Late blight
| Contributor: | Institut de Recerca i Tecnologia Agroalimentaries |
| Date Compiled: | 2025 |
Prevention
| Solution | Production stage (if possible with reference to BBCH scale) |
|---|---|
|
Areate the greenhouse
|
From Sowing/Planting to Harvest
|
|
Drip irrigation
|
From Sowing/Planting to Harvest
|
|
Avoid stagnant water
|
From Sowing/Planting to Harvest
|
Monitoring
| Solution | Production stage (if possible with reference to BBCH scale) |
|---|---|
|
Observation: presence/absence
|
From Sowing/Planting to Harvest
|
|
Favourable weather conditions
|
From Sowing/Planting to Harvest
|
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 | 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
|
Elemental 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 - FZB24
|
Microbiological fungicide
|
BBCH 10 - 99
|
1 - 10
|
(TAEGRO® ) Doage: 0,185 - 0,37 kg/ha
|
|
|
|
Trichoderma asperellum (ICC012) + Trichoderma gamsii (ICC080)
|
Microbiological fungicide
|
Apply by wetting the substrate in pre-sowing or pre-transplanting and repeat at planting or transplanting.
|
2 per crop cycle
|
(BLINDAR) Dosage 2,5 kg/ha
|
|
|
|
Clonostachys rosea strain J1446
|
Microbiological fungicide
|
BBCH 15-89
|
4-6
|
(PRESTOP® ) Dosage: 2,5 - 10 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 | 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) |
|---|---|---|---|---|---|---|
|
Cymoxanil
|
Synthetic fungicide
|
Start of treatments since there are favorable conditions for the development of infection. Suspend treatments 3 days before harvest
|
3
|
(CURZATE®) Dosage: 840 g/ha.
|
Cyanoacetamide-oxime
|
Low to medium risk (27)
|
|
Methyram
|
Synthetic fungicide
|
Start of treatments since there are favorable conditions for the development of infection. Suspend treatments 7 days before harvest
|
3
|
(CABRIO® TOP) Dosage: 1,5-2 L/ha.
|
Dithiocarbamates and relatives (electrophiles)
|
Low risk (M03)
|
|
Propamocarb
|
Synthetic fungicide
|
Start of treatments since there are favorable conditions for the development of infection. Suspend treatments 3 days before harvest
|
2
|
(PREVICUR® ENERGY) Nursery, soil and foliar treatments possible. Read label to know dosages
|
Carbamates
|
Low to medium risk. (28)
|
|
Azoxystrobin
|
Synthetic fungicide
|
Start treatments no earlier than 3 weeks after transplanting. Suspend treatments 3 days before harvest
|
3 (Between Fenamidone, 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 Fenamidone, Pyraclostrobin, Tryfloxistrobin and Azoxystrobin)
|
(CABRIO® TOP) Dosage: 1,5-2 L/ha.
|
QoI-fungicides (Quinone outside inhibitors)
|
High risk (11)
|
|
Fosetyl-Aluminium
|
Synthetic fungicide
|
Start of treatments since there are favorable conditions for the development of infection. Suspend treatments 3 days before harvest
|
2
|
(PREVICUR® ENERGY) Nursery, soil and foliar treatments possible. Read label to know dosages
|
Phosphonates
|
Low level (P07)
|
|
Ciazofamid
|
Synthetic fungicide
|
Start of treatments since there are favorable conditions for the development of infection. Suspend treatments 3 days before harvest
|
3
|
(RANMAN TOP) Dosage: 0,5 L/ha.
|
QiI - fungicides (Quinone inside inhibitors)
|
Resistance risk unknown but assumed to be medium to high (21)
|
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.