A National Project on Tomato & Potato Late Blight in the United States
A new website for USAblight.org is coming soon. Stay tuned!
Potato late blight lesion. Image courtesy of Jean Ristaino, NC State University.
Welcome to USA blight, a national website that acts as an information portal on late blight. You can report disease occurrences, submit a sample online, observe disease occurrence maps, and sign up for text disease alerts. There are also useful links to a decision support system, and information about identification and management of the disease.
Late blight of potato and tomato caused by Phytophthora infestans is a devastating disease worldwide and led to the Irish potato famine in 1845. Under favorable weather conditions, tomato and potato crops can be destroyed within days. Yield losses caused by late blight and the cost of control measures have been estimated to exceed 6.7 billion dollars annually and the disease is a major threat to food security worldwide.
Late blight has been reported in Onondaga Co., NY on tomato. Initial findings indicate that the strain detected is not a previously observed strain, and more evaluation is currently being done to learn more. Additional reporting on this news was featured on a gardening segment on North Country Public Radio. The segment can be listened to here.