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Impact of Climate Change on Corn Yields in Alabama

Author

Listed:
  • Welikhe, Pauline
  • Essamuah-Quansah, Joseph
  • Boote, Kenneth
  • Asseng, Senthold
  • El Afandi, Gamal

Abstract

The study used calibrated Crop Environment Resource Synthesis (CERES) maize (corn) model to simulate maize (corn) physiological growth processes and yields under 2045 and 2075 projected climate change scenarios for six representative counties in Alabama. The future climatologies for two emission scenarios Representative Concentration Pathway (RCP) 4.5 (medium) and RCP 8.5 (high) were developed based on the IPSL-CM5A-MR high resolution climate model. Average yield decreases of 19.5% and 37.3% were, respectively, projected under RCP 4.5 and RCP 8.5 for 2045, and average yield decreases of 32.5% and 77.8% were, respectively, projected under RCP 4.5 and RCP 8.5 for 2075. These yield decreases were largely influenced by increasing temperatures as evidenced by the shortening of various development stages such as anthesis and maturity, which are important determinants of the final grain yield and number. Corn production in Autauga County was projected to be highly vulnerable to climate change, while production in Limestone County was least vulnerable. Corn crops in Alabama appear to be sensitive to climate change and will require adaptation strategies.

Suggested Citation

  • Welikhe, Pauline & Essamuah-Quansah, Joseph & Boote, Kenneth & Asseng, Senthold & El Afandi, Gamal, 2016. "Impact of Climate Change on Corn Yields in Alabama," Professional Agricultural Workers Journal (PAWJ), Professional Agricultural Workers Conference, vol. 4(1), pages 1-16, October.
    • Handle: RePEc:ags:pawjal:253128
    DOI: 10.22004/ag.econ.253128
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    References listed on IDEAS

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    1. Jones, Peter G. & Thornton, Philip K., 2013. "Generating downscaled weather data from a suite of climate models for agricultural modelling applications," Agricultural Systems, Elsevier, vol. 114(C), pages 1-5.
    2. Chengyi Huang & Sjoerd Willem Duiker & Liangji Deng & Conggang Fang & Weizhong Zeng, 2015. "Influence of Precipitation on Maize Yield in the Eastern United States," Sustainability, MDPI, vol. 7(5), pages 1-15, May.
    3. Akpalu, Wisdom & Hassan, Rashid M. & Ringler, Claudia, 2008. "Climate variability and maize yield in South Africa: Results from GME and MELE methods," IFPRI discussion papers 843, International Food Policy Research Institute (IFPRI).
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