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Full-Text Articles in Life Sciences

Comparison Of Cellulosic Ethanol Yields From Midwestern Maize And Reconstructed Tallgrass Prairie Systems Managed For Bioenergy, V. A. Nichols, F. E. Miguez, M. E. Jarchow, M. Z. Liebman, B. S. Dien Dec 2014

Comparison Of Cellulosic Ethanol Yields From Midwestern Maize And Reconstructed Tallgrass Prairie Systems Managed For Bioenergy, V. A. Nichols, F. E. Miguez, M. E. Jarchow, M. Z. Liebman, B. S. Dien

Agronomy Publications

Maize- and prairie-based systems were investigated as cellulosic feedstocks by conducting a 9 ha side-by-side comparison on fertile soils in the Midwestern United States. Maize was grown continuously with adequate fertilization over years both with and without a winter rye cover crop, and the 31-species reconstructed prairie was grown with and without spring nitrogen fertilization. Both maize stover and prairie biomass were harvested in the fall. We compared amounts of cellulosic biomass produced and harvested, carbohydrate contents as measured by both dietary and detergent methods, and estimated cellulosic ethanol yields per hectare. From 2009–2013, the cropping system with the ...


Midwest Vision For Sustainable Fuel Production, Kenneth J. Moore, Stuart J. Birrell, Robert C. Brown, Michael D. Caster, Jill E. Euken, H. Mark Hanna, Dermot J. Hayes, Jason D. Hill, Keri L. Jacobs, Catherine L. Kling, David A. Laird, Robert B. Mitchell, Patrick T. Murphy, D. Raj Raman, Charles V. Schwab, Kevin J. Shinners, Kenneth P. Vogel, Jeffrey J. Volenic Jan 2014

Midwest Vision For Sustainable Fuel Production, Kenneth J. Moore, Stuart J. Birrell, Robert C. Brown, Michael D. Caster, Jill E. Euken, H. Mark Hanna, Dermot J. Hayes, Jason D. Hill, Keri L. Jacobs, Catherine L. Kling, David A. Laird, Robert B. Mitchell, Patrick T. Murphy, D. Raj Raman, Charles V. Schwab, Kevin J. Shinners, Kenneth P. Vogel, Jeffrey J. Volenic

Agronomy Publications

This article charts the progress of CenUSA Bioenergy, a USDA-NIFA-AFRI coordinated agricultural project focused on the North Central region of the US. CenUSA’s vision is to develop a regional system for producing fuels and other products from perennial grass crops grown on marginally productive land or land that is otherwise unsuitable for annual cropping. This article focuses on contributions CenUSA has made to nine primary systems needed to make this vision a reality: feedstock improvement; feedstock production on marginal land; feedstock logistics; modeling system performance; feedstock conversion into biofuels and other products; marketing; health and safety; education, and outreach ...


Future Prospects For Corn As A Biofuel Crop, Kenneth J. Moore, Douglas L. Karlen, Kendall R. Lamkey Jan 2014

Future Prospects For Corn As A Biofuel Crop, Kenneth J. Moore, Douglas L. Karlen, Kendall R. Lamkey

Agronomy Publications

Ethanol production from corn grain has increased signifi cantly during the past ten years in the US. This increase was driven by government policy guided by the Renewable Fuel Standard (RFS) and embodied in the Volumetric Ethanol Excise Tax Credit and other legislation created to promote a biofuels industry. As corn grain ethanol production approaches the target set out in the RFS, the industry is looking to develop capacity for producing advanced biofuels, primarily from agricultural wastes and dedicated energy crops. The residues remaining following corn harvest have been identifi ed as a voluminous and readily available feedstock for advanced ...


Spatial And Temporal Dynamics Of Soil-Surface Carbon Dioxide Emissions In Bioenergy Corn Rotations And Reconstructed Prairies, Aaron L. Daigh, Thomas J. Sauer, Xinhua Xiao, Robert Horton Jan 2014

Spatial And Temporal Dynamics Of Soil-Surface Carbon Dioxide Emissions In Bioenergy Corn Rotations And Reconstructed Prairies, Aaron L. Daigh, Thomas J. Sauer, Xinhua Xiao, Robert Horton

Agronomy Publications

The interest in bioenergy crops has raised questions as to the potential of management strategies to preserve soil C pools and soil quality. Since soil-surface CO2 effluxes are a major fate of soil C, knowledge of CO2 efflux’s spatial and temporal trends among bioenergy crops will facilitate advances in research on improving terrestrial C-cycle models as well as decision support tools for policy and land-management. Our objective was to evaluate spatial and temporal dynamics of soil-surface CO2 effluxes in bioenergy-based corn (Zea mays L.) and reconstructed prairie systems. Systems evaluated included continuous corn (harvested for grain ...