Privest

DIRECTIONS FOR USE

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

Product Information

Privest is a protectant fungicide for use preventatively and in the early stages of foliar late blight (Phytophthora infestans) in potatoes.

Disease Control

Privest provides protection against the early stages of foliar late blight in potatoes.
A full programme of correctly timed sprays using other authorised fungicides is likely to be required for longer-term control, particularly where disease pressure is high.

Disease Susceptibility

Privest is most effective when applied as a protectant spray before the risk of late blight in potatoes. It gives effective protection against phenylamide-resistant strains of late blight.

Resistance Management

GROUP 45 P 07 FUNGICIDES
Privest contains ametoctradin (a FRAC group 45 QoSI fungicide) and potassium phosphates (a FRAC group P07 host plant defense inducer).

To minimize the risk of resistance, always use Privest at the recommended rate of 3.2 L/ha.
No more than 3 consecutive applications of Privest and no more than a total of 3 applications per season should be applied.
Do not exceed 6 applications of QoSI fungicides in total, comprising no more than half of the intended late blight sprays per season.
When mixing with a fungicide of a different mode of action, no more than 4 applications of any product containing ametoctradin, and no more than 3 consecutively, should be made.

For further advice on resistance management, consult your agronomist or specialist advisor and/or visit the FRAG-UK and Potato Council websites.

Crop-Specific Information

Potatoes
Privest can be used on all varieties of potatoes, including seed crops.

Time of Application

Privest should be applied as part of a repeat spray programme at 5-10 day intervals, depending on disease pressure.
As disease pressure increases, the interval should be shortened. Irrigated crops should be treated as high risk.
Applications should begin when there is a risk of blight infection or an official blight warning has been issued. If no warning is available, applications should commence before the crop meets along the rows.

Application can be made from first basal side shoot until 7 days before harvest.

Rate of Application

Apply 3.2 L/ha of Privest in 200-500 L/ha of water.

Following Crops

A minimum of 5 weeks must elapse between the last application and planting of a following crop.
In the event of crop failure, a minimum of 5 weeks must elapse between the last application and replanting.

Mixing and Application

Mixing:

Never prepare more spray solution than is required.
Fill the tank three-quarters full with clean water and start agitation.
Invert the container several times before opening to ensure thorough mixing of the product.
Add the required quantity of Privest to the spray tank while re-circulating.
Add the remainder of the water and continue agitation until spraying is complete.

When using tank mixes, take note of any specific instructions regarding the order of mixing.
All tank mixes should be used immediately after mixing.
Rinse the container thoroughly using an integrated pressure rinsing device or manually rinse three times. Add the washings to the tank during filling, and dispose of the container safely.

Application:

Apply as a medium spray, as defined by BCPC.
Apply in 200-500 L/ha of water, selecting the appropriate water volume for the density of the crop to ensure good coverage of the foliage and stems.

Sprayer Cleaning

Wash the sprayer thoroughly immediately after use, using a double rinse procedure with clean water. Follow the sprayer cleaning guidance provided by the equipment manufacturer.