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Plant Health

Karnal Bunt

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Background
Karnal bunt is a fungal disease of wheat and triticale (a hybrid of wheat and rye). The disease is caused by the fungus Tilletia indica Mitra, also known as Neovossia indica. Typically, only a portion of the wheat kernel is affected; this is why the disease is sometimes called partial bunt. This disease is influenced by weather and climatic conditions - the most severe infections occur when there is cool and wet weather at the time the wheat is heading out. The disease was discovered in 1931 in the city of Karnal in northern India. The disease has been found in Pakistan, Afghanistan, Iran, Mexico (since the early 1980's), Nepal, Syria, and a few places in the United States.

 

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Frequently Asked Questions

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Strategic Plan (PDF; 179 Kb)

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View the Strategic Plan outlining the critical issues that would need to be addressed to overcome KB as a pest of quarantine concern.

Biology

National Survey

Program Manual (PDF; 3.60 Mb)

Karnal Bunt: A Fungal Disease of Wheat

Regulation, Federal Register Notices, and Forms

 

Last Modified: October 17, 2007