Impact of biochar amendments on the quality of a typical Midwestern agricultural soil Laird, David Fleming, Pierce Davis, Dedrick Horton, Robert Karlen, Douglas Wang, Baiqun
dc.contributor.department Agronomy 2018-01-25T07:47:21.000 2020-06-29T23:04:47Z 2020-06-29T23:04:47Z 2010-09-15
dc.description.abstract <p>Biochar, a co-product of thermochemical conversion of lignocellulosic materials into advanced biofuels, may be used as a soil amendment to enhance the sustainability of biomass harvesting. We investigated the impact of biochar amendments (0, 5, 10, and 20 g-biochar kg− 1 soil) on the quality of a Clarion soil (Mesic Typic Hapludolls), collected (0–15 cm) in Boone County, Iowa. Repacked soil columns were incubated for 500 days at 25 °C and 80% relative humidity. On week 12, 5 g of dried and ground swine manure was incorporated into the upper 3 cm of soil for half of the columns. Once each week, all columns were leached with 200 mL of 0.001 M CaCl2. Soil bulk density increased with time for all columns and was significantly lower for biochar amended soils relative to the un-amended soils. The biochar amended soils retained more water at gravity drained equilibrium (up to 15%), had greater water retention at − 1 and −5 bars soil water matric potential, (13 and 10% greater, respectively), larger specific surface areas (up to 18%), higher cation exchange capacities (up to 20%), and pH values (up to 1 pH unit) relative to the un-amended controls. No effect of biochar on saturated hydraulic conductivity was detected. The biochar amendments significantly increased total N (up to 7%), organic C (up to 69%), and Mehlich III extractable P, K, Mg and Ca but had no effect on Mehlich III extractable S, Cu, and Zn. The results indicate that biochar amendments have the potential to substantially improve the quality and fertility status of Midwestern agricultural soils.</p>
dc.description.comments <p>This article is published as Laird, David A., Pierce Fleming, Dedrick D. Davis, Robert Horton, Baiqun Wang, and Douglas L. Karlen. "Impact of biochar amendments on the quality of a typical Midwestern agricultural soil." Geoderma 158, no. 3 (2010): 443-449. doi: <a href="" target="_blank">10.1016/j.geoderma.2010.05.013</a>. Posted with permission.</p>
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dc.identifier archive/
dc.identifier.articleid 1433
dc.identifier.contextkey 11408574
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath agron_pubs/386
dc.language.iso en
dc.source.bitstream archive/|||Fri Jan 14 23:53:44 UTC 2022
dc.source.uri 10.1016/j.geoderma.2010.05.013
dc.subject.disciplines Agriculture
dc.subject.disciplines Geochemistry
dc.subject.disciplines Soil Science
dc.subject.keywords biochar
dc.subject.keywords Charcoal
dc.subject.keywords Black carbon
dc.subject.keywords Soil quality
dc.subject.keywords Manure
dc.title Impact of biochar amendments on the quality of a typical Midwestern agricultural soil
dc.type article
dc.type.genre article
dspace.entity.type Publication
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