Weeds, Insects & Diseases

Common bunt [Tilletia spp. (T. caries, T. foetida)]


Disease Biology

Infection occurs from smut spores on seed or from spores in soil close to the seed. Soil-borne spores can last for decades. Spores germinate in cool conditions attacking the seedling before emergence. Its development is favoured by cool soil tempe...


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Damage Description

Bunt can be difficult to detect as it is inconspicuous in the standing crop until near maturity. Infected plants are moderately stunted and produce fewer, smaller heads than normal plants. In infected heads, gray-brown bunt balls filled with dark b...


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Management

Seed treatments with appropriate fungicides will provide good control. Also rotate crops and plant resistant varieties. Contact local advisers if infection occurs.


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Recommended solution

  • Cruiser Vibrance Quattro logo

    Cruiser® Vibrance® Quattro is a ready-to-use, water-based seed treatment formulation for use in commercial seed treatment facilities or on-farm, for the control of certain insect pests and seed- and soil-borne diseases in cereal crops.

Description

Infection occurs from smut spores on seed or from spores in soil close to the seed. Soil-borne spores can last for decades. Spores germinate in cool conditions attacking the seedling before emergence. Its development is favoured by cool soil temperatures.

  • Common bunt
  • Common bunt

Damage Description

Bunt can be difficult to detect as it is inconspicuous in the standing crop until near maturity. Infected plants are moderately stunted and produce fewer, smaller heads than normal plants. In infected heads, gray-brown bunt balls filled with dark brown spores replace all or some of the kernels. Crushing a bunt ball releases a foul, fishy odour.

Common bunt reduces yield and quality. Yeild losses are equivalent to the percentage of infected tillers. Grain contaminated with bunt balls is discounted at the elevator.

    Management

    Seed treatments with appropriate fungicides will provide good control. Also rotate crops and plant resistant varieties. Contact local advisers if infection occurs.

    Recommended solution

    • Cruiser Vibrance Quattro logo

      Cruiser® Vibrance® Quattro is a ready-to-use, water-based seed treatment formulation for use in commercial seed treatment facilities or on-farm, for the control of certain insect pests and seed- and soil-borne diseases in cereal crops.