Diseases in Wheat - In Crop
- Historically flag smut was an important disease of wheat in Victoria
- In recent years this disease has been controlled with the use of resistant varieties and treatment of seed with fungicides
- Long, black raised streaks on the leaves, leaf sheaths, awns and stems
- Mass of powdery grey-black spores which easily rub off onto a finger
- Infected stems are stunted, distorted and seldom produce ears
- Infected leaves do not expand fully and remain rolled and twisted
- Not all tillers on a plant will exhibit symptoms
- Losses from flag smut of wheat, when the disease occurs, are generally in the range of 5 to 20 per cent, however complete crop losses are not unknown
Links and Resources
DAFWA - Farmnote 465. Flag smut
Page contains information on cereal seed dressing and in-furrow fungicides used for flag smut, disease diagnosis, cautions, and further contacts. Page updated 2011.
DEPI VIC - Flag Smut
The section detailing flag smut of wheat begins with a brief introduction, symptoms, life cycle, and control. Published 2007, updated 2013.
Victorian winter crop summary 2014 - Flag smut
Table 6: Wheat disease guide. Page 11. Causal organism, symptoms, occurrence, inoculum source, and control. Updated annually.