Nitrogen Demand Associated with Increased Biomass Yield of Switchgrass and Big Bluestem: Implications for Future Breeding Strategies

Michael D. Casler, Do Kyoung Lee, Robert B. Mitchell, Paul R. Adler, R. Mark Sulc, Keith D. Johnson, Robert L. Kallenbach, Arvid R. Boe, Russell D. Mathison, Kim A. Cassida, Doohong Min, Kenneth J. Moore

Research output: Contribution to journalArticle

Abstract

Development of perennial biomass cropping systems is focused on maximizing biomass yield with minimum inputs, particularly nitrogen (N) fertilizer. Historical breeding efforts have focused on increasing biomass yield but have ignored N-use efficiency. The purpose of this study was to quantify the increased N demand associated with realized gains in biomass yield from big bluestem (Andropogon gerardii Vitman) and switchgrass (Panicum virgatum L.) breeding programs. Nitrogen demand was highly variable across locations and years, ranging from − 1.7 to + 6.8 kg N Mg−1 DM, with an average of 2.2 kg N Mg−1 DM. Increases in N demand were closely associated with realized gains in biomass yield and were observed for all types of switchgrass (upland, lowland, and hybrid) as well as for big bluestem. Attenuation of these responses will require alternative breeding schemes that are focused on evaluation of switchgrass genotypes and progeny under low-N conditions and include a high-throughput tissue N analysis as a component of future selection criteria, designed to develop new cultivars with high biomass yield and low tissue N.

Original languageEnglish (US)
JournalBioenergy Research
DOIs
StateAccepted/In press - Jan 1 2019

Fingerprint

Andropogon gerardii
Panicum virgatum
Biomass
Nitrogen
biomass
breeding
nitrogen
nitrogen fertilizers
Tissue
Fertilizers
selection criteria
cropping systems
lowlands
highlands
Throughput
genotype
cultivars

Keywords

  • Andropogon gerardii Vitman
  • Breeding
  • Genetics
  • Nitrogen-use efficiency
  • Panicum virgatum L

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Agronomy and Crop Science
  • Energy (miscellaneous)

Cite this

Nitrogen Demand Associated with Increased Biomass Yield of Switchgrass and Big Bluestem : Implications for Future Breeding Strategies. / Casler, Michael D.; Lee, Do Kyoung; Mitchell, Robert B.; Adler, Paul R.; Sulc, R. Mark; Johnson, Keith D.; Kallenbach, Robert L.; Boe, Arvid R.; Mathison, Russell D.; Cassida, Kim A.; Min, Doohong; Moore, Kenneth J.

In: Bioenergy Research, 01.01.2019.

Research output: Contribution to journalArticle

Casler, MD, Lee, DK, Mitchell, RB, Adler, PR, Sulc, RM, Johnson, KD, Kallenbach, RL, Boe, AR, Mathison, RD, Cassida, KA, Min, D & Moore, KJ 2019, 'Nitrogen Demand Associated with Increased Biomass Yield of Switchgrass and Big Bluestem: Implications for Future Breeding Strategies', Bioenergy Research. https://doi.org/10.1007/s12155-019-10081-y
Casler, Michael D. ; Lee, Do Kyoung ; Mitchell, Robert B. ; Adler, Paul R. ; Sulc, R. Mark ; Johnson, Keith D. ; Kallenbach, Robert L. ; Boe, Arvid R. ; Mathison, Russell D. ; Cassida, Kim A. ; Min, Doohong ; Moore, Kenneth J. / Nitrogen Demand Associated with Increased Biomass Yield of Switchgrass and Big Bluestem : Implications for Future Breeding Strategies. In: Bioenergy Research. 2019.
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