Alternaria

Contributor: Université de Liège
Date Compiled: 2025
Creative Commons "Attribution-Share Alike"
Image copyright: ©Jochen Kreiselmaier - Plant protection consultant at the Rural Area Service Center (Dienstleistungszentrum Ländlicher Raum), Neustadt/Wstr/via Wikimedia Commons - CC BY-SA 4.0

Prevention

Solution
Ensure a three years delay between two cabbages crops
Limit cruciferous weeds in crops
Limit sprinkler irrigation
Use of treated seeds
Incorporate crop residues in the soil

Control

Regulations surrounding biological products can change rapidly – always verify products recommended here with the most recent legislation and lists of products registered for your country
Solution Max nb. of a. i. application/year Application Details and Notes (commercial product example)
Bacillus amyloliquefaciens souche FZB24
12
TAEGRO , dosage: 0.37 kg/ha

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 Max nb. of a. i. application/year Application Details and Notes (commercial product example) Chemical Group
See Phytoweb (link in sources) for the most up to date information on chemical products
Azoxystrobin
Synthetic fungicide
2
AZBANY, dosage: 1 L/ha. 10 m buffer zone from surface water using conventional techniques.
QoI-fungicides (Quinone outside Inhibitors)
Difenoconazole
Synthetic fungicide
2
BONECO, dosage: 0,5 L/ha
DMI-fungicides (DeMethylation Inhibitors) (SBI: Class I)
Boscalid, pyraclostrobine
3
BIGALO, dosage: 1 kg/ha (dissolved in min. 400 L/ha)
Difenoconazole, fluxapyroxad
3
DAGONIS, dosage: 1 L/ha (to be applied on BBCH 41 - 49)
Prothioconazole
3 (14 days between 2 applications
RUDIS, dosage: 0,4 L/ha (pre harvest delay: 21 days)
Fluopyrame, trifloxystrobine
1
LUNA SENSATION, dosage: 0,5 L/ha (to be applied n BBCH 41 - 49)
Trifloxystrobine, tebuconazole
2
NATIVO 75 WG, dosage: 0,36 kg/h, to be applied on BBCH 41 - 49, 20 m buffer zone from surface waters using technology that reduces drift by 50%.
Azoxystrobine, difenoconazol
2
ORTIVA TOP, doage: 1 L/ha, preventive application or first signs of infection
Tebuconazole
1
RIZA EC, dosage: 1,25 L/ha, to be applied on BBCH ≥ 41, 3 days before re accessing field, pre harvest delay of 35 days, buffer zone of 10m from surface water
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.