Wheat powdery mildew

Contributor: Association de Coordination Technique Agricole
Date Compiled: 2024
Creative Commons "Attribution-Share Alike"
Blumeria graminis (powdery mildew of grasses and cereals); Powdery mildew on leaf with cleistothecia present. Image copyright: ©Phil Sloderbeck, Kansas State University/via Bugwood.org - CC BY-NC 3.0 US

Monitoring

Solution
Tripping threshold: 10-12 pustules evenly distributed on the last 2 leaves.

Control

Solution Product Category Production stage (if possible with reference to BBCH scale) Max nb. of a. i. application/year Application Details and Notes (commercial product example) Chemical Group
Sulfur
Inorganic fungicide
Start of treatments since there are favorable conditions for the development of infection. Suspend treatments 5 days before harvest
1
(Zolfo Flow MCT) Dosage: 5-7 kg/ha
Inorganic sulfur

Regulations surrounding chemical products can change rapidly – always verify chemicals recommended here with the most recent legislation and lists of products registered for your country
Solution Product Category Production stage (if possible with reference to BBCH scale) Max nb. of a. i. application/year Application Details and Notes (commercial product example) Chemical Group Risk resistance (FRAC Code)
Pyraclostrobin
Bixafen
Synthetic fungicide
From BBCH 30 to BBCH 50
2
(ASCRA® XPRO) Dosage: 1,2-1,5 L/ha
SDHI - succinate dehydrogenase inhibitors
Medium to high risk (7)
Fluxapyroxad
Synthetic fungicide
From BBCH 25 to BBCH 69
2
(PRIAXOR) Dosage: 1-1,5 L/ha
SDHI - succinate dehydrogenase inhibitors
Medium to high risk (7)
Tebuconazole
Synthetic fungicide
From BBCH 30 to BBCH 49
2
(FOLICUR WG) Dosage: 1 kg/ha
DMI - demethylation inhibitors - BEI Class I
Medium risk (3)
Metconazole
Synthetic fungicide
From BBCH 20 to BBCH 69
2
(APTRELL®) Dosage: 1L/ha
DMI - demethylation inhibitors - BEI Class I
Medium risk (3)
Prothioconazole
Synthetic fungicide
From BBCH 30 to BBCH 69
2
(PROSARO®) Dosage: 1 L/ha
DMI - demethylation inhibitors - BEI Class I
Medium risk (3)
Tetraconazole
Synthetic fungicide
From BBCH 40 to BBCH 69
1
(EMERALD 40 EW) Dosage: 3 L/ha
DMI - demethylation inhibitors - BEI Class I
Medium risk (3)
Fenpropidin
Synthetic fungicide
1
Amines - IBE-Class II morpholines
Low to medium risk (5)
Spiroxamine
Synthetic fungicide
From BBCH 20 to BBCH 69
1
(SOLIGOR®) Dosage: 0,7-1 L/ha
Amines - IBE-Class II morpholines
Low to medium risk (5)
Cyflufenamid
Synthetic fungicide
FRAC U06
Pyriofenone
Synthetic fungicide
FRAC 50
Metrafenone
Synthetic fungicide
FRAC 50
Proquinazide
Synthetic fungicide
FRAC 13
The information made available here has been obtained from or is based upon sources believed by CABI to be reliable but is not guaranteed as to accuracy or completeness. Anyone acting or relying on such information does so entirely at their own risk. The efficacy of the IPM methods included above will depend on local conditions and might not always be suitable everywhere within the specified country.