A fungal root and crown disease (Gaeumannomyces tritici) of wheat, barley and other cereals that blackens roots and stem bases, causing stunted, prematurely ripened patches in fields known as whiteheads. It tends to build up in soil under continuous cereal cropping and typically declines after several consecutive years of wheat through a natural process called take-all decline, which is itself a well studied example of soil suppressiveness in plant pathology.
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Wheat, Crops Take-all disease (Gaeumannomyces tritici) is a major soil-borne root disease of continuously cropped wheat.
Sources
1. Take-all Disease (Wikipedia)
Wikimedia FoundationOpening definition paragraph
Take-all is a plant disease affecting the roots of grass and cereal plants in temperate climates caused by the fungus Gaeumannomyces tritici. All varieties of wheat and barley are susceptible. It is an important disease in winter wheat in Western Europe particularly, and is favoured by conditions of intensive production and monoculture.
lead description
A fungal root and crown disease (Gaeumannomyces tritici) of wheat, barley and other cereals that blackens roots and stem bases, causing stunted, prematurely ripened patches in fields known as whiteheads.
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