Impact of biochar addition to soil on greenhouse gas emissions following pig manure application

Troy, Shane M.; Lawlor, Peadar G.; Flynn, Cornelius J. O’; Healy, Mark G.

doi:10.1016/j.soilbio.2013.01.019

Cited by 184 publications

(104 citation statements)

References 38 publications

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“…This could be due largely to the significantly higher emission of CO2 in the first two weeks. Similar results have been reported by some studies [3,9,18], which indicated that labile C in biochars could effectively lead to an increase in CO2 emission because of priming effects. Deenik et al (2011) [37] demonstrated that biochars with high volatile matter (VM) contents also provide a source of bioavailable C, which stimulates microbial growth and increases C mineralization in soils.…”

Section: Co2 Emissions From Soils Amended With the Compost And Biocharssupporting

confidence: 90%

Stabilization of Organic Matter by Biochar Application in Compost-amended Soils with Contrasting pH Values and Textures

et al. 2015

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Food demand and soil sustainability have become urgent concerns because of the impacts of global climate change. In subtropical and tropical regions, practical management that stabilizes and prevents organic fertilizers from rapid decomposition in soils is necessary. This study conducted a short-term (70 days) incubation experiment to assess the effects of biochar application on the decomposition of added bagasse compost in three rural soils with different pH values and textures. Two rice hull biochars, produced through slow pyrolization at 400 °C (RHB-400) and 700 °C (RHB-700), with application rates of 1%, 2%, and 4% (w/w), were separately incorporated into soils with and without compost (1% (w/w) application rate). Experimental results indicated that C mineralization rapidly increased at the beginning in all treatments, particularly in those involving 2% and 4% biochar. The biochar addition increased C mineralization by 7.9%-48% in the compost-amended soils after 70 days incubation while the fractions of mineralized C to applied C significantly decreased. Moreover, the estimated maximum of C mineralization amount in soils treated with both compost and biochar were obviously lower than expectation calculated by a double exponential model (two pool model). Based on the micromorphological observation, added compost was wrapped in the soil aggregates formed after biochar application and then may OPEN ACCESS Sustainability 2015, 7 13318 be protected from decomposing by microbes. Co-application of compost with biochar may be more efficient to stabilize and sequester C than individual application into the studied soils, especially for the biochar produced at high pyrolization temperature.

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Section: Co2 Emissions From Soils Amended With the Compost And Biocharssupporting

confidence: 90%

Stabilization of Organic Matter by Biochar Application in Compost-amended Soils with Contrasting pH Values and Textures

et al. 2015

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“…N 2 O forms in soils as a result of microbiological nitrification and denitrification. The BC application contributed to change of soil conditions making them more favorable for nitrifiers due to enhancing aeration and increasing pH of soils as well as adsorption of nitrification inhibitors [1,14,[22][23][24]. However, the adsorption of NH 4 + on the BC surface or in its pores can result in the reduction of NH 4 + availability for nitrifiers [22].…”

Section: Introductionmentioning

confidence: 99%

Changes in Biological and Physical Parameters of Soils With Different Texture After Biochar Application

Buchkina¹,

Balashov²,

Šimanský³

et al. 2017

S-h. biol.

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A b s t r a c tMaintaining a favorable microbial and physical state of soils using new management practices is one of the key directions of sustainable land-use. Application of biochar (BC) is one of the new ways to improve soil quality and sustainability by increasing carbon sequestration and making significant changes in soil properties. Slow and fast pyrolysis is used to produce BC from different feedstock. Technological conditions of pyrolysis and feedstock type have key impacts on BC properties and its interaction with soils. Many previous studies have revealed a positive effect of BC on soil properties and crop yields. Nevertheless, there are uncertainties in the understanding of BC effects on microbial processes of nitrogen and carbon transformation in soils. In the present study, two types of BC were used: BC1 and BC2 were produced by fast and slow pyrolysis of wooden feedstock, respectively. The aims of the study were, firstly, to assess differences in the effects of BC1 and BC2 on hydrophysical properties of sandy and clayey loam soils, and, secondly, to assess the effects of differences in soil texture on the degree of impacts of BCs on soil nitrification and denitrification. Samples of sandy and clayey loam gleyic Fluvisols (Slovakia) were used in the experiment. An amount of the applied BC on a hectare-scale was equal to 15 and 30 tones. Water retention of the soil samples was measured using a pressure-plate apparatus at water potentials from 0.1 to 300 kPa. Nitrification and denitrification rates were determined in laboratory conditions by measuring nitrous oxide accumulation in flasks in which the soils were incubated for 48 hours at 25 С. Soil moisture content for nitrification and denitrification was equal to 48-55 % of the full saturation and 100 % saturation, respectively. The results indicate that BC1 and BC2 application increased water retention more for the sandy soil than for the clayey loam soil in the whole range of water potentials. Of the two biochars, BC2 had a greater influence on the water retention of both soils. Application of BC1 resulted in a significant decrease (p < 0.01) while application of BC2 produced only an insignificant decrease in nitrification rates in the clayey loam soil. BC1 and BC2 had no effect on nitrification rates in the sandy soil. Moreover, the application of the BCs at both rates contributed to a greater decrease in nitrification rates in the clayey loam soil than in the sandy soil.

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“…Direct GHG emissions (N 2 O, carbon dioxide (CO 2 ) and CH 4 ) were analyzed over a 28-d period in accordance with Troy et al (2013). Samples were taken on the day of slurry application (day 1) and subsequently on days 2, 3, 4, 5, 6, 7, 9, 11, 13, 15, 19, 23 and 28.…”

Section: Greenhouse Gas Emissionsmentioning

confidence: 99%

Impact of chemically amended pig slurry on greenhouse gas emissions, soil properties and leachate

Flynn¹,

Healy²,

Lanigan³

et al. 2013

Journal of Environmental Management

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The effectiveness of chemical amendment of pig slurry to ameliorate phosphorus (P) losses in runoff is well studied, but research mainly has concentrated only on the runoff pathway. The aims of this study were to investigate changes to leachate nutrient losses, soil properties and greenhouse Morgan's phosphorus and water extractable P content of the soil to that of the soil-only treatment, indicating that they have the ability to reduce P loss in leachate following slurry application. There were no significant differences between treatments for nitrogen (N) or carbon (C) in leachate or soil, indicating no deleterious impact on reactive N emissions or soil C cycling. Chemical amendment posed no significant change to GHG emissions from pig slurry, and in the cases of alum and PAC, reduced cumulative N 2 O and CO 2 losses. Chemical amendment of land applied pig slurry can reduce P in runoff without any negative impact on nutrient leaching and GHG emissions. Future work must be conducted to ascertain if more significant reductions in GHG emissions are possible with chemical amendments.

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Impact of biochar addition to soil on greenhouse gas emissions following pig manure application

Cited by 184 publications

References 38 publications

Stabilization of Organic Matter by Biochar Application in Compost-amended Soils with Contrasting pH Values and Textures

Stabilization of Organic Matter by Biochar Application in Compost-amended Soils with Contrasting pH Values and Textures

Changes in Biological and Physical Parameters of Soils With Different Texture After Biochar Application

Impact of chemically amended pig slurry on greenhouse gas emissions, soil properties and leachate

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