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Consult processors before use on bulb onions, shallots garlic or leek for processing.

a) Following application of Invader in potatoes or leek, allow 3 months before sowing clover.

b) Following application of Invader in bulb onion, shallots or garlic allow 5 months before sowing clover.

 

Invader is a fungicide with a combination of protectant, translaminar and locally systemic activity for the control of late blight (Phytophthora infestans) in potatoes; downy mildew (Peronospora destructor) in bulb onions, shallots and garlic, and as a qualified minor use for the reduction of white tip (Phytophthora porri) in leeks. Invader will be most effective when applied as a protectant programme before disease symptoms appear, or in accordance with appropriate disease monitoring and forecasting systems following periods of high infection risk.

Invader contains a mixture of mancozeb (a dithiocarbamate fungicide) and dimethomorph (a CAA fungicide).

To minimize the risk of resistance developing, and in line with current FRAG-UK advice to use effective doses, use Invader at the recommended rate.

Invader should be used in accordance with current FRAC and FRAG-UK advice for CAA compounds, as follows:

• In potatoes, up to 6 applications of Invader may be made, making up no more than half of the total number of intended late blight sprays per season.

• In bulb onions, shallots, garlic and leek, CAA fungicide applications should not make up more than half of the total number of intended downy mildew or

white tip sprays per season.

• No more than three consecutive applications of a CAA fungicide should be made in any crop.

Invader will control strains of late blight resistant to phenylamides. No cross resistance to phenylamide resistant strains of blight have been observed.

Invader should be applied in a programme containing fungicides with different modes of action.

When fungicides with the same mode of action are used repeatedly over several years in the same field, naturally occurring less sensitive strains may survive, propagate and become dominant in that field. It is therefore advised that wherever possible spray programmes should include fungicides with differing modes of action. Invader contains active substances with two different modes of action. For further advice on resistance management for potato blight (Phytophthora infestans) contact your agronomist or specialist advisor and/or visit the FRAG-UK and Potato Council websites.

 

Invader can be used on all varieties of potato, including seed crops.

Invader should be applied as part of a repeat spray programme at 7-14 day intervals, depending on disease pressure. As disease pressure and the risk of late blight infection increases, the interval should be shortened. Irrigated crops should be treated as high risk.

Applications of Invader should begin as soon as there is a risk of blight infection, or an official blight warning has been issued. In the absence of any warnings, applications should commence before the crop meets along the rows.

Apply 2.4 kg/ha of Invader in a volume of 200-500 litres of water per h ectare.

In potatoes, Invader may be applied at 2.4 kg/ha in 150 litres of water per hectare although efficacy and crop safety at this reduced water volume has not been evaluated. Therefore application at 150 litres water per hectare is at users risk with regard to biological efficacy and crop safety.

 

For the control of downy mildew (Peronospora destructor) in bulb onions, shallots and garlic, Invader should be applied in a protectant spray programme commencing before the appearance of disease symptoms, or when local monitoring and forecasting indicates a high risk of infection.

Apply 2.5 kg/ha of Invader in a volume of 200-500 litres of water per hectare ensuring good coverage of the foliage. Repeat sprays at 7 − 14 day intervals, depending on disease pressure. A minimum of 14 days must elapse between the last spray and harvest.

 

The efficacy and crop safety of this qualified recommendation is based on limited evidence.

For the reduction of white tip (Phytophthora porri) in leeks, Invader should be applied in a protectant spray programme commencing before the appearance of disease symptoms, or when local monitoring and forecasting indicates a high risk of infection.

Apply 2.0 kg/ha of Invader in a volume of 200-500 litres of water per hectare ensuring good coverage of the foliage. Repeat sprays at 7 − 14 day intervals, depending on disease pressure. A minimum of 21 days must elapse between the last spray and harvest.

 

Invader should be applied as a MEDIUM spray, as defined by BCPC. Apply in a water volume of 200-500 litres per ha. Good coverage of the foliage is essential.

Half fill the sprayer tank with clean water and start agitation.

Steadily add the required quantity of Invader direct to the spray tank (Pre-mixing is not necessary).

Empty container thoroughly and dispose of safely.

Add the remainder of the water whilst maintaining agitation.

Apply immediately and continue agitation until spraying is complete.

Wash sprayer thoroughly immediately after use, using clean water and following best practice advice and the guidance provided by the equipment manufacturer.