Energy Requirements and Greenhouse Gas Emissions of Maize Production in the USA

Research output: Contribution to journalArticle

  • 9 Citations

Abstract

This meta-study quantitatively and qualitatively compares 21 published life cycle assessment (LCA)-type studies for energy consumption and greenhouse gas (GHG) emissions of maize production in the USA. Differences between the methodologies and numerical results obtained are described. Nonrenewable energy consumption in maize production (from cradle-to-farm gate) ranges from 1.44 to 3.50 MJ/kg of maize, and GHG emissions associated with maize production range from -27 to 436 g CO2 equivalent/kg of maize. Large variations between studies exist within the input data for lime application, fuels purchased, and life cycle inventory data for fertilizer and agrochemical production. Although most studies use similar methodological approaches, major differences between studies include the following: (1) impacts associated with human labor and farm machinery production, (2) changes in carbon dioxide emissions resulting from soil organic carbon levels, and (3) indirect N2O emissions.

LanguageEnglish (US)
Pages753-764
Number of pages12
JournalBioenergy Research
Volume7
Issue number2
DOIs
StatePublished - 2014

Profile

greenhouse gas emissions
Gas emissions
Greenhouse gases
energy requirements
corn
energy use and consumption
Farms
Life cycle
Energy utilization
life cycle inventory
life cycle assessment
agricultural machinery and equipment
agrochemicals
Fertilizers
Organic carbon
Lime
soil organic carbon
Machinery
Carbon dioxide
labor

Keywords

  • Greenhouse gas emissions
  • Life cycle assessment
  • Maize
  • Nonrenewable energy

ASJC Scopus subject areas

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

Cite this

Energy Requirements and Greenhouse Gas Emissions of Maize Production in the USA. / Kim, Seungdo; Dale, Bruce E.; Keck, Pam.

In: Bioenergy Research, Vol. 7, No. 2, 2014, p. 753-764.

Research output: Contribution to journalArticle

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