Decreased soil microbial biomass and nitrogen mineralisation with Eucalyptus biochar addition to a coarse textured soil

Dempster, Daniel N.; Gleeson, Deirdre; Solaiman, Zakaria M.; Jones, Davey L.; Murphy, Daniel V.

doi:10.1007/s11104-011-1067-5

Cited by 425 publications

(234 citation statements)

References 58 publications

Supporting

Mentioning

205

Contrasting

Unclassified

Order By: Relevance

“…Dempster et al [15] therefore argued that this weakened the case for biochar reducing leaching via adsorption of NO 3 − (despite the fact that the biochar used was capable of NO 3 − adsorption). Thus the authors went on to propose that the observed reductions in NO 3 − leaching were the result of reduced rates of nitrification rather than NO 3 − adsorption, since the biochar was also known to inhibit nitrification [34]. This rationale concurs with the results of Kameyama et al [14], who found no differences in cumulative NO 3 − leaching from a sandy soil over a shorter experimental period when treating a soil with a biochar known to be NO 3 − retentive.…”

Section: Dissolved Organic Nitrogen Retention and Leachingmentioning

confidence: 59%

A Review of Biochar and Soil Nitrogen Dynamics

Clough

Condron

Kammann³

et al. 2013

Agronomy

759

458

View full text Add to dashboard Cite

oxide (N 2 O) were short-term in nature and found emission reductions, but long-term studies are lacking, as is mechanistic understanding of reductions. Stable N isotopes have a role in elucidating biochar-N-soil dynamics. There remains a dearth of information regarding effects of biochar and soil biota on N cycling. Biochar has potential within agroecosystems to be an N input, and a mitigation agent for environmentally detrimental N losses. Future research needs to systematically understand biochar-N interactions over the long term.

show abstract

Section: Dissolved Organic Nitrogen Retention and Leachingmentioning

confidence: 59%

A Review of Biochar and Soil Nitrogen Dynamics

Clough

Condron

Kammann³

et al. 2013

Agronomy

759

458

View full text Add to dashboard Cite

show abstract

“…Few research studies have evaluated the effect of biochar addition on soil microbial biomass content and reported inconsistent findings. For instance, Kolb et al [45] found increased microbial biomass content and activity in a range of temperate soil types amended with one type of biochar whereas Dempster et al [46] reported decreased MBC but not MBN in a course textured soil treated with Eucalyptus biochar. In the current study and only in the fall 2009 sampling, the biochar applied alone did not alter MBC, but decreased MBN content compared to the control, as also did biochar plus N. However, when biochar was combined with N, the content of MBC was the lowest in comparison to other treatments.…”

Section: Discussionmentioning

confidence: 99%

Application of Two Bioenergy Byproducts with Contrasting Carbon Availability to a Prairie Soil: Three-Year Crop Response and Changes in Soil Biological and Chemical Properties

Alotaibi

Schoenau

2016

Agronomy

View full text Add to dashboard Cite

Abstract:The bioenergy industry produces a wide range of byproducts varying in their chemical composition depending on type of technology employed. In particular, pyrolysis and transesterification conversion processes generate C-rich byproducts of biochar (BC) and glycerol (GL), respectively, which can be added to soil. These two byproducts vary in their carbon availability, and comparing their effects when added to agricultural soil deserves attention. This study investigated the immediate and residual effects of a single application of BC and GL to a cultivated Brown Chernozem soil from the semi-arid region of southwestern Saskatchewan, Canada. In the first season following addition of amendments, BC and GL alone had no significant impact on all measured parameters. However, when combined with 50 kg urea N¨ha´1 (BC + UR), the yields obtained were similar to those with 100 kg urea N¨ha´1 alone. The GL with urea N (GL + UR) treatment had reduced crop yield and N uptake compared to urea alone in the year of application attributed to N immobilization, but had a positive residual effect in the second year due to remineralization. Both GL and GL + UR treatments enhanced dehydrogenase activity compared to other treatments whereas BC + UR tended to decrease microbial biomass C. The crop and soil response to application of biochar was less than observed in previous studies conducted elsewhere. Direct and residual effects of glycerol addition on the crop were more evident. An application rate greater than 2.8 t¨ha´1 and 3.5 t¨ha´1 for BC and GL, respectively, may be required to induce larger responses.

show abstract

“…Many studies on soil MB have been conducted in the past few decades (Dempster et al, 2012;Kaschuk et al, 2010;Xu et al, 2013), and the focus has recently changed from site/ecosystem level Wright and Coleman, 2000;Zak et al, 1994) to regional (Dequiedt et al, 2011;Drenovsky et al, 2010) and global scales (Serna-Chavez et al, 2013;Xu et al, 2013). These large-scale studies examined microbial biomass storage and the mechanisms determining its spatial patterns.…”

Section: Introductionmentioning

confidence: 99%

Spatial variability of soil microbial biomass and its relationships with edaphic, vegetational and climatic factors in the Three-River Headwaters region on Qinghai-Tibetan Plateau

Shen

et al. 2015

Applied Soil Ecology

View full text Add to dashboard Cite

a b s t r a c tThis study aims to investigate the level of soil microbial biomass (MB) and analyze the relationships between soil MB and edaphic, vegetational and climatic factors at high elevation sites (>3000 m). We collected soil samples from 0 to 10 cm soil depth in 259 plots at 55 sites across 6 biomes in Three-River Headwaters (TRH) region at 3280-5127 m elevation. Soil microbial biomass carbon and nitrogen (MBC and MBN) were measured with the chloroform fumigation-extraction method. Multivariate stepwise regression analyses were used to analyze the combined effects of edaphic, vegetational and climatic factors on soil MB. We found: (1) soil MBC and MBN had an average of 30.95 mmol C/kg dry soil and 5.84 mmol N/kg dry soil in TRH, respectively, and their values were found to be negatively correlated with elevation; (2) soil MB was found to be significantly different among different biomes, and this spatial variation could be explained by the levels of soil organic carbon and belowground plant biomass. Our results indicate that the MB at high elevation region might be very low, and the increasing trend of soil microbial biomass with elevation could reverse at higher elevations.

show abstract

Decreased soil microbial biomass and nitrogen mineralisation with Eucalyptus biochar addition to a coarse textured soil

Cited by 425 publications

References 58 publications

A Review of Biochar and Soil Nitrogen Dynamics

A Review of Biochar and Soil Nitrogen Dynamics

Application of Two Bioenergy Byproducts with Contrasting Carbon Availability to a Prairie Soil: Three-Year Crop Response and Changes in Soil Biological and Chemical Properties

Spatial variability of soil microbial biomass and its relationships with edaphic, vegetational and climatic factors in the Three-River Headwaters region on Qinghai-Tibetan Plateau

Contact Info

Product

Resources

About