[en] he application of biochar to soils is a promising technique for increasing soil organic C and offsetting GHG emissions. However, large-scale adoption by farmers will likely require the proof of its utility to improve plant growth and soil quality. In this context, we conducted a four-year field experiment between October 2010 to October 2014 on a fertile silty clay loam Albeluvisol in Norway to assess the impact of biochar on soil physical properties, soil microbial biomass, and oat and barley yield. The following treatments were included: Control (soil), miscanthus biochar 8 t C ha−1 (BC8), miscanthus straw feedstock 8 t C ha−1 (MC8), and miscanthus biochar 25 t C ha−1 (BC25). Average volumetric water content at field capacity was significantly higher in BC25 when compared to the control due to changes in BD and total porosity. The biochar amendment had no effect on soil aggregate (2–6 mm) stability, pore size distribution, penetration resistance, soil microbial biomass C and N, and basal respiration. Biochar did not alter crop yields of oat and barley during the four growing seasons. In order to realize biochar’s climate mitigation potential, we suggest future research and development efforts should focus on improving the agronomic utility of biochar in engineered fertilizer and soil amendment products.
Carnol, Monique ; Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Ecologie végétale et microbienne
Bosman, Bernard ; Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Ecologie végétale et microbienne
Rasse, Daniel P.
Language :
English
Title :
Miscanthus Biochar had Limited Effects on Soil Physical Properties, Microbial Biomass, and Grain Yield in a Four-Year Field Experiment in Norway
Publication date :
2018
Journal title :
Agriculture
eISSN :
2077-0472
Publisher :
MDPI AG, Switzerland
Volume :
8
Issue :
11
Pages :
171-190
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
“Creating a scientific basis for an integrated evaluation of soil-borne GHG emissions in Norwegian agriculture” NFR/192856 and “Capture+: Sustainable biochar systems for a zero emission society”
Funders :
Research Council of Norway (NFR) Norwegian Ministry of Climate and Environment
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