|
|
Cereals: Barley: Powdery
Mildew (Erysiphe graminis)
Pub 812: Field Crop Protection
Guide > Chapter
4: Cereals > Barley: Powdery Mildew
Field Crop Protection Guide 2011-2012, Order
2011-2012 publication
Table of Contents
- Foliar, Stem and Head Diseases
- propiconazole – Bumper 418 EC
- tebuconazole - Folicur 250 EW, Folicur 432 F
- trifloxystrobin + propiconazole - Stratego 250 EC
- prothioconazole + tebuconazole - Prosaro 250 EC
- Related links...
Foliar, Stem and Head Diseases
Foliar fungicide applications may be necessary if disease levels
will result in yield losses and susceptible variety has been used.
Consult with your seed company and the Ontario Cereal Crops Committee
Variety Trial Results at www.gocereals.ca
for variety profiles.
| Active ingredient |
propiconazole |
| Trade name |
Bumper 418 EC |
| Rate per hectare (product) |
300 mL per ha |
| Rate per acre (product) |
121 mL per ac |
| PHI* |
45 |
| Comments |
For use in spring barley only. Ground and
aerial application. Apply at early signs of disease from the
beginning of stem elongation (Zadok's 29-37). If conditions
favourable to disease continue, apply again, if necessary, before
head is half emerged (Zadok's 49-55). Maximum 2 applications/yr. |
| Active ingredient |
tebuconazole |
| Trade name |
Folicur 250 EW |
| Rate per hectare (product) |
375-500 mL per ha |
| Rate per acre (product) |
152-200 mL per ac |
| PHI* |
36 |
| Comments |
Ground and aerial application. Apply at the very early stages
of disease development. Use higher rate when disease pressure
is severe. The use of a non-ionic surfactant (Agral 90 or
AgSurf) is NOT required as it is built into the formulation.
Use a minimum of 100 L/ha of water for ground application,
47 L/ha of water for aerial application. Maximum 1 application/yr.
12-hr re-entry period.
Before using Folicur for wheat leaf diseases, consider
that Folicur can only be applied once per year and has been
traditionally used for Fusarium control, where applications
are targeted at head emergence.
|
| Active ingredient |
tebuconazole |
| Trade name |
Folicur 432 F |
| Rate per hectare (product) |
220-292 mL per ha |
| Rate per acre (product) |
90-118 mL per ac |
| PHI* |
36 |
| Comments |
Ground and aerial application. Apply at the very early stages
of disease development. Use higher rate when disease pressure
is severe. Use non-ionic surfactant such as Agral 90 or Agsurf
at 0.125% vol/vol. Use a minimum of 100 L/ha of water for
ground application, 47 L/ha of water for aerial application.
Maximum 1 application/yr. 12-hr re-entry period.
Before using Folicur for wheat leaf diseases, consider
that Folicur can only be applied once per year and has been
traditionally used for Fusarium control, where applications
are targeted at head emergence.
|
| Active ingredient |
trifloxystrobin + propiconazole |
| Trade name |
Stratego 250 EC |
| Rate per hectare (product) |
500 mL per ha |
| Rate per acre (product) |
200 mL per ac |
| PHI* |
Do not apply at boot stage and beyond. |
| Comments |
Ground and aerial application. Do not apply the second application
within 14 days of the first. Apply only up to flag leaf fully
emerged stage (Zadok's 39). Do not apply at boot stage (Zadok's
47) and beyond. Maximum 2 applications/yr. 12-hr re-entry period.
|
| Active ingredient |
prothioconazole + tebuconazole |
| Trade name |
Prosaro 250 EC |
| Rate per hectare (product) |
800 mL per ha |
| Rate per acre (product) |
324 mL per ac |
| PHI* |
36 |
| Comments |
Ground and aerial application. Use a minimum of 100 L/ha of
water for ground application, 50 L/ha of water for aerial application.
Maximum 1 application/yr. 12-hr re-entry period. |
Related links...
For more information:
Toll Free: 1-877-424-1300
Local: (519) 826-4047
E-mail: ag.info.omafra@ontario.ca
|
