Impacts of Nitrogen Rate and Landscape Position on Soils and Switchgrass Root Growth Parameters
Abstract
Switchgrass (Panicum virgatum L.) has been recognized as a potential bioenergy feedstock, and can positively impact soils and the environment. The experimental sites were established in 2008 at three locations with each in Oklahoma (OK), South Dakota (SD), and Virginia (VA) to assess the impacts of N fertilization rate (N rate; low, 0 kg ha-1; high, 112 kg ha-1) and landscape position (shoulder, backslope, and footslope) on select soil properties and root growth parameters. Data indicate that N rate did not affect soil bulk density (BD), pH, electrical conductivity (EC), soil organic carbon (SOC), and total nitrogen (TN) for any of five depths. Landscape position impacted some of these properties by depth, depending on location. The N rate influenced root weight (RW), root surface area (RSA), and root total nitrogen (RTN) for the total profile (0–100-cm depth) depending on local site conditions. The landscape position impacted RW, root total carbon (RTC), and RTN for total profile according to different site conditions. The interactions of landscape position by N rate on switchgrass root parameters were significant. The findings in this study indicate that the root system of switchgrass could improve soils and increase C accumulation and reduce the risk of Nmore »
- Authors:
-
- South Dakota State Univ., Brookings, SD (United States)
- South Dakota State Univ., Brookings, SD (United States); Himachal Pradesh Agriculture Univ. (India)
- Univ. of Puerto Rico, Mayaguez, PR (United States)
- Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
- Pusan National Univ., Miryang (Korea, Republic of)
- Oklahoma State Univ., Haskell, OK (United States)
- Publication Date:
- Research Org.:
- South Dakota State Univ., Brookings, SD (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- OSTI Identifier:
- 1613533
- Grant/Contract Number:
- FC36-05GO85041
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Agronomy Journal
- Additional Journal Information:
- Journal Volume: 111; Journal Issue: 3; Journal ID: ISSN 0002-1962
- Publisher:
- Alliance of Crop, Soil, and Environmental Science Societies
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 09 BIOMASS FUELS; 54 ENVIRONMENTAL SCIENCES; Agriculture
Citation Formats
Kumar, Sandeep, Lai, Liming, Kumar, Pardeep, Valentín Feliciano, Yashira Marie, Battaglia, Martín Leonardo, Hong, Chang Oh, Owens, Vance N., Fike, John, Farris, Rodney, and Galbraith, John. Impacts of Nitrogen Rate and Landscape Position on Soils and Switchgrass Root Growth Parameters. United States: N. p., 2019.
Web. doi:10.2134/agronj2018.08.0483.
Kumar, Sandeep, Lai, Liming, Kumar, Pardeep, Valentín Feliciano, Yashira Marie, Battaglia, Martín Leonardo, Hong, Chang Oh, Owens, Vance N., Fike, John, Farris, Rodney, & Galbraith, John. Impacts of Nitrogen Rate and Landscape Position on Soils and Switchgrass Root Growth Parameters. United States. https://doi.org/10.2134/agronj2018.08.0483
Kumar, Sandeep, Lai, Liming, Kumar, Pardeep, Valentín Feliciano, Yashira Marie, Battaglia, Martín Leonardo, Hong, Chang Oh, Owens, Vance N., Fike, John, Farris, Rodney, and Galbraith, John. Fri .
"Impacts of Nitrogen Rate and Landscape Position on Soils and Switchgrass Root Growth Parameters". United States. https://doi.org/10.2134/agronj2018.08.0483. https://www.osti.gov/servlets/purl/1613533.
@article{osti_1613533,
title = {Impacts of Nitrogen Rate and Landscape Position on Soils and Switchgrass Root Growth Parameters},
author = {Kumar, Sandeep and Lai, Liming and Kumar, Pardeep and Valentín Feliciano, Yashira Marie and Battaglia, Martín Leonardo and Hong, Chang Oh and Owens, Vance N. and Fike, John and Farris, Rodney and Galbraith, John},
abstractNote = {Switchgrass (Panicum virgatum L.) has been recognized as a potential bioenergy feedstock, and can positively impact soils and the environment. The experimental sites were established in 2008 at three locations with each in Oklahoma (OK), South Dakota (SD), and Virginia (VA) to assess the impacts of N fertilization rate (N rate; low, 0 kg ha-1; high, 112 kg ha-1) and landscape position (shoulder, backslope, and footslope) on select soil properties and root growth parameters. Data indicate that N rate did not affect soil bulk density (BD), pH, electrical conductivity (EC), soil organic carbon (SOC), and total nitrogen (TN) for any of five depths. Landscape position impacted some of these properties by depth, depending on location. The N rate influenced root weight (RW), root surface area (RSA), and root total nitrogen (RTN) for the total profile (0–100-cm depth) depending on local site conditions. The landscape position impacted RW, root total carbon (RTC), and RTN for total profile according to different site conditions. The interactions of landscape position by N rate on switchgrass root parameters were significant. The findings in this study indicate that the root system of switchgrass could improve soils and increase C accumulation and reduce the risk of N loss to benefit the environment.},
doi = {10.2134/agronj2018.08.0483},
journal = {Agronomy Journal},
number = 3,
volume = 111,
place = {United States},
year = {Fri Mar 01 00:00:00 EST 2019},
month = {Fri Mar 01 00:00:00 EST 2019}
}
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