Impact of Biochar on Manure Carbon Stabilization and Greenhouse Gas Emissions

Rogovska, Natalia; Laird, David A.; Cruse, Richard M.; Fleming, Pierce; Parkin, T. B.; Meek, D. W.

doi:10.2136/sssaj2010.0270

Cited by 209 publications

(159 citation statements)

References 53 publications

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“…As more volume was taken up by biochar, less starter nutrients were present in the initial mix. The field studies revealed that by amending biochar into soil, it introduced highly stable C into the soil that could reduce the net soil CO 2 equivalent emissions (CO 2 , NO 2 , and CH 4 ) [34][35][36]. The mechanisms involve biochar change in the physical, chemical, and biological environment of the soil [37].…”

Section: Root Substrate Electrical Conductivitymentioning

confidence: 99%

Poinsettia Growth and Development Response to Container Root Substrate with Biochar

et al. 2018

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A greenhouse study was conducted to evaluate the growth and development of poinsettia 'Prestige Red' (Euphorbia pulcherrima) grown in a commercial peat-based potting mix (Sunshine Mix #1) amended with biochar at 0%, 20%, 40%, 60%, 80%, or 100% (by volume) at four different fertigation regimes: F1: 100 to 200 mg·L −1 nitrogen (N), F2: 200 to 300 mg·L −1 N (control), F3: 300 to 400 mg·L −1 N, or F4: 400 to 500 mg·L −1 N. The experiment was a two-factor factorial design with 10 replications for each combination of biochar by fertigation. As the percentage of biochar increased, root substrate pore space and bulk density increased, while container capacity decreased. Root rot and red bract necrosis only occurred in F4 combined with 100% biochar. Plants grown in 40% biochar had a similar growth and development to those in 0% biochar. Up to 80% biochar, plants exhibited no significant change, except in terms of dry weight, which decreased at higher biochar percentages (60% and 80%). In summary, at a fertigation rate of 100 mg·L −1 N to 400 mg·L −1 N, up to 80% biochar could be used as an amendment to peat-based root substrate with acceptable growth reduction and no changes in quality.

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Section: Root Substrate Electrical Conductivitymentioning

confidence: 99%

Poinsettia Growth and Development Response to Container Root Substrate with Biochar

et al. 2018

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“…Some found that biochar had positive effects on soil physical and hydrological properties (Githinji, 2014;Peake et al, 2014) while some reported that biochar application had no effects or negative results on soil physical properties (Busscher et al, 2010;Rogovska et al, 2011;Zhang et al, 2012). These contrasting responses could be as a result of different soil and biochars that had been utilized in previous studies.…”

Section: Biochar Preparationmentioning

confidence: 99%

Enhancement of physical and hydrological properties of a sandy loam soil via application of different biochar particle sizes during incubation period

Esmaeelnejad

Shorafa

Gorji

et al. 2016

Span. j. agric. res.

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In spite of many studies that have been carried out, there is a knowledge-gap as to how different sizes of biochars alter soil properties. Therefore, the main objective of this study was to investigate the effects of different sizes of biochars on soil properties. The biochars were produced at two pyrolysis temperatures (350 and 550°C) from two feedstocks (rice husk and apple wood chips). Produced biochars were prepared at two diameters (1-2 mm and <1 mm) and mixed with soil at a rate of 2% (w/w). Multiple effects of type, temperature and size of biochars were significant, so as the mixture of soil and finer woodchip biochars produced at 550°C had significant effects on all soil properties. Soil aggregation and stabilization of macro-aggregates, values of mean weight diameter and water stable aggregates were improved due to increased soil organic matter as binding agents and microbial biomass. In addition, plant available water capacity, air capacity, S-index, meso-pores and water retention content were significantly increased compared to control. But, saturated hydraulic conductivity (Ks) was reduced due to blockage of pores by biochar particles, reduction of pore throat size and available space for flow and also, high field capacity of biochars. So, application of biochar to soil, especially the finest particles of high-tempered woody biochars, can improve physical and hydrological properties of coarse-textured soils and reduce their water drainage by modification of Ks.

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“…Some researchers have suggested that biochar application in soils might facilitate the decomposition rate of organic matter to maintain nutrients for crops in temperate regions [9][10][11]18,35]. On contrary, in subtropical or tropical regions, it is better to stabilize OM from rapidly decomposing inducing financial lose while reducing compost application for land sustainability.…”

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

confidence: 99%

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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Impact of Biochar on Manure Carbon Stabilization and Greenhouse Gas Emissions

Cited by 209 publications

References 53 publications

Poinsettia Growth and Development Response to Container Root Substrate with Biochar

Poinsettia Growth and Development Response to Container Root Substrate with Biochar

Enhancement of physical and hydrological properties of a sandy loam soil via application of different biochar particle sizes during incubation period

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

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