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Greenhouse Gas Emissions, Nitrate Leaching, and Biomass Yields from Production of Miscanthus × giganteus in Illinois, USA
| Content Provider | Semantic Scholar |
|---|---|
| Author | Behnke, Gevan D. David, Mark B. Voigt, Thomas B. |
| Copyright Year | 2012 |
| Abstract | Understanding the effects of nitrogen (N) fertilization on Miscanthus × giganteus greenhouse gas emissions, nitrate leaching, and biomass production is an important consideration when using this grass as a biomass feedstock. The objective of this study was to determine the effect of three N fertilization rates (0, 60, and 120 kg N ha−1 using urea as the N source) on nitrous oxide (N2O) and carbon dioxide (CO2) emissions, nitrogen leaching, and the biomass yields and N content of M. × giganteus planted in July 2008, and evaluated from 2009 through early 2011 in Urbana, Illinois, USA. While there was no biomass yield response to N fertilization rates in 2009 and 2010, the amount of N in the harvested biomass in 2010 was significantly greater at the 60 and 120 kg N ha−1 N rates. There was no significant CO2 emission response to N rates in 2009 or 2010. Similarly, N fertilization did not increase cumulative N2O emissions in 2009, but cumulative N2O emissions did increase in 2010 with N fertilization. During 2009, nitrate (NO3−) leaching at the 50-cm soil depth was not related to fertilization rate, but there was a significant increase in NO3− leaching between the 0 and 120 kg N ha−1 treatments in 2010 (8.9 and 28.9 kg NO3–N ha−1 year−1, respectively). Overall, N fertilization of M. × giganteus led to N2O releases, increased fluxes of inorganic N (primarily NO3−) through the soil profile; and increased harvested N without a significant increase in biomass production. |
| Starting Page | 801 |
| Ending Page | 813 |
| Page Count | 13 |
| File Format | PDF HTM / HTML |
| DOI | 10.1007/s12155-012-9191-5 |
| Alternate Webpage(s) | http://biogeochemistry.nres.illinois.edu/Biogeochem_lab/pdfs/Behnke%20et%20al%20BioEnergy%20Res%202012.pdf |
| Alternate Webpage(s) | https://doi.org/10.1007/s12155-012-9191-5 |
| Volume Number | 5 |
| Journal | BioEnergy Research |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
