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FORMULATION & ACTIVE INGREDIENT: AMPHORE PLUS is a suspension concentrate containing 250 g/l mandipropamid and 250 g/l difenoconazole

TARGETS: For the control of Foliar blight (Phytophthora infestans) and moderate control of Early blight (Alternaria solani, Alternaria alternata) in potatoes.
WATER VOLUME AND BCPC SPRAY QUALITY: Apply AMPHORE PLUS in 200-600 litres of water per hectare. A medium quality spray* is preferred for application of AMPHORE PLUS (* as defined by The British Crop Protection Council). A spray pressure of 2-3 bar is recommended.

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. Avoid spraying within 5 m of the field boundary to reduce effects on non-target insects or other arthropods. These buffer distances should be measured from the field boundary, which for the purposes of this labelling is defined as from the edge of non-cropped land (ie land taken permanently out of agricultural production, including the 1-2 m strips adjacent to hedgerows and watercourses established under the Single Payment Scheme). Cropped land includes managed buffer strips (eg grass strips, wild flower margins and conservation headlands), but since these are usually set up as havens for wildlife it is best practice to minimise spray drift onto them. AMPHORE PLUS can be used on all varieties of potatoes including seed potatoes.

 

PROPERTIES AMPHORE PLUS
AMPHORE PLUS is a foliar fungicide for the preventative moderate control of Early blight (Alternaria solani, Alternaria alternata) and control of Late blight (Phythophthora infestans) in potatoes and is highly active against spore germination. Uptake into the leaf tissue assures good translaminar activity and inhibits mycelial growth during the incubation period.

COMPANY ADVISORY INFORMATION
As part of our Product Stewardship policy, Syngenta UK Limited recommends the following precautions should also be observed:
Wear appropriate clothing – cotton overall and rubber gloves, when handling the concentrate.
Since the occurrence of resistance cannot be forecast, neither Syngenta UK Limited nor its distributors can accept responsibility for any loss or damage to crops caused by the failure of AMPHORE PLUS to control resistant strains.

DISEASES CONTROLLED
For the control of Foliar blight (Phytophthora infestans) and moderate control of Early blight (Alternaria solani, Alternaria alternata) in potatoes.

 

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.

 

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.

 

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

 

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 blightrisk.

 

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

The difenoconazole component of AMPHORE PLUS provides moderate activity against Alternaria spp. that cause Early blight. Primary infection can come into crops early in the rapid canopy growth phase. AMPHORE PLUS provides early protection against this and reduces the risk of secondary infection  and disease progression later on when conditions become morefavourable.

 

AMPHORE PLUS 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. Alternaria spray applications are best timed before visual symptoms are seen or at the very earliest signs of infection.

Intervals between applications of AMPHORE PLUS should be reduced as blight risk increases, so that

protection of the crop can be maintained.

Applications of AMPHORE PLUS 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.

Apply AMPHORE PLUS at 0.6 litres product per hectare. Up to three applications may be made per crop.

Applications of AMPHORE PLUS can be made up to 3 days before harvest.

 

MIXING AND SPRAYING
Spray volume: Apply AMPHORE PLUS in 200-600 litres of water per hectare.

Spray nozzles: A medium quality spray* is preferred for application of AMPHORE PLUS (* 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 AMPHORE PLUS and continue agitation whilst adding the rest of the water.
Agitate the mixture thoroughly before use and continue agitation during spraying and any stoppages.