Weeds, Insects & Diseases

Surface-borne smuts


Images

No image for this pest exists.


Disease Biology

These diseases are transmitted on the surface of healthy seed by spores spread from diseased heads. With common bunt winter wheat may also be infected by soil-borne spores.


View full description of Disease-Biology


Damage Description

Loss in yield is directly related to the percentage of diseased tilers. In addition there can be loss in quality with downgrading of smutty grain.


View more info Damage Description


Management

Common bunt of wheat is not easily visible in the field, but the bunt balls which form instead of kernels thresh out in the grain. Broken bunt balls release masses of black powdery spores along with a fishy odor. Oat smuts and covered smut of barle...


View Management info

Description

These diseases are transmitted on the surface of healthy seed by spores spread from diseased heads. With common bunt winter wheat may also be infected by soil-borne spores.

Damage Description

Loss in yield is directly related to the percentage of diseased tilers. In addition there can be loss in quality with downgrading of smutty grain.

    Management

    Common bunt of wheat is not easily visible in the field, but the bunt balls which form instead of kernels thresh out in the grain. Broken bunt balls release masses of black powdery spores along with a fishy odor. Oat smuts and covered smut of barley stunt plants and the more compacted heads show blackened kernels and deformed awns. At harvest, black powdery spores and parts of smutted heads are mixed in the grain. Use resistant varieties or disease free seed. There are no standards for pedigreed seed. Treat seed with a fungicide if smut is observed in a seed crop or if the variety has poor resistance.