Early blight

Contributor: Institut de Recerca i Tecnologia Agroalimentaries
Date Compiled: 2024
Creative Commons "Attribution-Share Alike"
Early blight of tomato Image copyright: James Muema, MOALFD, Kenya

Prevention

Solution Production stage (if possible with reference to BBCH scale)
Remove infected vegetation, which should not be buried in any case.
From Pre-season to Harvest

Monitoring

Solution
Observation: presence/absence

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 Risk resistance (FRAC Code)
Copper fungicides
Biological fungicide
Start treatments before the onset of the disease and repeat them as needed
28 kg/ha in 7 years. It is recommended not to exceed the average quantity of 4 kg/ha of copper per year on the crop
(IDROX 20) Dosage: 2,5-3 Kg/ha
Inorganic
Low risk (M01)

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)
Azoxystrobin
Synthetic fungicide
Start treatments no earlier than 3 weeks after transplanting. Suspend treatments 3 days before harvest
3 (Between Pyraclostrobin, Tryfloxistrobin and Azoxystrobin)
(ORTIVA®) Dosage: 0,8-1 L/ha.
QoI-fungicides (Quinone outside inhibitors)
High risk (11)
Pyraclostrobin
Synthetic fungicide
Start of treatments since there are favorable conditions for the development of infection. Suspend treatments 7 days before harvest
3 (Between Pyraclostrobin, Tryfloxistrobin and Azoxystrobin)
(CABRIO® TOP) Dosage: 1,5-2 L/ha.
QoI-fungicides (Quinone outside inhibitors)
High risk (11)
Cyflufenamid
Synthetic fungicide
Start of treatments since there are favorable conditions for the development of infection. Suspend treatments 3 days before harvest
2
(Cidely Top) Dosage: 1 L/ha.
Phenyl-acetamide
Resistance in Sphaerotheca. Resistance management required (U06)
Difenoconazole
Synthetic fungicide
when first symptoms occur. Suspend treatments 3 days before harvest
2 (Among all SBIs)
(DISCO) Broad spectrum systemic fungicide that acts by contact, with preventive control of the activity. Dosage: 0,3-0,5 L/ha
DMI-fungicides (Demethylation inhibitors) (SBI: Class I)
Medium risk (3)
Fluxapyroxad
Synthetic fungicide
Start of treatments since there are favorable conditions for the development of infection. Suspend treatments 3 days before harvest
2
(DAGONIS®) Dosage: 1 L/ha.
SDHI (Succinate dehydrogenase inhibitors)
Medium to high risk (7)
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.