Global rice production faces critical risks
The study indicates that temperatures exceeding 30°C during the grain-filling stage significantly reduce rice productivity, especially in regions experiencing prolonged heatwaves, where yields can drop by up to 8.1% with each one-degree increase in global temperature. The research confirms that the most severe impact of heat occurs during the reproductive phase, as it hampers the transfer of nutrients to the grains, effectively decreasing the number of seeds and the filling of the grains. Researchers recommend developing heat-resistant rice varieties and improving water and soil management. They note that areas in South and Southeast Asia are most vulnerable to this threat, and that the timing and duration of exposure to high temperatures are critical factors in determining the extent of damage.
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