Research Library

Late Blight

Late blight (caused by Phytophthora infestans) may be the most destructive pathogen of potato with respect to the effect this disease has had upon human history.  

Late blight was the biological cause of the Irish potato famine in the mid-1800’s.  The disease still can cause significant crop loss today. Many management options are available for managing potato late blight.



Additional Resources

Managing Potato Late Blight in 2018

Spring weather in 2018 was favorable for late blight development. Be sure you are taking steps to protect your potato crop. The spring weather experienced in southern Idaho was optimum for the development of late blight. With no late blight reported in the state in...

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Managing Late Blight in Southern Idaho in 2016

Late blight was positively confirmed in several counties in eastern Idaho in 2015. This increases the risk of the disease appearing again in 2016. The resources here will help you manage this devastating disease.  Presentations were given in American Falls and...

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