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

    Research output: Contribution to journalArticle

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    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.

    Original languageEnglish (US)
    Pages (from-to)753-764
    Number of pages12
    JournalBioenergy Research
    Volume7
    Issue number2
    DOIs
    StatePublished - 2014

    Profile

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

    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

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

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

    Research output: Contribution to journalArticle

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