CaroVail · Chlorothalonil · EPA Reg 66222-277 · Fungicide
Document last checked 2026-05-30
According to the label From the product label
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EPA registration data for Reg. 66222-277 →
Bravo Ultrex is a fungicide used to control various plant diseases in a wide range of crops, including asparagus, beans, blueberries, cabbage, broccoli, carrots, celery, and corn. The active ingredient is chlorothalonil at a concentration of 82.5%. It is formulated as a water-dispersible granule (WG) and can be applied via spray or through irrigation systems. For asparagus, it controls rust, purple spot, and cercospora leaf blotch. For beans, it targets rust, anthracnose, downy mildew, cercospora leaf blotch, and ascochyta blight. Application rates vary significantly by crop and target disease, ranging from 1.25 to 18 lbs of product per acre. When using irrigation systems, ensure proper injection equipment and check valves are in place to prevent backflow. Users must follow Worker Protection Standard (WPS) requirements, including a restricted-entry interval (REI) of 12 hours. Personal protective equipment (PPE) includes chemical-resistant gloves, protective eyewear, and chemical-resistant headgear. Always avoid application during temperature inversions or high wind conditions to prevent drift. Do not apply to greenhouse crops or within 7 to 14 days of harvest, depending on the specific crop.
Pests covered (8)
Rust, Purple spot, Cercospora leaf blotchRust, Anthracnose, Downy mildew, Cercospora leaf blotch, Ascochyta blightFor suppression of Anthracnose (ripe rot), Mummy blightAlternaria leaf spotRing spotCercospora leaf spot, Alternaria leaf blightEarly blight, Late blight, Basal stalk rot, Pink rotHelminthosporium leaf blots
Areas treatable (8)
AsparagusBeans (Dry)BlueberriesCabbageBroccoli, Chinese Broccoli, Brussels SproutsCarrotCeleryCorn
How to treat each type of area 8
Asparagus
| Target pest |
Location |
Rate |
Unit |
Label notes |
| Rust, Purple spot, Cercospora leaf blotch |
Outdoor |
1.8 to 3.6 |
lb ai/A |
Apply 25 to 50 gallons of water per acre. Repeat applications at 7-10 day intervals. |
Beans (Dry)
| Target pest |
Location |
Rate |
Unit |
Label notes |
| Rust, Anthracnose, Downy mildew, Cercospora leaf blotch, Ascochyta blight |
Outdoor |
1.25 to 1.8 |
lb ai/A |
Apply in sufficient water to obtain adequate coverage. Begin applications during early bloom stage. Do not apply within 14 days before harvest. |
Blueberries
| Target pest |
Location |
Rate |
Unit |
Label notes |
| For suppression of Anthracnose (ripe rot), Mummy blight |
Outdoor |
2.7 to 3.6 |
lb ai/A |
Use 2.7 to 3.6 lb in sufficient water to obtain adequate coverage, normally 20 to 100 gallons per acre. Repeat at 10-day intervals. |
Cabbage
| Target pest |
Location |
Rate |
Unit |
Label notes |
| Alternaria leaf spot |
Outdoor |
1.4 |
lb ai/A |
Use in sufficient water to obtain adequate coverage. Begin applications after transplants are set in field. |
Broccoli, Chinese Broccoli, Brussels Sprouts
| Target pest |
Location |
Rate |
Unit |
Label notes |
| Ring spot |
Outdoor |
1.4 |
lb ai/A |
For field-seeded sprouts, begin applications at time of early sprout development. |
Carrot
| Target pest |
Location |
Rate |
Unit |
Label notes |
| Cercospora leaf spot, Alternaria leaf blight |
Outdoor |
1.4 to 1.8 |
lb ai/A |
Use in sufficient water to obtain adequate coverage. Start applications when disease threatens. |
Celery
| Target pest |
Location |
Rate |
Unit |
Label notes |
| Early blight, Late blight, Basal stalk rot, Pink rot |
Outdoor |
1.4 to 1.8 |
lb ai/A |
For celery seedlings, apply in a spray of 125 gallons per acre twice weekly or as needed. |
Corn
| Target pest |
Location |
Rate |
Unit |
Label notes |
| Helminthosporium leaf blots |
Outdoor |
0.7 to 1.8 |
lb ai/A |
Use in sufficient water to obtain adequate coverage. Begin applications when conditions favor disease development. |
Mixing instructions 1
| Label notes |
| When using irrigation systems, ensure the amount of Bravo Ultrex is calculated to cover the intended area. Agitation is recommended. |
Worker safety
Re-entry interval (REI)
12
PPE required
Chemical-resistant gloves (Category A), protective eyewear, chemical-resistant headgear, and protective footwear.
Timing & weather
- Avoid application during temperature inversions.
- Avoid application in high wind conditions to prevent drift.
Use restrictions 5
- DO NOT use on greenhouse-grown crops.
- DO NOT combine with certain pesticides like Dylin, Latron B-1956, or Latron AG-98.
- Do not apply within 7 to 14 days of harvest depending on crop.
- Do not apply to sweet corn to be processed.
- Do not allow livestock to graze in treated fields.