Wheat powdery mildew

Contributor: AgriNewTech
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

Prevention

Solution Production stage (if possible with reference to BBCH scale)
Wide crop rotations
Pre-season
Bury previous crop residues
Pre-season
Avoid sprinkler irrigation
From Sowing to Harvest

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
Synthetic fungicide
From BBCH 20 to BBCH 69
2
(COMET ® 250 EC) Dosage: 0,7-1 L/ha
QoI - outer membrane quinone inhibitors
High risk (11)
Azoxystrobin
Synthetic fungicide
From BBCH 30 to BBCH 69
2
(MIRADOR SC) Dosage: 0,8-1 L/ha
QoI - outer membrane quinone inhibitors
High risk (11)
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)
Prochloraz
Synthetic fungicide
From BBCH 30 to BBCH 69
2
(BREK DUO) Dosage: 1,96 L/ha
DMI - demethylation inhibitors - BEI Class I
Medium risk (3)
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)
Bromuconazole
Synthetic fungicide
From BBCH 30 to BBCH 69
2
(NINEVI®) 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)
Trifloxystrobine
Synthetic fungicide
QoI - outer membrane quinone inhibitors
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)
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.