Early blight

Contributor: Association de Coordination Technique Agricole
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)
Avoid water stagnation and limit irrigation
From Sowing/Planting to Harvest
Use healthy or disinfested seeds
Sowing
Remove infected vegetation, which should not be buried in any case.
From Pre-season to Harvest

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)
Bacillus amyloliquefaciens strain MBI600
Microbiological fungicide
from BBCH 51 to BBCH 89
6
(SERIFEL®) Dosage: 0,25 Kg/ha.
FRAC Group: F
Bacillus subtilis strain QST 713
Microbiological fungicide
from BBCH 13 to BBCH 89
6
(SERENADE® ASO) Dosage: 4-8 L/ha.
Not know (BM02)
Bacillus amyloliquefaciens strain FZB24
Microbiological fungicide

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)
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.