How can plant disease outbreaks affect food prices and farmers’ incomes?

Plant disease outbreaks significantly impact the global economy by disrupting food supply chains and agricultural productivity. When crops are destroyed or yields are reduced, the resulting scarcity leads to higher prices for consumers.1

For farmers and distributors, these outbreaks cause a direct reduction in income due to the loss of marketable produce. In severe cases, such as the late blight of potato in 19th-century Ireland, the economic consequences can be catastrophic, leading to widespread famine, mass migration, and long-term shifts in the economic and political development of nations.1

While modern agricultural practices—such as the use of disease-resistant varieties, quarantine, and forecasting services—help mitigate these risks, the threat remains particularly acute in less-developed regions. In these areas, limited access to disease-control methods can result in annual crop losses of 30 to 50 percent, threatening the livelihoods of those who depend on the land for survival.1