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- Department of Agronomy and Horticulture: Faculty Publications (1)
- School of Biological Sciences: Faculty Publications (1)
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- United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications (1)
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Full-Text Articles in Life Sciences
Abiotic Stress Responses In Photosynthetic Organisms, Joseph Msanne
Abiotic Stress Responses In Photosynthetic Organisms, Joseph Msanne
School of Natural Resources: Dissertations, Theses, and Student Research
Cellular and molecular aspects of abiotic stress responses in Arabidopsis thaliana subjected to cold, drought, and high salinity and in two photosynthetic green alga, Chlamydomonas reinhardtii and Coccomyxa sp. C-169, subjected to nitrogen deprivation were investigated. Cold, drought, and high salinity can negatively affect plant growth and crop production. The first research aimed at determining the physiological functions of the stress-responsive Arabidopsis thaliana RD29A and RD29B genes. Cold, drought, and salt induced both genes; the promoter of RD29Awas found to be more responsive to drought and cold stresses, whereas the promoter of RD29B was highly responsive to salt stress. …
Maize Cellulosic Biofuels: Soil Carbon Loss Can Be A Hidden Cost Of Residue Removal, Amy Kochsiek, Johannes Knops
Maize Cellulosic Biofuels: Soil Carbon Loss Can Be A Hidden Cost Of Residue Removal, Amy Kochsiek, Johannes Knops
School of Biological Sciences: Faculty Publications
Second generation biofuels, like cellulosic ethanol, have potential as important energy sources that can lower fossil fuel carbon emissions without affecting global food commodity prices. Agricultural crop residues, especially maize, have been proposed for use as biofuel, but the net greenhouse warming effect of the gained fossil fuel carbon offset needs to account for any ecosystem carbon losses caused by the large-scale maize residue removal. Using differential 13C isotopic ratios between residue and soil in an incubation experiment, we found that removal of residue increased soil organic matter decomposition by an average of 16%, or 540–800 kg carbon ha -1. …
Carbon Exchange By Establishing Biofuel Crops In Central Illinois, Marcelo Zeri, Kristina Anderson-Teixeira, George Hickman, Michael Masters, Evan Delucia, Carl J. Bernacchi
Carbon Exchange By Establishing Biofuel Crops In Central Illinois, Marcelo Zeri, Kristina Anderson-Teixeira, George Hickman, Michael Masters, Evan Delucia, Carl J. Bernacchi
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
Perennial grass bio-fuels may contribute to long-term carbon sequestration in soils, thereby providing a broad range of environmental benefits. To quantify those benefits, the carbon balance was investigated over three perennial grass bio-fuel crops – miscanthus (Miscanthus×giganteus), switch-grass (Panicum virgatum) and a mixture of native prairie plants – and a row crop control (maize–maize–soy) in Central Illinois, USA, during the establishment phase of the perennial grasses (2008–2011). The eddy covariance technique was used to calculate fluxes of carbon dioxide and energy balance components, such as latent and sensible heat fluxes. Whereas maize attained the highest maximal …
Switchgrass For Forage And Bioenergy: Harvest And Nitrogen Rate Effects On Biomass Yields And Nutrient Composition, John A. Guretzky, Jon T. Biermacher, Billy Cook, Maru K. Kering, Jagadeesh Mosali
Switchgrass For Forage And Bioenergy: Harvest And Nitrogen Rate Effects On Biomass Yields And Nutrient Composition, John A. Guretzky, Jon T. Biermacher, Billy Cook, Maru K. Kering, Jagadeesh Mosali
Department of Agronomy and Horticulture: Faculty Publications
Switchgrass (Panicum virgatum L.) may have value as forage and a bioenergy feedstock. Our objective was to evaluate how harvest system and N fertilizer rates affected biomass yield and nutrient composition of young stands of switchgrass (cv. Alamo) in the southern Great Plains, USA. Nitrogen fertilization increased biomass yields from 10.4, 10.8, and 12.2 Mg ha−1 at 0 kg N ha−1 to 13.7, 14.6, and 21.0 Mg ha−1 at 225 kg N ha−1 when harvested after seed set (October), after frost (December), and twice per year after boot stage (July) and frost, respectively. Nutrient concentrations …