Nitrogen availability, water-filled pore space, and N2O-N fluxes after biochar application and nitrogen fertilization

Carvalho, M. T. de M.; Madari, B. E.; Bastiaans, L.; Oort, P.A.J. van; Leal, W. G. de O.; Souza, Diego Mendes de; Santos, Roberto Carlos dos; Matsushige, I.; Maia, A. de H. N.; Heinemann, A. B.; Meinke, Holger

doi:10.1590/s0100-204x2016000900020

Cited by 4 publications

(4 citation statements)

References 25 publications

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“…In addition, Yanai et al [40] reported that suppressed N 2 O emissions after adding charcoal stemmed from changes in WFPS values rather than the addition of Cl − and SO 4 2− , which were the major anions in charcoal based on laboratory experiments. In the current study, a large decrease in WFPS value (from 70.2% to 45.3%) with BA application was observed compared with the results of other studies [39,40], owing to a greater BA application rate (400 Mg•ha −1 ). Therefore, we observed a further decrease in cumulative N 2 O emission by up to 54.8%, i.e., from 17.…”

Section: Discussioncontrasting

confidence: 50%

“…Similar results with this study were observed by other researchers using ash materials, such as biochar and charcoal. Carvalho et al [39] reported that WFPS value decreased significantly by approximately 10% following the application of 32 Mg•ha −1 of wood biochar in a bean-rice rotated cultivation system. They observed a positive correlation between N 2 O fluxes and WFPS value, indicating that WFPS was a relevant soil variable related to N 2 O emission.…”

Section: Discussionmentioning

confidence: 99%

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Nitrous Oxide Emission and Crop Yield in Arable Soil Amended with Bottom Ash

et al. 2021

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Bottom ash (BA), a byproduct of coal combustion from electric power plants with a porous surface texture and high pH, may influence the physical and chemical properties of upland arable soil associated with nitrous oxide (N2O) emission from upland soil. This study evaluated the use of BA in mitigating N2O emissions from upland arable soil and increasing the crop yield. In a field experiment, N2O emitted from the soil was monitored weekly in a closed chamber over a 2-year period (2018–2019). BA was applied to upland soil at the rates of 0, 200, and 400 Mg·ha−1. Cumulative N2O emission significantly decreased with increasing BA application rate; it decreased by 55% with a BA application rate of 400 Mg·ha−1 compared with the control. Yield-scaled N2O emission decreased with increasing BA application rates of up to 200 Mg·ha−1. Water-filled pore spaces (WFPS) were 70.2%, 52.9%, and 45.3% at the rates of 0, 200, and 400 Mg·ha−1, respectively, during the growing season. For economic viability and environmental conservation, we suggest that BA application at a rate of 200 Mg·ha−1 reduces N2O emissions per unit of crop production.

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Section: Discussioncontrasting

confidence: 50%

Section: Discussionmentioning

confidence: 99%

Nitrous Oxide Emission and Crop Yield in Arable Soil Amended with Bottom Ash

et al. 2021

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“…Subsequently, a solution containing inorganic N, P and K was added to attain the required moisture from analytical grade NH 4 NO 3 and K 2 HPO 4 (equivalent to the recommended dose for sesame in the MD). Soil moisture was adjusted to be equivalent to 70% of the maximum water holding capacity (MWHC) of the initial soil, following other studies [39,40], and at this moisture level both nitrification and denitrification are expected to occur. The incubation experiment was conducted without adjusting bulk density.…”

Section: Incubation Experimentsmentioning

confidence: 99%

Potential Use of Rice Husk Biochar and Compost to Improve P Availability and Reduce GHG Emissions in Acid Sulfate Soil

et al. 2020

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Acid sulfate soil (ASS) has major problems related to phosphorus deficiency and high potential for N2O emissions, as well as strong acidity. The objective of this study was to evaluate the effects of rice husk biochar and compost on P availability and greenhouse gas (GHG) emissions in ASS in in vitro incubation studies. An ASS was amended with two types of rice husk biochar (at rates of 0 g kg−1, 20 g kg−1, and 50 g kg−1, equivalent to 0 Mg ha−1, 20 Mg ha−1, and 50 Mg ha−1, assuming that bulk density was 1 g cm−3 and evenly applied for 10 cm in depth) and compost (at rates of 0 g kg−1, 10 g kg−1, and 20 g kg−1, equivalent to 0 Mg ha−1, 10 Mg ha−1, and 20 Mg ha−1) and incubated. Application of compost increased labile P by 100% and 200% at rates of 10 g kg−1 and 20 g kg−1, respectively. Both biochars showed an increase in NaHCO3-soluble inorganic P by 16% to 30%, decreases in NaOH-soluble inorganic P and NaHCO3-soluble organic P. N2O emissions were significantly decreased by 80% by a biochar with a higher surface area and higher NH4+ adsorption capacity at a rate of 50 g kg−1 as compared with those in un-amended soil. In contrast, compost amendment at a rate of 10 g kg−1 significantly increased N2O emission by 150%. These results suggest that in ASS, whilst compost is more effective in improving P availability, biochar is more effective in mitigating GHG emissions, emphasizing that fundamental characteristics of organic amendments influenced the outcomes in terms of desirable effects.

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“…In a field experiment in central‐western Brazil, Carvalho et al. (2016) did not find interaction of biochar and N fertilization for N 2 O emissions considering 2.5 years of evaluation. In a global meta‐analysis, He et al.…”

Section: Discussionmentioning

confidence: 95%

A data synthesis on the biochar properties and implications for air, soil, and water quality in Brazil

Pôggere

Santana

Barbosa

et al. 2022

Environmental Quality Mgmt

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Biochar has been intensively researched worldwide. In Brazil, there is a variety of feedstock production that can be turned into soil amendments of high performance through biochar conversion, especially solid wastes. However, advances in biochar research in Brazil have not been systematically evaluated to indicate possible gaps and suggest future research for eco-friendly applications. Thus, in this work we evaluated biochar properties and effects on air, water, and soil quality based on data gathered from researches performed in Brazil. Biochar has been mainly evaluated as soil conditioner (37%), material characterization (17%), water treatment (12%), and greenhouse gases emissions (9%). Based on the data synthesis of 68 feedstocks used for biochar production, we observed that the pyrolysis temperature profoundly affects biochar properties. Meta-analysis indicated benefits of biochar addition to soils for chemical, physical, microbiological and biochemical attributes that have resulted in increases in root growth (+30%), and plant shoots (+45%). Pyrolysis temperature and feedstock are key choices to design biochar properties aiming to retain dyes, aromatic hydrocarbon, pesticides, and metals in water and wastewater treatment. It was also observed an increase in CO 2 and a decrease in N 2 O emissions after biochar application to soils in short-term experiments. Although there is a growing interest in the development of electrochemical sensors and biochar-based fertilizers, technological applications of biochar are still incipient in Brazil. Future research should prioritize long-term and mechanistically evaluations of biochar under field conditions and the development of eco-friendly technological applications.

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Nitrogen availability, water-filled pore space, and N2O-N fluxes after biochar application and nitrogen fertilization

Cited by 4 publications

References 25 publications

Nitrous Oxide Emission and Crop Yield in Arable Soil Amended with Bottom Ash

Nitrous Oxide Emission and Crop Yield in Arable Soil Amended with Bottom Ash

Potential Use of Rice Husk Biochar and Compost to Improve P Availability and Reduce GHG Emissions in Acid Sulfate Soil

A data synthesis on the biochar properties and implications for air, soil, and water quality in Brazil

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