Thermal and moisture limits of grain maize in Europe: model testing and sensitivity to climate change
Year: 1992
Type: article
Abstract: Grain maize is a crop that is limited by both temperature and moisture availability in Europe.Thermal requirement data for different phases of development allowed the sensitivity of the European growing season to climate change to be tested.Within the thermal limits to crop development there are clearly differences in crop water relations, depending on soil water holding capacity, precipitation amount and potential evapotranspiration (PET) These factors are combined together in a crop-specific water balance model.The sensitivity of grain maize to changes in temperature and precipitation was tested with the model.Uncertainties are evident in the use of the Thornthwaite method of calculating PET.However, it is clear that increased temperatures will lead to increased PET.A temperature change of +2 "C has a significant negative effect on the water balance output.A 10 % increase in precipitation offsets this negative effect.These effects are partly offset by a shortened growing season, which leads to a lower accumulated water deficit.The result is compounded when the timing of sowing is taken into account.There is a net benefit from being able to sow earlier under a warmer climate.While this offers an important adaptation strategy it remains clear that conditions will continue to be water limited for grain maize production in southern Europe, and in many areas of expanded thermal potential.
Source: Climate Research
DOI: 10.3354/cr002113
Authors: GJ Kenny, PA Harrison
Institutions: University of Oxford, University of Waikato
Language: English
Subfield: Agronomy and Crop Science
Domain: Life Sciences
SDGs: Zero hunger, Climate action
Open Access status: bronze
OpenAlex ID: W2008848256