Cereals: Wheat: Loose Smut (Ustilago
tritici)
Pub 812: Field Crop Protection
Guide >
Chapter
4: Cereals > Wheat: Loose Smut
Field Crop Protection Guide 2011-2012, Order
2011-2012 publication
Table of Contents
- Integrated Pest Management Options
- carbathiin + thiram – Vitaflo 280
- tebuconazole + thiram – Raxil T
- tebuconazole + metalaxyl - Raxil MD
- difenoconazole + metalaxyl-M – Dividend XL RTA
- triadimenol – Baytan 30
- triticonazole + thiram – Gemini
- ipconazole - Rancona Apex
- Related links...
Integrated Pest Management Options
Seed Treatment
This fungus infects the embryo at flowering, thus it is seed-borne.
Light rains or heavy dew and moderate temperature, 15°C-16°C
(58°F-60°F) during flowering, favour infection. Sow pedigree
seed that is treated with a fungicide seed treatment. This disease
was quite important in Ontario wheat production, but the incidence
and hence its impact has been reduced substantially due to the effectiveness
of fungicide seed treatments. Good coverage of seed with fungicide
seed treatment is important.
| Active ingredient |
carbathiin + thiram |
| Trade name |
Vitaflo 280 |
| Rate (product) |
330 mL per 100 kg seed |
| Comments |
Do not graze or feed livestock on treated areas for 6 weeks
after planting. |
| Active ingredient |
tebuconazole + thiram |
| Trade name |
Raxil T |
| Rate (product) |
225 mL per 100 kg seed |
| Comments |
Do not graze or feed livestock on treated areas for 4 weeks
after planting. |
| Active ingredient |
tebuconazole + metalaxyl-M |
| Trade name |
Raxil MD |
| Rate (product) |
300 mL per 100 kg seed |
| Comments |
Do not graze or feed livestock on treated areas for 4 weeks
after planting. |
| Active ingredient |
difenoconazole + metalaxyl-M |
| Trade name |
Dividend XL RTA |
| Rate (product) |
325-650 mL per 100 kg seed |
| Comments |
For both commercial seed treatment plants and on-farm treatment
using standard gravity flow- or mist-type seed treatment equipment.
May also be used in treat-on-the-go seeder. Do not graze, feed
green forage or cut for hay within 55 days of planting. |
| Active ingredient |
triadimenol |
| Trade name |
Baytan 30 |
| Rate (product) |
50 mL per 100 kg seed |
| Comments |
Must be diluted with water prior to treatment of seed to ensure
uniform coverage. Treated seed will sometimes emerge more slowly
than untreated. Avoid late seeding of winter cereals. Do not
graze or feed livestock on treated areas for 40 days after planting. |
| Active ingredient |
triticonazole + thiram |
| Trade name |
Gemini |
| Rate (product) |
360 mL per 100 kg seed |
| Comments |
For both commercial seed treatment plants and on-farm treatment
using standard gravity flow- or mist-type seed treatment equipment.
May also be used in treat-on-the-go seeder. |
| Active ingredient |
ipconazole |
| Trade name |
Rancona Apex |
| Rate (product) |
325 mL per 100 kg seed |
| Comments |
Do not graze or feed livestock on treated areas for 30 days
after planting. |
Related links...
