Corn and soil response to biochar application and stover harvest

•Effect of biochar and residue removal on soil quality and yields of continues corn.•Residue removal increased corn yields on high quality soils in the upper US Midwest.•Biochar applications increase corn yields only for zero residue removal plots.•Biochar applications increased soil organic C and s...

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Bibliographic Details
Published in:Field crops research 2016-02, Vol.187, p.96-106
Main Authors: Rogovska, Natalia, Laird, David A., Karlen, Douglas L.
Format: Article
Language:English
Subjects:
aggregate stability
Biochar
Bioenergy
biomass
bulk density
carbon
cation exchange capacity
climatic factors
Continuous corn
corn
drought
fertilizer rates
grain yield
hardwood
harvesting
Iowa
nitrogen content
nutrients
Residue
soil pH
Soil quality
stover
summer
Zea mays
zinc
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Summary:•Effect of biochar and residue removal on soil quality and yields of continues corn.•Residue removal increased corn yields on high quality soils in the upper US Midwest.•Biochar applications increase corn yields only for zero residue removal plots.•Biochar applications increased soil organic C and soil pH. Soil biochar amendments are hypothesized to help mitigate potential negative soil quality effects of harvesting crop residues for bioenergy production. This study quantified effects of a onetime biochar application on crop yields and changes in soil properties at a Midwestern U.S.A. site where corn (Zea mays) stover is being harvested. The long-term experiment was established in Boone County, Iowa by application of 0, 9.8, and 18.4Mgha−1 of
ISSN:0378-4290
1872-6852
DOI:10.1016/j.fcr.2015.12.013