Wheat diseases

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The cereal grain wheat is subject to numerous wheat diseases, including bacterial, viral and fungal diseases.

In Europe[edit]

Cereals are at risk from numerous diseases due to the level of intensification necessary for profitable production since the 1970s. More recently varietal diversification, good plant breeding and the availability of effective fungicides have played a prominent part in cereal disease control. Use of break crops and good rotations are also good cultural control measures. The demise of UK straw burning in the 1980s also increased the importance of good disease control.

Active control measures include use of chemical seed treatments for seed-borne diseases and chemical spray applications for leaf and ear diseases. Development of resistance by diseases to established chemicals has been a problem during the previous 30 years.

Fungicides[edit]

Some cereal fungicide groups and examples of active ingredients:

Principal diseases[edit]

In the USA[edit]

Wheat is subject to more diseases than other grains, and, in some seasons, especially in wet ones, heavier losses are sustained from those diseases than are in other cereal crops. Wheat may suffer from the attack of insects at the root; from blight, which primarily affects the leaf or straw, and ultimately deprives the grain of sufficient nourishment; from mildew on the ear; and from gum of different shades, which lodges on the chaff or cups in which the grain is deposited.

Examples of wheat diseases[edit]

Bacterial diseases[edit]

Fungal diseases[edit]

Nematodes, parasitic[edit]

  • Grass cyst nematode Punctodera punctata
  • Root gall nematode Subanguina spp.

Viral diseases and viruslike agents[edit]

  • Agropyron mosaic genus Rymovirus, Agropyron mosaic virus (AgMV)
  • Barley stripe mosaic genus Hordeivirus, Barley stripe mosaic virus (BSMV)
  • Oat sterile dwarf genus Fijivirus, Oat sterile dwarf virus (OSDV)
  • Tobacco mosaic genus Tobamovirus, Tobacco mosaic virus (TMV)
  • Wheat dwarf genus Monogeminivirus, Wheat dwarf virus (WDV)
  • Wheat yellow mosaic Wheat yellow mosaic bymovirus

Phytoplasmal diseases[edit]

  • Aster yellows phytoplasma

References[edit]

Cereal Pests and Diseases (Gair, Jenkins, Lester) 1987 Farming Press ISBN 0-85236-164-5

External links[edit]

Further reading[edit]