New research identifies regions where crops face the highest drought risks
Understanding how drought affects crop production is becoming increasingly important as weather patterns continue to change around the world. A new study by researchers from the University of Delaware and Politecnico di Torino has identified regions where crops are most vulnerable to drought-related losses.
The research examined 17 major crops, including corn, wheat, rice, and soybeans. Together, these crops account for nearly three-quarters of global food production. The study aimed to measure how sensitive different crops are to drought and identify areas where production is most at risk.
Researchers compared rainfed and irrigated farming systems. Rainfed crops depend entirely on natural rainfall, while irrigated crops receive additional water through systems such as sprinklers, canals, or hoses. The findings showed that rainfed crops are generally more vulnerable to drought because they lack a reliable water supply during dry periods.
In contrast, irrigated crops were found to be more resilient. Access to irrigation can help maintain crop growth and reduce losses even when rainfall is limited. In some situations, irrigated fields may continue producing stable yields despite drought conditions.
Using drought sensitivity data, the researchers mapped global drought hotspots. These are regions where crops are especially vulnerable to water shortages and production declines. Key hotspots identified in the study include parts of the Midwestern United States, eastern Brazil, eastern Spain, and central and northern India.
The researchers developed new metrics to better understand crop resilience and drought risk. These tools can help farmers, policymakers, and agricultural organizations identify vulnerable areas and plan strategies to improve food production stability.
As climate variability continues to influence farming, understanding where crops are most sensitive to drought can support better resource management and strengthen global food security. The findings provide valuable insights for improving agricultural resilience in regions facing increasing weather challenges.
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