SePRO · Decree® 50 WDG Fungicide FENHEXAMID GROUP 17 FUNGICIDE 50% · EPA Reg 70506-446-67690 · Fungicide
Document last checked 2026-05-30
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EPA registration data for Reg. 70506-446-67690 →
Decree 50 WDG is a Group 17 fungicide containing 50% Fenhexamid. It is a water-dispersible granule designed for the control of Botrytis diseases (such as Gray mold) in various greenhouse crops, ornamentals, forestry conifers, and non-bearing fruit trees and vines. It is also used to suppress Powdery Mildew in ornamentals. This product is for agricultural and ornamental horticultural use only and is not for residential use. When applying, ensure thorough coverage of flowers and fruiting parts for food crops. For ornamentals, coverage of foliage and stems is essential. Users should follow resistance management strategies, such as rotating with different Group 17 fungicides or using tank-mixes with different modes of action. Always use proper spray equipment calibration to minimize drift and ensure effective application. Note that this product is not registered for use on transplants or greenhouse production of cucumbers in California.
Pests covered (3)
Botrytis (Gray mold, Botrytis elliptica, Botrytis tulipana)Powdery Mildew (Uncinula necator)Botrytis, Gray Mold, Powdery Mildew
Areas treatable (2)
Greenhouse crops, ornamentals, forestry conifers, non-bearing fruit trees and vinesOrnamentals
How to treat each type of area 2
Greenhouse crops, ornamentals, forestry conifers, non-bearing fruit trees and vines
| Target pest |
Location |
Rate |
Unit |
Dilution |
Label notes |
| Botrytis (Gray mold, Botrytis elliptica, Botrytis tulipana) |
Both |
1.5 |
lb/A |
Stand-alone |
For food crops, coverage of all flowers and fruiting parts is essential. |
Ornamentals
- Target pest
- Powdery Mildew (Uncinula necator)
- Location
- Both
Mixing instructions 1
| For pests |
Location |
Amount |
Per |
Finished strength |
Label notes |
| Gray mold (Botrytis cinerea) |
Both |
1.0 - 1.5 |
lb/A |
0.5 - 0.75 lb a.i./A |
Tank-mixed with another fungicide registered for use on the specific crop. |
Worker safety
Re-entry interval (REI)
12
PPE required
Long-sleeved shirt and long pants; socks and shoes; chemical-resistant gloves made of any waterproof material.
Timing & weather
- Begin applications when conditions favor disease development.
- Repeat at 7-10 day intervals if conditions continue to favor disease.
- Avoid applications during gusty wind conditions or temperature inversions.
Use restrictions 8
- Not for residential use.
- Do not apply in field.
- Do not apply through any type of irrigation system.
- Do not apply more than 2-3 crop cycles per year.
- Do not apply more than 18.0 lb (9.0 lb a.i.) per acre per year.
- Do not apply more than 12 applications per acre per year at the highest use rate.
- Minimum application interval is 7 days.
- Not registered for use in California for cucumber transplants or greenhouse production.
Active ingredient
Decree® 50 WDG Fungicide FENHEXAMID GROUP 17 FUNGICIDE 50%
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