Revus

Manufacturer
SYNGENTA
Category
Fungicides
Registered until
2026-01-31
Registration number
17443
Active materials
Links

FORMULATION & ACTIVE INGREDIENT: REVUS is a suspension concentrate containing 250 g/l (23.4% w/w) mandipropamid.

TARGETS: For the control of Foliar Blight (Phytophthora infestans) and protection against Tuber Blight in potatoes and the control of Downy Mildew on protected and outdoor lettuce, lamb’s lettuce, endives (including frisee and escarole), chicory (radicchio), rocket, red mustard, salad greens, spinach leaves, land cress, cress, purslane, spinach beet leaves (chard) and herbs.

RAINFASTNESS: 15 minutes.

DIRECTIONS FOR USE
IMPORTANT: This information is approved as part of the Product Label. All instructions within this section must be carefully read in order to obtain safe and successful use of this product.

PROPERTIES OF REVUS
REVUS is a foliar fungicide for the preventative control of Late Blight (Phythophthora infestans) in potatoes and Downy Mildew in lettuce, and is highly active against spore germination. Uptake into the leaf tissue assures good translaminar activity and inhibits mycelial growth during the incubation period.

DISEASE CONTROLLED
For the control of Foliar blight (Phytophthora infestans) and protection against tuber blight in potatoes. For the control of downy mildew on protected and outdoor lettuce, lamb’s lettuce, endives (including frisee, escarole and radicchio), rocket, purslane and herbs For the moderate control of downy mildew on protected and outdoor red mustard, baby leaf crops, spinach, land cress, cress and spinach beet leaves (chard).

POTATOES
REVUS can be used on all varieties of potatoes including seed potatoes.

BACKGROUND TO POTATO BLIGHT CONTROL
Late blight (Phytophthora infestans) is potentially a devastating disease of potatoes. In commercial production, a season long disease prevention policy is essential. First of all ensure that other control methods are being satisfactorily applied:

1. Prevent re-growth on potato dumps.
2. Destroy all groundkeepers.
3. Plant disease free seed.
4. Use generous soil ridges to protect tubers.
Integrate this approach with a fungicide programme :

Early Crops
In first and second early potato crops, particularly those grown in the same locality as main crop potatoes, an adequate and full blight protection programme should be applied right up to harvesting or haulm desiccation. This will protect the early crop while helping to reduce disease risk to later crops.

Maincrops
Disease prevention programmes require regular and season long fungicide use to limit foliar blight development. However, as an effective fungicide programme will preserve leaf area there may be more risk of infecting tubers at harvest, particularly during “heavy” blight years. Completion of the control programme should therefore include a complete haulm desiccant. Lifting of the crop should not take place for at least 10 days after COMPLETE KILL of the haulm. Crops intended for storage should not be lifted while there is any green tissue AT ALL on the leaves or stem bases.

Blight Risk Assessment
The risk of disease is affected by weather conditions (during the crop life) and crop location:

Weather Conditions - Spread of disease occurs under warm, humid conditions. Preferably use a reliable decision support system to determine what frequency of fungicide treatment is appropriate and fungicide type required. Note: Blight forecasting has often been based on the occurrence of “Smith periods”. A “Smith period” is a 48 hour period in which the minimum temperature is 10°C or more and the relative humidity exceeds 90% for at least 11 hours during the first 24 hours and for at least 11 hours again during the final 24 hours. However, any period of warm, humid weather increases blight risk.

Crop Location - Locations with the highest probability of blight problems are: 1. Areas of the country where extensive main crop or early production takes place e.g. East Anglia, the south west or the west. 2. Areas where climatic conditions that encourage disease development occur on a frequent basis e.g. The south west, the west and the Fens.

TIMING
REVUS is a protectant fungicide and therefore the spray programme must start BEFORE blight enters the crop. Commence spraying at the first blight warning or when local weather conditions are favourable for the disease. Intervals between applications of REVUS should be reduced as blight risk increases, so that protection of the crop can be maintained. Applications of REVUS should be made at 7-10 day intervals depending on disease pressure. As disease pressure and the risk of late blight infection increase, the interval should be shortened.

Rates of Use
Apply REVUS at 0.6 litres product per hectare. Up to four applications may be made per crop Applications of REVUS can be made up to 3 days before harvest.

RESISTANCE MANAGEMENT
Revus contains a CAA fungicide (FRAC code no. 40). It does not contain a formulated partner mixture, e.g. mancozeb, for resistant management purposes. To minimise the risk of resistance development in the pathogen population the following guidelines for CAA fungicides (based on an average number of 12 fungicide applications/season for potato blight control) should be followed:-
1 Where possible, use formulated/tank mixtures or an alternating strategy using fungicides from different mode of action groups.
2 Where CAA fungicides are applied as a mixture (co-formulated or as a tank mix) a maximum of 50% of the total number of applications may be made per crop or season. In potatoes up to six applications may be made.
3 Where CAA fungicides are applied alone (without a co-formulant or tank mix partner) a maximum of 33% of the total number of applications may be made per crop or season. In potatoes a maximum of four applications may be made.
4 No more than 3 applications of any CAA fungicide should be made consecutively 5 Further information on suitable tank mix products and resistance management strategies is available from FRAG and BPC websites.

LETTUCE, LAMB’S LETTUCE, ENDIVES (INCLUDING FRISEE, ESCAROLE AND RADICCHIO), ROCKET, RED MUSTARD, BABY LEAF CROPS, SPINACH, LAND CRESS, CRESS, PURSLANE, SPINACH BEET LEAVES (CHARD) AND HERBS

TIMING
Before applying REVUS, ensure the crop is free from any stress caused by environmental or agronomic effects. Always inspect crops to assess disease development immediately before spraying. Best results will be achieved from applications made in the earliest stage of disease development or as a protectant treatment following a disease risk assessment or the use of appropriate decision support systems. Protected crops - Only one application of REVUS should be made per crop. Outdoor crops – Two applications of REVUS can be made per crop. Allow a minimum interval of 7 days between applications. For outdoor crops and protected crops that are grown under a temporary cover, the maximum total dose must not exceed 1.2 L product/ha/year on any single area of land. Applications of REVUS can be made up to 7 days before harvest.

Rates of Use
Apply REVUS at 0.6 litres product per hectare.

RESISTANCE MANAGEMENT
To minimise the risk of resistance developing REVUS may be applied in tank mixture or alternating using a fungicide with a different mode of action at a rate that is effective against downy mildew. Further information on suitable tank mix products and resistance managment strategies is available on the FRAG website.

Use in alternation with fungicides with another mode of action.

MIXING AND SPRAYING
Apply through a conventional hydraulic sprayer calibrated to give an even application at the correct volume. Application to outdoor crops of potatoes, lettuce and associated crops should be made via a tractor mounted, trailed or self-propelled sprayer or alternatively through a knapsack sprayer. The application to indoor lettuce and associated crops should be made via a hydraulic nozzle applicator e.g. motorised sprayer with hand or boom lance or via a knapsack sprayer.

Spray Volume
Potatoes : Apply REVUS in at least 200 litres of water per hectare Lettuce and similar: Apply REVUS in 200-600 litres of water per hectare

Spray Nozzles
A medium quality spray* is preferred for application of REVUS (* as defined by The British Crop Protection Council). A spray pressure of 2 - 3 bar is recommended.

Mixing
Make sure the sprayer is clean and set to give an even application at the correct volume Fill the spray tank with half the required volume of clean water and start agitation. Add the required amount of REVUS and continue agitation whilst adding the rest of the water. Agitate the mixture thoroughly before use and continue agitation during spraying and any stoppages Thoroughly wash all spray equipment with water immediately after use Do not leave the spray liquid in the sprayer for long periods (such as during meal breaks or overnight).

COMPATIBILITY
The following products may be tank mixed with REVUS at the recommended rates of use. Potatoes Dithane NT Dry Flowable (MAPP 14704) Shirlan (MAPP 10573) Before using any tank mixture also consult and comply with the recommendations of the partner product. The products should be added separately to the bulk of water in the spray tank. Continuous agitation should be maintained and the products used immediately after mixing.

Registered for culturesRatePreharvest Interval
Potatoes0.6 l3
Lettuce0.6 l7
Chicory0.6 l7
Endive0.6 l7
Spinach0.6 l7
Cress0.6 l7