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Irrigation energy use and related greenhouse gas emissions of maize production in Mexico
- Juárez-Hernández, Sergio, Sheinbaum Pardo, Claudia
- International journal of water resources development 2019 v.35 no.4 pp. 701-723
- corn, crop production, emissions, energy, forestry, irrigated farming, irrigation, irrigation water, meteorological data, water requirement, Mexico
- Maize is the most important crop grown in Mexico, with more than one-third of total production coming from irrigated fields. We compute irrigation energy use and associated greenhouse gas emissions of different irrigated maize systems in Mexico. Calculations were based on National Agriculture and Forestry Census 2007 microdata, irrigation water requirements estimated from state-level climate data, and energy and emission coefficients from the literature. Weighted average irrigation energy and related emissions are in the range of 1.0–31.6 GJ/ha and 62.0–2,019.9 kg CO₂e/ha, respectively, while country-scale estimates amount to 4.8 PJ and 305.2 Gg CO₂e.