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Title: Switchgrass Biomass Quality as Affected by Nitrogen Rate, Harvest Time, and Storage

Abstract

The purpose of this study was to assess the changes in switchgrass (Panicum virgatum L.) biomass quality as affected by N rate, harvest time, and storage. This research was conducted near Bristol, SD, in 2010 and 2011. Treatments included three N rates (0, 56, and 112 kg N ha –1) applied annually and each N rate replicated four times. After a killing frost, all of the plots were harvested and baled in large round bales in October 2010 and November 2011. An area of about 30 m 2 from each plot was left unharvested to represent storage of standing switchgrass over the winter and to determine dry matter yields. Switchgrass was analyzed for hemicellulose, cellulose, lignin, mineral elements, N, and C. In the first season, storage of the fall harvested switchgrass bales numerically increased the concentrations of hemicellulose, lignin, and N. In the second season, they increased significantly. Mineral elements significantly increased in both sampling seasons. Delaying harvest until spring decreased lignin, N, and mineral elements concentration, and increased cellulose and hemicellulose concentrations, but also reduced biomass yield. Results from this study suggest that delaying the switchgrass harvest until spring increased the overall feedstock quality for ethanol production, but yieldmore » reductions must be considered to determine the overall economic impact of a delayed harvest.« less

Authors:
 [1];  [2];  [1];  [1];  [3];  [4]
  1. South Dakota State Univ., Brookings, SD (United States). Dep. of Plant Science
  2. Pusan National Univ., Miryang (South Korea). Dep. of Life Science and Environmental Biochemistry
  3. USDA-ARS, North Central Ag Research Lab, Brookings, SD (United States)
  4. South Dakota State Univ., Brookings, SD (United States). North Central Regional Sun Grant Center
Publication Date:
Research Org.:
South Dakota State Univ., Brookings, SD (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Bioenergy Technologies Office (EE-3B)
OSTI Identifier:
1427975
Grant/Contract Number:  
FC36-05GO85041
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Agronomy Journal
Additional Journal Information:
Journal Volume: 109; Journal Issue: 1; Journal ID: ISSN 0002-1962
Publisher:
Alliance of Crop, Soil, and Environmental Science Societies
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES

Citation Formats

Ibrahim, Mostafa, Hong, Chang Oh., Singh, Shikha, Kumar, Sandeep, Osborne, Shannon, and Owens, Vance. Switchgrass Biomass Quality as Affected by Nitrogen Rate, Harvest Time, and Storage. United States: N. p., 2017. Web. doi:10.2134/agronj2016.07.0380.
Ibrahim, Mostafa, Hong, Chang Oh., Singh, Shikha, Kumar, Sandeep, Osborne, Shannon, & Owens, Vance. Switchgrass Biomass Quality as Affected by Nitrogen Rate, Harvest Time, and Storage. United States. doi:10.2134/agronj2016.07.0380.
Ibrahim, Mostafa, Hong, Chang Oh., Singh, Shikha, Kumar, Sandeep, Osborne, Shannon, and Owens, Vance. Wed . "Switchgrass Biomass Quality as Affected by Nitrogen Rate, Harvest Time, and Storage". United States. doi:10.2134/agronj2016.07.0380. https://www.osti.gov/servlets/purl/1427975.
@article{osti_1427975,
title = {Switchgrass Biomass Quality as Affected by Nitrogen Rate, Harvest Time, and Storage},
author = {Ibrahim, Mostafa and Hong, Chang Oh. and Singh, Shikha and Kumar, Sandeep and Osborne, Shannon and Owens, Vance},
abstractNote = {The purpose of this study was to assess the changes in switchgrass (Panicum virgatum L.) biomass quality as affected by N rate, harvest time, and storage. This research was conducted near Bristol, SD, in 2010 and 2011. Treatments included three N rates (0, 56, and 112 kg N ha–1) applied annually and each N rate replicated four times. After a killing frost, all of the plots were harvested and baled in large round bales in October 2010 and November 2011. An area of about 30 m2 from each plot was left unharvested to represent storage of standing switchgrass over the winter and to determine dry matter yields. Switchgrass was analyzed for hemicellulose, cellulose, lignin, mineral elements, N, and C. In the first season, storage of the fall harvested switchgrass bales numerically increased the concentrations of hemicellulose, lignin, and N. In the second season, they increased significantly. Mineral elements significantly increased in both sampling seasons. Delaying harvest until spring decreased lignin, N, and mineral elements concentration, and increased cellulose and hemicellulose concentrations, but also reduced biomass yield. Results from this study suggest that delaying the switchgrass harvest until spring increased the overall feedstock quality for ethanol production, but yield reductions must be considered to determine the overall economic impact of a delayed harvest.},
doi = {10.2134/agronj2016.07.0380},
journal = {Agronomy Journal},
number = 1,
volume = 109,
place = {United States},
year = {Wed Jan 25 00:00:00 EST 2017},
month = {Wed Jan 25 00:00:00 EST 2017}
}

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Cited by: 4 works
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