2 Emission ◽  
Biochar Amendment ◽  
Biodegradation In Soil

scholarly journals Effects of Maize Residue Biochar Amendments on Soil Properties and Soil Loss on Acidic Hutton Soil

Agronomy ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 256 ◽  
Author(s):  
Patrick Nyambo ◽  
Thembalethu Taeni ◽  
Cornelius Chiduza ◽  
Tesfay Araya
Keyword(s):  
Soil Properties ◽  
Soil Loss ◽  
Crop Productivity ◽  
Soil Sampling ◽  
Rainfall Simulation ◽  
Incubation Experiment ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Soil Weight ◽  
Biochar Amendment

Soil acidification is a serious challenge and a major cause of declining soil and crop productivity in the Eastern parts of South Africa (SA). An incubation experiment investigated effects of different maize residue biochar rates on selected soil properties and soil loss in acidic Hutton soils. Biochar amendment rates were 0%, 2.5%, 5%, 7.5%, and 10% (soil weight) laid as a completely randomized design. Soil sampling was done on a 20-day interval for 140 days to give a 5 × 7 factorial experiment. Rainfall simulation was conducted at 60, 100 and 140 days after incubation to quantify soil loss. Relative to the control biochar amendments significantly improved soil physicochemical properties. After 140 days, biochar increased soil pH by between 0.34 to 1.51 points, soil organic carbon (SOC) by 2.2% to 2.34%, and microbial activity (MBC) by 496 to 1615 mg kg−1 compared to control. Soil aggregation (MWD) changes varied from 0.58 mm to 0.70 mm for the duration of the trial. Soil loss significantly decreased by 27% to 70% under biochar amendment compared to control. This indicates that maize residue biochar application has the potential to improve the soil properties and reduce soil loss in the degraded acidic Hutton soil.

Biochar amendment to soils with contrasting organic matter level: effects on N mineralization and biological soil properties

GCB Bioenergy ◽  
2013 ◽  
Vol 7 (1) ◽  
pp. 135-144 ◽  
Author(s):  
Nele Ameloot ◽  
Steven Sleutel ◽  
K. C. Das ◽  
Jegajeevagan Kanagaratnam ◽  
Stefaan de Neve
Keyword(s):  
Organic Matter ◽  
Soil Properties ◽  
N Mineralization ◽  
Biochar Amendment

scholarly journals Effect of straw biochar amendment on tobacco growth, soil properties, and rhizosphere bacterial communities

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jiayu Zheng ◽  
Jixu Zhang ◽  
Lin Gao ◽  
Rui Wang ◽  
Jiaming Gao ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Soil Properties ◽  
Bacterial Communities ◽  
Agronomic Traits ◽  
Diversity Indices ◽  
Community Diversity ◽  
High Dose ◽  
Rhizosphere Soils ◽  
Tobacco Growth ◽  
Biochar Amendment

AbstractBiochar is an effective soil conditioner. However, we have limited understanding of biochar effects on the tobacco growth and bacterial communities in rhizosphere. The aim of this study was to investigate the effects of different straw biochar amendment (0, 2, 10, and 50 g/kg dry soil) on tobacco growth, soil properties, and bacterial communities in rhizosphere by pot trials. Most of tobacco agronomic traits increased when the application rate varied from 0 to 10 g/kg, but were inhibited by 50 g/kg of biochar application. Soil pH, SOC, available nutrients and soil urease, invertase, and acid phosphatase activities were all increased with the biochar application, whereas catalase activity decreased or remained unchanged. The OTUs and bacterial community diversity indices differed with the biochar application doses in rhizosphere and non-rhizosphere soils. And significant differences in bacterial communities were found between the rhizosphere and non-rhizosphere soils despite the biochar addition. Firmicutes, Proteobacteria, Acidobacteria, Bacteroidetes, and Actinobacteria were the dominant phyla in all soil samples, but they had different abundances in different treatment influenced by the rhizosphere and biochar effect. The high dose of biochar (50 g/kg) decreased the similarity of soil bacterial community structure in rhizosphere compared with those in non-rhizosphere soil. These results provide a better understanding of the microecological benefits of straw biochar in tobacco ecosystem.

Review of the Effects of Biochar Amendment on Soil Properties and Carbon Sequestration

2016 ◽  
Vol 20 (1) ◽  
pp. 04015013 ◽  
Author(s):  
Tao Xie ◽  
Bala Yamini Sadasivam ◽  
Krishna R. Reddy ◽  
Chengwen Wang ◽  
Kurt Spokas
Keyword(s):  
Carbon Sequestration ◽  
Soil Properties ◽  
Biochar Amendment

scholarly journals Impacts of prescribed burning on soil greenhouse gas fluxes in a suburban native forest of south-eastern Queensland, Australia

2015 ◽  
Vol 12 (21) ◽  
pp. 6279-6290 ◽  
Author(s):  
Y. Zhao ◽  
Y. Z. Wang ◽  
Z. H. Xu ◽  
L. Fu
Keyword(s):  
Gas Exchange ◽  
Exchange Rates ◽  
Soil Properties ◽  
Greenhouse Gas ◽  
Co2 Emission ◽  
Prescribed Burning ◽  
Surface Soil ◽  
C And N ◽  
Ch4 Uptake ◽  
Surface Soil Properties

Abstract. Prescribed burning is a forest management practice that is widely used in Australia to reduce the risk of damaging wildfires. Prescribed burning can affect both carbon (C) and nitrogen (N) cycling in the forest and thereby influence the soil-atmosphere exchange of major greenhouse gases, i.e. carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O). To quantify the impact of a prescribed burning (conducted on 27 May 2014) on greenhouse gas exchange and the potential controlling mechanisms, we carried out a series of field measurements before (August 2013) and after (August 2014 and November 2014) the fire. Gas exchange rates were determined in four replicate plots which were burned during the combustion and in another four adjacent unburned plots located in green islands, using a set of static chambers. Surface soil properties including temperature, pH, moisture, soil C and N pools were also determined either by in situ measurement or by analysing surface 10 cm soil samples. All of the chamber measurements indicated a net sink of atmospheric CH4, with mean CH4 uptake ranging from 1.15 to 1.99 mg m−2 d−1. Prescribed burning significantly enhanced CH4 uptake as indicated by the significant higher CH4 uptake rates in the burned plots measured in August 2014. In the following 3 months, the CH4 uptake rate was recovered to the pre-burning level. Mean CO2 emission from the forest soils ranged from 2721.76 to 7113.49 mg m−2 d−1. The effect of prescribed burning on CO2 emission was limited within the first 3 months, as no significant difference was observed between the burned and the adjacent unburned plots in both August and November 2014. The CO2 emissions showed more seasonal variations, rather than the effects of prescribed burning. The N2O emission in the plots was quite low, and no significant impact of prescribed burning was observed. The changes in understory plants and litter layers, surface soil temperature, C and N substrate availability and microbial activities, following the prescribed burning, were the factors that controlled the greenhouse gas exchanges. Our results suggested that the low-intensity prescribed burning would decrease soil CO2 emission and increase CH4 uptake, but this effect would be present within a relatively short period. Only slight changes in the surface soil properties during the combustion and very limited impacts of prescribed burning on the mineral soils supported the rapid recovery of the greenhouse gas exchange rates.

On the spatial and temporal dependence of CO2 emission on soil properties in sugarcane (Saccharum spp.) production

2015 ◽  
Vol 148 ◽  
pp. 127-132 ◽  
Author(s):  
Mara Regina Moitinho ◽  
Milton Parron Padovan ◽  
Alan Rodrigo Panosso ◽  
Daniel De Bortoli Teixeira ◽  
Antonio Sergio Ferraudo ◽  
...  
Keyword(s):  
Soil Properties ◽  
Co2 Emission ◽  
Temporal Dependence ◽  
Saccharum Spp

scholarly journals Woodchip biochar with or without synthetic fertilizers affects soil properties and available phosphorus in two alkaline, chernozemic soils

2016 ◽  
Vol 96 (4) ◽  
pp. 472-484 ◽  
Author(s):  
J.A. Surani Chathurika ◽  
Darshani Kumaragamage ◽  
Francis Zvomuya ◽  
Olalekan O. Akinremi ◽  
Donald N. Flaten ◽  
...  
Keyword(s):  
Soil Properties ◽  
Soil Ph ◽  
Aggregate Stability ◽  
Exchange Capacity ◽  
Interactive Effects ◽  
Available Phosphorus ◽  
P Fractions ◽  
Olsen P ◽  
Synthetic Fertilizers ◽  
Biochar Amendment

Fertility enhancement with biochar application is well documented for tropical acidic soils; however, benefits of biochar coapplied with synthetic fertilizers (SFs) on soil fertility are not well documented, particularly for alkaline chernozems. We examined the short-term interactive effects of woodchip biochar amendment with fertilizers on selected soil properties, available phosphorus (P), and P fractions of two alkaline Chernozems from Manitoba. Treatments were (1) urea and monoammonium phosphate fertilizers, (2) biochar at 10 g kg−1, (3) biochar at 20 g kg−1, (4) biochar at 10 g kg−1with fertilizers, (5) biochar at 20 g kg−1with fertilizers, and (6) a control. Treated soils were analysed for pH, electrical conductivity (EC), and Olsen P concentration biweekly, and for P fractions, cation exchange capacity (CEC), organic carbon (OC), and wet aggregate stability after 70 d of incubation. Biochar amendment without fertilizers significantly increased soil pH and CEC but had no effect on EC, while coapplication with fertilizers significantly increased Olsen P and labile P concentrations. When coapplied with fertilizers, biochar did not significantly increase soil pH relative to the control. Results suggest that biochar improved soil properties and available P in alkaline Chernozems, and the beneficial effects were enhanced when coapplied with SFs.

scholarly journals Effect of Tillage Practices and Rice Straw Management on Soil Environment and Carbon Dioxide Emission

2017 ◽  
Vol 15 (1) ◽  
pp. 127-142 ◽  
Author(s):  
MM Rahman ◽  
JC Biswas ◽  
M Maniruzzaman ◽  
AK Choudhury ◽  
F Ahmed
Keyword(s):  
Carbon Dioxide ◽  
Soil Properties ◽  
Rice Straw ◽  
Co2 Emission ◽  
Carbon Dioxide Emission ◽  
Management Options ◽  
Minimum Tillage ◽  
Tillage Practices ◽  
Tillage Operations ◽  
Straw Application

Carbon (C) inputs and tillage intensity impinge on C degradation and thus CO2 emission and soil properties get influenced. Information on CO2 emission and soil properties under different tillage practices and straw application in rice based cropping system in Bangladesh is lacking. The effects of rice straw and tillage operations on CO2 emission and soil properties were quantified in four consecutive seasons of transplanted Aman and Boro rice grown under two tillage operations (minimum and traditional) and three levels of rice straw (control, incorporation and mulch) during 2010 to 2012. Irrespective of tillage practices, CO2 emission peak reached after 3-4 weeks of straw application. Carbon dioxide emission ranged from 26 to 59 kg ha-1 day-1 under minimum tillage and 25 to 96 kg ha-1 day-1 under traditional tillage. Minimum tillage accumulated more C in soil, which could be attributed to lower rates of emission and straw degradation. Carbon degradation rate constants, k were 0.000300 and 0.000394 (day-1) under minimum and traditional tillage, respectively. Small increment in soil C might help reducing CO2 in the atmosphere. Mineralization of straw increased nutrient contents and thereby improved the soil fertility and availability to the crops for nutrients’ uptake. Traditional tillage significantly reduced soil bulk density and increased field capacity of the soil, whereas in addition, rice straw application furthermore increased permanent wilting point and available water content in the soil. The present study may help in identifying suitable tillage and residue management options in reducing CO2 emission from rice fields.The Agriculturists 2017; 15(1) 127-142

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