Optimal fertilizer nitrogen rates and yield-scaled global warming potential in drill seeded rice

Maria Arlene Adviento-Borbe, Cameron M. Pittelkow, Merle Anders, Chris van Kessel, James E. Hill, Anna M. McClung, Johan Six, Bruce A. Linquist

Research output: Contribution to journalArticle

Abstract

Drill seeded rice (Oryza sativa L.) is the dominant rice cultivation practice in the United States. Although drill seeded systems can lead to significant CH4 and N2O emissions due to anaerobic and aerobic soil conditions, the relationship between high-yielding management practices, particularly fertilizer N management, and total global warming potential (GWP) remains unclear. We conducted three field experiments in California and Arkansas to test the hypothesis that by optimizing grain yield through N management, the lowest yield-scaled global warming potential (GWPY = GWP Mg-1 grain) is achieved. Each growing season, urea was applied at rates ranging from 0 to 224 kg N ha-1 before the permanent flood. Emissions of CH4 and N2O were measured daily to weekly during growing seasons and fallow periods. Annual CH4 emissions ranged from 9.3 to 193 kg CH4-C ha-1 yr-1 across sites, and annual N2O emissions averaged 1.3 kg N2O-N ha-1 yr-1. Relative to N2O emissions, CH4 dominated growing season (82%) and annual (68%) GWP. The impacts of fertilizer N rates on GHG fluxes were confined to the growing season, with increasing N rate having little effect on CH4 emissions but contributing to greater N2O emissions during nonflooded periods. The fallow period contributed between 7 and 39% of annual GWP across sites years. This finding illustrates the need to include fallow period measurements in annual emissions estimates. Growing season GWPY ranged from 130 to 686 kg CO2 eq Mg-1 season-1 across sites and years. Fertilizer N rate had no significant effect on GWPY; therefore, achieving the highest productivity is not at the cost of higher GWPY.

Original languageEnglish (US)
Pages (from-to)1623-1634
Number of pages12
JournalJournal of Environmental Quality
Volume42
Issue number6
DOIs
StatePublished - Nov 1 2013

Fingerprint

Nitrogen fertilizers
Global warming
global warming
rice
fertilizer
Fertilizers
nitrogen
growing season
fallow
Urea
Productivity
rate
Fluxes
Soils
urea
management practice
productivity
Experiments

ASJC Scopus subject areas

  • Environmental Engineering
  • Water Science and Technology
  • Waste Management and Disposal
  • Pollution
  • Management, Monitoring, Policy and Law

Cite this

Adviento-Borbe, M. A., Pittelkow, C. M., Anders, M., van Kessel, C., Hill, J. E., McClung, A. M., ... Linquist, B. A. (2013). Optimal fertilizer nitrogen rates and yield-scaled global warming potential in drill seeded rice. Journal of Environmental Quality, 42(6), 1623-1634. https://doi.org/10.2134/jeq2013.05.0167

Optimal fertilizer nitrogen rates and yield-scaled global warming potential in drill seeded rice. / Adviento-Borbe, Maria Arlene; Pittelkow, Cameron M.; Anders, Merle; van Kessel, Chris; Hill, James E.; McClung, Anna M.; Six, Johan; Linquist, Bruce A.

In: Journal of Environmental Quality, Vol. 42, No. 6, 01.11.2013, p. 1623-1634.

Research output: Contribution to journalArticle

Adviento-Borbe, MA, Pittelkow, CM, Anders, M, van Kessel, C, Hill, JE, McClung, AM, Six, J & Linquist, BA 2013, 'Optimal fertilizer nitrogen rates and yield-scaled global warming potential in drill seeded rice', Journal of Environmental Quality, vol. 42, no. 6, pp. 1623-1634. https://doi.org/10.2134/jeq2013.05.0167
Adviento-Borbe MA, Pittelkow CM, Anders M, van Kessel C, Hill JE, McClung AM et al. Optimal fertilizer nitrogen rates and yield-scaled global warming potential in drill seeded rice. Journal of Environmental Quality. 2013 Nov 1;42(6):1623-1634. https://doi.org/10.2134/jeq2013.05.0167
Adviento-Borbe, Maria Arlene ; Pittelkow, Cameron M. ; Anders, Merle ; van Kessel, Chris ; Hill, James E. ; McClung, Anna M. ; Six, Johan ; Linquist, Bruce A. / Optimal fertilizer nitrogen rates and yield-scaled global warming potential in drill seeded rice. In: Journal of Environmental Quality. 2013 ; Vol. 42, No. 6. pp. 1623-1634.
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