Influence of Willow Biochar Amendment on Soil Nitrogen Availability and Greenhouse Gas Production in Two Fertilized Temperate Prairie Soils

Hangs, R.D.; Ahmed, Hasan Pervej; Schoenau, Jeff J.

doi:10.1007/s12155-015-9671-5

Cited by 44 publications

(34 citation statements)

References 95 publications

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“…Soil nitrogen availability has been defined as the amount of mineral nitrogen ( and ) in soil which could be directly taken up by plants 54 55 56 . Microbial nitrification, denitrification and respiration played important roles in regulating soil nitrogen availability 57 58 59 .…”

Section: Discussionmentioning

confidence: 99%

Microbial nitrification, denitrification and respiration in the leached cinnamon soil of the upper basin of Miyun Reservoir

Cai

Zhang

et al. 2017

Sci Rep

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Leached cinnamon soil is the main agricultural soil distributed in the North China Plain. In this research, leached cinnamon soil samples were collected in the upper basin of Miyun Reservoir (northeast of Beijing, China). The BaPS method (Barometric Process Separation) was applied to measure nitrification, denitrification and respiration rates. The rates of nitrification, denitrification and respiration were 0–120.35 μg N/kg SDW h, 0–246.86 μg N/kg SDW h and 0.17–225.85 μg C/kg SDW h (Soil Dry Weight, SDW), respectively. The emission rates of CO2 and NxOy through nitrification, denitrification and respiration were 1.00–547.80 and 6.00–4850.65 μmol/h, respectively. The analysis of relationships between nitrification, denitrification and respiration rates indicated that these three microbial processes were interacted, which posed impacts on soil nitrogen availability. As indicated by the results, C:N ratio coupled with content could be taken as the indicators of content, which is usually the predominant form of N available to plants growing in soil. Results showed that content was the highest (i.e., >62.4 mg/kg) when C:N ratio was 5.30–8.40, meanwhile content was 3.71–4.39 mg/kg. Nevertheless, content was the lowest (i.e., <6.40 mg/kg) when C:N ratio was 9.2–12.10, meanwhile content was 3.41–4.35 mg/kg.

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Section: Discussionmentioning

confidence: 99%

Microbial nitrification, denitrification and respiration in the leached cinnamon soil of the upper basin of Miyun Reservoir

Cai

Zhang

et al. 2017

Sci Rep

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“…Some previous studies indicated that biochar application is considered to be effective in decreasing N 2 O emissions and the mechanism might be influenced by soil pH, water-filled pore spaces (WFPS), soil N availability, and soil microbial immobilization. [13,17,25] Previous studies showed that biochar application can increase soil pH. [46] Yanai et al [26] reported that the activity of N 2 O reductase is stimulated by biochar addition, whereas…”

Section: Effects Of Biochar and Washed Biochar With Or Without N Fertmentioning

confidence: 99%

“…[2,3] Previous studies have shown that soil CH 4 emissions were either increased [4][5][6][7][8][9] or decreased after biochar application. [10][11][12][13][14][15] Similarly, N 2 O emissions might be increased or decreased after biochar application with variations in pyrolysis conditions and feedstock. [16,17] Dissolved organic C, which is a small proportion of soil organic matter (SOM), is one of the most mobile and active C pools and thus, plays an important role in the global C cycle and microbial biomass N content in soil ecosystems.…”

Section: Introductionmentioning

confidence: 99%

Effects of Water‐Washed Biochar on Soil Properties, Greenhouse Gas Emissions, and Rice Yield

Wang

Liu

et al. 2018

CLEAN Soil Air Water

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Biochar application might be a newly agricultural method for improving soil quality and carbon sequestration by its special physical and chemical properties, which has generated great interest for scientists and policy makers. However, the physical structure of biochar and its effect on N2O and CH4 emissions are not yet clear. The effect of bamboo biochar and water‐washed bamboo biochar with or without N fertilization on greenhouse gas emissions, soil properties, and rice yield in a pot experiment were investigated. The results showed that biochar application increased soil pH, total N content, dissolved organic carbon (DOC), and rice plant growth. Although biochar application increased DOC content, N2O and CH4 emissions decreased. The soil NnormalH4+ and NnormalO3− contents were significantly decreased by biochar application, indicating that bamboo biochar has a remarkable ability to absorb NnormalH4+ and NnormalO3−. However, no significant differences in N2O emission were observed between biochar and washed biochar treatment. The CH4 emission in the washed biochar treatment was decreased to a greater extent than in the unwashed biochar, indicating that washed biochar has a greater inhibitory effect on CH4 emission than does unwashed biochar, and that the stable physical structure of biochar might be an important factor for reducing CH4 emissions. Additional studies are needed to investigate the role of functional microorganism in order to better understand the biochar on greenhouse gas emissions from paddy soils.

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“…Only few studies have examined the effect of biochar on available nitrogen concentrations associated with urea-N addition (Gao and Cai 2015;Hangs et al 2015), and no researchers have detected how biochar affected the urea-N transformation in soil. In the present study, the authors found that biochar significantly accelerated urea hydrolysis and increased the soil available nitrogen content greatly at the beginning of incubation.…”

Section: Effect Of Biochar On Soil Microbial Biomassmentioning

confidence: 99%

Maize Stover Biochar Accelerated Urea Hydrolysis and Short-term Nitrogen Turnover in Soil

Liu¹,

He²,

Lan³

et al. 2017

BioResources

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A soil incubation experiment was conducted to investigate the effect of biochar application (2% w/w) on urea hydrolysis and inorganic nitrogen accumulation. Fresh biochars were produced from maize stover that was pyrolyzed at 300 °C, 500 °C, and 700 °C. Then the matured biochars were obtained via a 50 days maturing process. Biochar prepared at 700 °C strongly accelerated the urea hydrolysis and increased soil pH. Fresh biochar, especially when pyrolyzed at low temperature, contained a relatively high concentration of labile carbon and 43% to 64% could be oxidized within 40 days of maturing incubation. The labile carbon in fresh biochars led to microbes thriving and resulted in an accelerated shortterm nitrogen (N) turnover, i.e., at an early stage of incubation, fresh biochar increased mineralization of soil organic N by 79 mg·kg −1 to 449 mg·kg −1 . However, a reduction of soil available N contents induced by microbial immobilization effect was observed at the end of incubation. The authors concluded that aged biochar was suitable for simultaneous soil amendment with urea rather than newly produced biochar. This is because aged biochar can avoid high soil available N accumulation; thus it can decrease the risk of inorganic N leaching loss.

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Influence of Willow Biochar Amendment on Soil Nitrogen Availability and Greenhouse Gas Production in Two Fertilized Temperate Prairie Soils

Cited by 44 publications

References 95 publications

Microbial nitrification, denitrification and respiration in the leached cinnamon soil of the upper basin of Miyun Reservoir

Microbial nitrification, denitrification and respiration in the leached cinnamon soil of the upper basin of Miyun Reservoir

Effects of Water‐Washed Biochar on Soil Properties, Greenhouse Gas Emissions, and Rice Yield

Maize Stover Biochar Accelerated Urea Hydrolysis and Short-term Nitrogen Turnover in Soil

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