Septoriosis

Stagonospora sp. , Septoria sp.
Contributor: Wageningen University & Research
Date Compiled: 2025
Creative Commons "Attribution-Share Alike"
Septoria (Septoria leaf spot); Symptoms on winter wheat leaf. Image copyright: ©William M. Brown Jr./via Bugwood.org - CC BY 3.0 US

Prevention

Solution
Strip cropping (oats)

Solution
Selection of resistant plant material

Monitoring

Solution Production stage (if possible with reference to BBCH scale)
Scouting (only apply fungicide if Septoria leaf spot indcidence is >10 to 25%)
BBCH 32-41

Control

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)
Fluoxastrobin
Synthetic fungicide
From BBCH 20 to BBCH 59
2
(FANDANGO) Dosage: 1.5 L/ha
QoI outer membrane quinone inhibitors
High risk (11)
Folpet
Synthetic fungicide
From BBCH 30 to BBCH 70
2
(MIRROR) Dosage 1.5 L/Ha
Multi-site activity
Low to medium (4)
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)
Benzovindiflupyr
Synthetic fungicide
From BBCH 30 to BBCH 69
1
(ELATUS® ERA) Dosage: 0,75-1 L/ha
SDHI - Succinate Dehydrogenase Inhibitors
Medium to high risk (7)
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)
Penthiopyrad
Synthetic fungicide
From BBCH 30 to BBCH 50
2
(AVELLA) Dosage: 1.5 L/ha
SDHI - Succinate Dehydrogenase Inhibitors
Medium to high risk (7)
Fluopyram
Synthetic fungicide
From BBCH 25 to BBCH 70
2
(ASCRA® XPRO) Dosage: 1,2-1,5 L/ha
SDHI - Succinate Dehydrogenase Inhibitors
Medium to high risk (7)
Fenpicoxamid
Synthetic fungicide
From BBCH 30 to BBCH 51
(QUEEN) Dosage 1.5 L/Ha
QIL - Quinone inside Inhibitor
Medium to high risk (21)
Magnesium hydroxicide
Synthetic fungicide
From BBCH 30 to BBCH 69
3
(MAGNESIUM HYDROXIDE E528) Dosage: 8 L/Ha
Basic substance
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.