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Official Pest Reports

Official Pest Reports are provided by National Plant Protection Organizations within the NAPPO region. These Pest Reports are intended to comply with the International Plant Protection Convention's Standard on Pest Reporting, endorsed by the Interim Commission on Phytosanitary Measures in March 2002.

USA Flag Statement on Xanthomonas vasicola pv vasculorum
Date posted: 09/02/2016
Contact: Pam Boehland, Public Affairs Specialist, at 301-851-4093

Some states have observed bacterial leaf streak disease symptoms in corn that are caused by the bacterium Xanthomonas vasicola pv. vasculorum (Xvv). This plant disease presents no health risks to people or animals, and there is no evidence of adverse impact on corn yield or quality from this plant disease. Bacterial leaf streak has been known to be present in several grain growing countries of the world with at least one occurrence dating back to the 1940s, but was first diagnosed in the United States July 2016.

USDA does not consider this plant disease to be of quarantine significance for domestic or international trade, and intends to address it like any other bacterial disease of corn.  Corn for consumption poses a negligible risk of establishment of the disease in plants, and unprocessed corn to be fed whole to animals poses a low risk of establishment of the disease in plants. Processed corn products will not transmit the disease to plants.  Growers, working with their state departments of agriculture and Extension, have safeguards, best management practices, and other tools to reduce risk of establishment of the disease in plants.

USDA will continue to work closely with state departments of agriculture, Extension services, and industry to provide information about the disease and appropriate management options.

For information about the biology, symptoms, or management of Xvv, please visit: http://cropwatch.unl.edu/bacterial-leaf-streak  or http://broderslab.agsci.colostate.edu/corn-bacterial-leaf-streak/



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