Drought conditions in 2012 were some of the most severe in recent history. The purpose of this study is to examine the impact of drought on quality, quantity, and theoretical ethanol yield (TEY) of three bioenergy feedstocks, corn stover, mixed grasses from Conservation Reserve Program lands, and Miscanthus × giganteus. To assess drought effects on these feedstocks, samples from 2010 (minimal to no drought) and 2012 (severe drought) were compared from multiple locations in the US. In all feedstocks, drought significantly increased extractives and reduced structural sugars and lignin; subsequently, TEYs were reduced 10–15%. Biomass yields were significantly reduced for M. × giganteus and mixed grasses. When reduction in quality and quantity were combined, TEYs decreased 26–59%. Drought negatively affected biomass quality and quantity that resulted in significant TEY reductions. As a result, such fluctuations in biomass quality and yield may have significant consequences for developing lignocellulosic biorefineries.
Emerson, Rachel, et al. "Drought effects on composition and yield for corn stover, mixed grasses, and <i>Miscanthus</i> as bioenergy feedstocks." Biofuels, vol. 5, no. 3, Jul. 2014. https://doi.org/10.1080/17597269.2014.913904
Emerson, Rachel, Hoover, Amber, Ray, Allison, et al., "Drought effects on composition and yield for corn stover, mixed grasses, and <i>Miscanthus</i> as bioenergy feedstocks," Biofuels 5, no. 3 (2014), https://doi.org/10.1080/17597269.2014.913904
@article{osti_1242478,
author = {Emerson, Rachel and Hoover, Amber and Ray, Allison and Lacey, Jeffrey and Cortez, Marnie and Payne, Courtney and Karlen, Douglas and Birrell, Stuart and Laird, David and Kallenbach, Robert and others},
title = {Drought effects on composition and yield for corn stover, mixed grasses, and <i>Miscanthus</i> as bioenergy feedstocks},
annote = {Drought conditions in 2012 were some of the most severe in recent history. The purpose of this study is to examine the impact of drought on quality, quantity, and theoretical ethanol yield (TEY) of three bioenergy feedstocks, corn stover, mixed grasses from Conservation Reserve Program lands, and Miscanthus × giganteus. To assess drought effects on these feedstocks, samples from 2010 (minimal to no drought) and 2012 (severe drought) were compared from multiple locations in the US. In all feedstocks, drought significantly increased extractives and reduced structural sugars and lignin; subsequently, TEYs were reduced 10–15%. Biomass yields were significantly reduced for M. × giganteus and mixed grasses. When reduction in quality and quantity were combined, TEYs decreased 26–59%. Drought negatively affected biomass quality and quantity that resulted in significant TEY reductions. As a result, such fluctuations in biomass quality and yield may have significant consequences for developing lignocellulosic biorefineries.},
doi = {10.1080/17597269.2014.913904},
url = {https://www.osti.gov/biblio/1242478},
journal = {Biofuels},
issn = {ISSN 1759-7269},
number = {3},
volume = {5},
place = {United States},
year = {2014},
month = {07}}