Late blight

Contributor: Association de Coordination Technique Agricole
Date Compiled: 2024
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Image copyright: CABI

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

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 - FZB24
Microbiological fungicide
Sweet orange essential oil
Biological 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)
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)
Mandipropamid
Synthetic fungicide
Start of treatments since there are favorable conditions for the development of infection. Suspend treatments 3 days before harvest
4 (For all CAAs)
(PERGADO SC®) Dosage: 0,6 L/ha.
CAA-fungicides (Carboxylic Acid Amides)
Low to medium risk (40)
Amethoctradine
Synthetic fungicide
Start of treatments since there are favorable conditions for the development of infection. Suspend treatments 3 days before harvest
3
(ENERVIN® DUO) Dosage: 0,8 L/ha.
QoSI fungicides (Quinone outside inhibitor, stigmatellin binding type)
Medium to high (45)
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)
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)
Zoxamide
Synthetic fungicide
Start of treatments since there are favorable conditions for the development of infection. Suspend treatments 3 days before harvest
4
(ZOXIUM®240 SC) Dosage: 0,625-0,75 mL/ha.
Benzamides
Low to medium risk (22)
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.