Infinito
Infinito gives you control of all stages of the blight life cycle, as well as providing long-lasting control of foliar and tuber blight in order to maximise yields in your potato crop.
Product details
What is Infinito?
A protectant and systemic fungicide used to control late blight in potatoes.
Product Profile
Important Information
* Infinito also has a wide range of EAMUs (See When and how to apply)
Restrictions
To protect ground water do not apply this or any other product containing fluopicolide at a rate of more than 400 g/ha in any three year period.
For the 2025 season, Bayer advises that crops receive no more than 6060g propamocarb per Ha and that statutory spray application and harvest intervals for all products are observed.
Why you need Infinito
Infinito plays an essential role in any late blight control strategy delivering protectant, curative and anti-sporulant activity to protect crops at all stages of development.
The combination of fluopicolide and propamocarb – two complementary active substances from different mode of action groups – means there is no need to add another late blight fungicide to the spray tank either for resistance management or crop protection purposes.
In the majority of situations, Infinito is included in a programme from tuber initiation (see diagram). This makes best use of its anti-sporulant activity which helps to protect crops against the risk of tuber blight.
To comply with best practice guidelines, Infinito should be alternated with a product containing a different mode of action that also offers effective protection against tuber blight, such as those featuring amisulbrom or cyazofamid.
Neither active substance should be applied alone, however, nor in a mix together since both belong to the QiI mode of action group.
Whether this is possible will depend on the number of QiI and Infinito sprays used during the rapid growth phase, hence the importance of planning an appropriate strategy across the entire fungicide programme which will protect foliage and tubers from late blight and provide good resistance management.
Acknowledgement
The above is based on information contained in a 2018 report written by Ruairidh Bain (SRUC), Faye Ritchie (ADAS) and Neil Paveley (ADAS) entitled ‘Guidance on how the potato industry should respond to reduced fluazinam sensitivity in late blight populations’. It is available on the AHDB Potatoes website.
How does Infinito work?
Infinito is a co-formulation of fluopicolide and propamocarb; active substances which work together to protect every part of the potato plant – leaves, stems, tips and tubers – and attack the late blight pathogen at every stage of its life cycle. This performance is recognised in the EuroBlight rating for effectiveness against foliar blight, tuber blight and anti-sporulant efficacy.
Fluopicolide is a strong protectant fungicide and has translaminar mobility. It works by disorganising the pathogen’s cell structure, disrupting the formation of spectrin-like proteins, believed to play a vital role in maintaining the pathogen’s cytoskeleton stability. This novel mode of action is highly effective at all stages in the pathogen’s life cycle. Fluopicolide’s activity against motile zoospores is dramatic. Under the microscope, it is seen to halt their movement immediately on contact and in less than a minute they burst.
Propamocarb is also a strong protectant fungicide and has systemic mobility. It disrupts the formation of fungal cell walls by interfering with phospholipid and fatty acid synthesis. This mode of action attacks several stages in the life cycle and crucially pushes the pathogen into direct germination which limits spore production to a tenth of its potential.
With the highly aggressive blight strains now dominating, every opportunity must be taken to block the pathogen’s development at all stages of its the life cycle. Infinito is effective at all stages: sporulation, zoospore and cyst formation, zoospore mobility, cyst germination and mycelial growth.
Activity on both direct and indirect germination of sporangia provides strong and reliable action against the disease, regardless of temperature. Its power to control mycelial growth also blocks the pathogen’s sexual reproduction route by preventing the mycelia of different mating types from meeting.
How and when to apply
Diseases controlled
When used as part of a full blight protection programme of correctly timed sprays, Infinito gives control of late blight (Phytophthora infestans) in potatoes.
Infinito will protect tubers from the risk of late blight infection after harvest and reduce tuber blight incidence when used as part of a full blight protection programme from full canopy development to haulm desiccation.
Application
Applications must be made preventively as part of a blight control programme demonstrating regard for blight infection periods or local blight warnings. In the absence of any warnings, applications should commence when the crop meets along the row.
Apply Infinito only to dry foliage. Do not apply if rainfall or irrigation is imminent. Infinito is rainfast in 1 hour providing the spray has dried on the leaf.
For optimal performance and sound resistance management apply Infinito at 1.6 L/ha on a 7- to 10-day spray interval, depending on disease pressure. As disease pressure and the risk of late blight infection increases, the spray interval should be shortened. Irrigated crops should be treated as high risk.
Infinito may be applied at a shorter interval than indicated above should there be an agronomic need as long as all other conditions of use are followed, particularly the maximum number of treatments, maximum total dose and the latest timing.
Infinito should be applied as a protectant treatment. Do not apply as a curative treatment when blight is present in the crop. When blight has become readily visible (1% leaf area destroyed), fungicides have little effect on subsequent development. Stop using Infinito under these conditions.
Varieties
Infinito may be used on all varieties of potato and crops grown for seed.
Planning blight programmes
In the fight against late blight, Infinito is widely considered as a ‘must have’ product of any blight strategy. To get the most from its foliar and tuber blight efficacy and anti-sporulant mobility it is best used through the stage of crop growth when the risk of foliar blight is high and/or when conditions are conducive to tuber infection. Generally, this means from canopy compete onwards.
A sound strategy is to plan to incorporate sprays of Infinito in alternation with complimentary fungicides from canopy complete until complete haulm destruction (see diagram). Not all Infinito sprays need be aimed at high-risk periods. It has been recognised that tuber protection is best delivered through regular applications commencing shortly after tuber initiation.
This approach is far more effective than waiting until blight is active in the canopy and spores are being washed down to the soil below before introducing fungicides with tuber blight activity. Using Infinito from canopy complete onwards in this way will build in the strongest possible level of tuber protection.
To obtain the best protection against all strains of late blight use Infinito at 1.6 L/ha at 7-day spray intervals in programmes with fungicides from different mode of action groups. Once the maximum total dose of 6.4 L/ha per crop has been reached, switch to other products with tuber blight activity to complete the programme.
Resistance management
To reduce the incidence of resistance developing, no fungicide, including Infinito, should be applied sequentially. Products must always be alternated with others belonging to a different mode of action group.
For the latest guidelines refer to the FRAG-UK[AW1] website where resistance management guidelines are published annually.
Disclaimer
Certain diseases may develop resistance to Bayer's products. Since such circumstances are beyond our control, Bayer does not accept liability for any loss or damage whatsoever.
For the latest guidelines refer to the FRAG-UK website where resistance management guidelines are published annually.
Late Blight Knowledge Hub
Learn more about the dynamics of Late Blight populations, Integrated Crop Management, the characteristics of Late Blight Fungicides, and how to plan an effective blight control strategy here.
Broccoli/calabrese, Brussels sprout, cabbage, cauliflower, kale, collard
This Extension of Authorisation for Minor Use (EAMU) relates to the use of Infinito to control downy mildew (Peronospora spp.) on protected and outdoor broccoli / calabrese, Brussels sprouts, cabbage, cauliflower, kale and collards.
Applications should be made using conventional hydraulic spray equipment at a maximum application rate of 1.6 litres product per ha in a minimum water volume of 200 litres per ha. Applications made at BBCH 40 or later must use a minimum water volume of 500 litres per ha.
Only one application is to be made indoor (greenhouse) prior to transplanting, with the latest timing of application of BBCH 14 (before 4 true leaves).
Only one application is to be made outdoors between BBCH 20 and BBCH 49 and should be applied no later than 14 days before harvest.
Applications must only be made between 1 April and 31 October. Growers are advised to test a small area of crop prior to wider commercial use.
Neither the efficacy nor the phytotoxicity of the product for which this extension of authorisation has been granted has been assessed and, as such, the user bears the risk in respect of failures concerning its efficacy and phytotoxicity.
EAMU – bulb onion, shallot, garlic, leek and salad onion
This Extension of Authorisation relates to the use of Infinito to control downy mildew on bulb onion, shallot, garlic, leek and salad onion and white tip (Phytophthora porri) in leek.
Applications to be made using conventional hydraulic spray equipment in a minimum water volume of 200 litres.
A maximum of one application per year in the same area of land must not be exceeded. Growers are advised to test a small area of crop prior to wider commercial use.
Neither the efficacy nor the phytotoxicity of the product for which this extension of authorisation has been granted has been assessed and, as such, the user bears the risk in respect of failures concerning its efficacy and phytotoxicity.
EAMU – Radish
This Extension of Authorisation relates to the use of Infinito on outdoor radish for the control of downy mildew (Peronospora parasitica) and Soil rot (Pythium aphanidermatum).
Applications to be made using a horizontal boom sprayer in a minimum of 200 litres per ha on outdoor crops.
A maximum of one application per year in the same area of land must not be exceeded.
Applications must only be made between growth stages BBCH 10 and BBCH 49.
Neither the efficacy nor the phytotoxicity of the product for which this extension of authorisation has been granted has been assessed and, as such, the user bears the risk in respect of failures concerning its efficacy and phytotoxicity.
EAMU – Outdoor lettuce, leaf crops and herbs
This Extension of Authorisation relates to the use of Infinito to control downy mildew (Bremia lactucae) on lettuce, and downy mildew (Peronospora spp.) on sage, mint, parsley and basil. See EAMU for full list of crops/situations.
Applications to be made using conventional hydraulic spray equipment in a minimum water volume of 200 litres per ha.
Applications must only be made between growth stages BBCH 10 and BBCH 49.
A maximum of one application per year in the same area of land must not be exceeded. Growers are advised to test a small area of crop prior to wider commercial use.
Neither the efficacy nor the phytotoxicity of the product for which this extension of authorisation has been granted has been assessed and, as such, the user bears the risk in respect of failures concerning its efficacy and phytotoxicity.
EAMU – Protected angelica, leaf crops and herbs
This Extension of Authorisation relates to the use of Infinito for the control of downy mildew (Bremia lactucae and Peronospora spp.) applied via vehicle mounted boom sprayer, handheld manual (tank and lance) sprayer and handheld knapsack sprayer in 200 to 500 litres water per hectare. See EAMU for full list of crops/situations.
Applications must only be made between growth stages BBCH 10 and BBCH 49.
Applications made to growing harvestable plant parts (between BBCH 40 and BBCH 49) must be made in a minimum water volume of 500 litres/ha OR alternatively, in line with EFSA guidance, the growth stage for application must be restricted to: up to development of harvestable vegetative plant parts (BBCH40).
A maximum annual application rate of 100g/ha fluopicolide and 1000 g/ha propamocarb hydrochloride must not be exceeded when used on crops grown in soil under protection or crops grown in organic media under permanent protection with full enclosure (PPFE). A maximum of one crop may be treated per year where multiple crop cycles occur.
EAMU – Protected baby leaf, cress, escarole, Lambs lettuce and red mustard
This Extension of Authorisation relates to the use of Infinito for the control of downy mildew (Bremia lactucae and Peronospora spp.) to be applied via vehicle mounted boom sprayer, handheld manual (tank and lance) sprayer and handheld knapsack sprayer in 200 to 500 litres water per hectare. See EAMU for full list of crops/situations.
Applications must only be made between growth stages BBCH 10 and BBCH 49.
Applications made to growing harvestable plant parts (between BBCH 40 and BBCH 49) must be made in a minimum water volume of 500 litres/ha OR alternatively, in line with EFSA guidance, the growth stage for application must be restricted to: up to development of harvestable vegetative plant parts (BBCH40).
A maximum annual application rate of 100g/ha fluopicolide and 1000 g/ha propamocarb hydrochloride must not be exceeded when used on crops grown in soil under protection or crops grown in organic media under permanent protection with full enclosure (PPFE). A maximum of one crop may be treated per year where multiple crop cycles occur.
