Climate change, weather variability and corn yield at a higher latitude locale: Southwestern Quebec
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Climate change has led to increased temperatures, and simulation models suggest that this should affect crop production in important agricultural regions of the world. Nations at higher latitudes, such as Canada, will be most affected. We studied the relationship between climate variability (temperature and precipitation) and corn yield trends over a period of 33 years for the Monteregie region of south-western Quebec using historical yield and climate records and statistical models. Growing season mean temperature has increased in Monterregie, mainly due to increased September temperature. Precipitation did not show any clear trend over the 33 year period. Yield increased about 118 kg ha−1 year−1 from 1973 to 2005 (under normal weather conditions) due mainly to changes in technology (genetics and management). Two climate variables were strongly associated with corn yield variability: July temperature and May precipitation. These two variables explain more than a half of yield variability associated with climate. In conclusion, July temperatures below normal and May precipitation above normal have negative effects on corn yield, and the growing seasons have warmed, largely due to increases in the September temperature.
KeywordsJuly Temperature Yield Variability Corn Yield Grow Season Temperature Weather Variability
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- Agriculture and Agri-Food Canada (1997) Profile of production trends and environmental issues in Canada’s agriculture and agri-food sector. Ottawa, Ontario. Also available at (http://www.agr.ca/envire.html)
- Bootsma A, Tremblay G, Filion P (1999) Risk analyses of heat units available for corn and soybean production in Quebec. Technical Bulletin ECORC contribution No. 991396. Eastern Cereal and Oilseed Research Centre. Agriculture and Agri-Food Canada, Ottawa, OntarioGoogle Scholar
- Bootsma A, Anderson D, Gameda S (2004) Potential impacts of climate change on agroclimatic indices in Southern regions of Ontario and Quebec. Technical Bulletin ECORC Contribution No. 03-284. Eastern Cereal and Oilseed Research Centre. Agriculture and Agri-Food Canada, Ottawa, OntarioGoogle Scholar
- De Jong R, Li KY, Bootsma A et al (2001) Crop yield variability under climate change and adaptative crop management scenarios. Final Report for Climate Change Action Fund Project A080. Eastern Cereal and Oilseed Research Centre (ECORC). Agriculture and Agri-Food, CanadaGoogle Scholar
- IPCC (2001) Climate change 2001: The scientific basis. In: Houghton JT, Ding Y, Griggs DJ et al (eds) Cambridge University Press, UK. Available at (http://www.ipcc.ch)
- Thompson LM (1986) Climatic change, weather variability, and corn production. Agron J 78:649–653Google Scholar
- Wheaton E, Wittrock V, Kulshreshtha S et al (2005) Lessons learned from the Canadian drought years 2001 and 2002: Synthesis report. Prepared for Agriculture and Agri-Food Canada. Publication No. 11602-46E03. Saskatchewan Research Council (SRC), Saskatoon, SaskatchewanGoogle Scholar
- Zhang X, Vincent LA, Hogg WD et al (2000) Temperature and precipitation trends in Canada during the 20th century. Atmos Ocean 38:395–449Google Scholar