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Suspension Concentrate (SC) containing 500 g/l diflufenican. Selective contact and residual herbicide in spring barley, winter wheat, winter barley, winter rye and triticale for the control of annual broad-leaved weeds.

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.
SEMPRA is a suspension concentrate formulation, which is used as a selective contact and residual herbicide in winter cereals and spring barley to control annual dicotyledons. Under favourable growing conditions, the residual activity can last for up to 8 weeks after application. The level of effective residual control may be reduced under dry conditions, when poor coverage of the soil surface is achieved, when the crop is planted in non-wetting sand or where soils have a high content of clay or organic matter.
This product is taken up by the shoots of germinating seeds and seedlings. Susceptible weeds germinate but show immediate chlorosis followed by a mauve-pink discolouration. The chlorosis spreads with the aerial growth and the plants become necrotic and die back.
After application, some transient crop discolouration may occur, which will have no effect on the subsequent growth.
SEMPRA is a selective herbicide for use pre and post-emergence up to BBCH 30 in winter wheat and winter barley; pre or post-emergence up to BBCH 14 in winter rye; post-emergence up to BBCH 30 in spring barley and pre-emergence in winter triticale.

Restrictions
Maximum number of applications: one per crop.
Do not apply when heavy rain is expected within 4 hours or on crops suffering from stress, frost, nutrient deficiency, excessively moist or dry conditions, pest or disease attack or pre-emergence applications.
Do not apply when heavy rain is expected within 4 hours or on crops suffering from stress, frost, nutrient deficiency, excessively moist or dry conditions, pest or disease attack or pre-emergence applications.
Do not use on other cereals, broadcast or undersown crops or crops to be undersown.
Do not apply to soils with more than 10% organic matter.
Use on Sands (soil texture [85] system) or very stony or gravely soils may result in crop damage.
Do not harrow after application nor roll autumn-treated crops until spring.
Avoid drift onto neighbouring crops.
Avoid overlapping spray bouts.

Crop specific information
Winter cereals (winter wheat, winter barley, rye, and triticale).

Pre-emergence application (winter wheat, winter barley, winter rye and triticale).
SEMPRA should be applied shortly after sowing. Seed beds should be fine and firm and should not contain clods greater than fist size. For optimal efficiency, it is advised to apply under moist conditions at or after application and rainfall during the first weeks after application.
On weak plants, a colouring of the first leaf can occur. This will have no impact on yield. Drill crop to normal depth (25 mm) and ensure seed well covered.
Only the following named varieties of rye and triticale may be treated: Winter rye: ‘Amino’, ‘Ashill Pearl’, ‘Dominant’, ‘Lovaszpatonai’, ‘Rheidol’, ‘Tetragorzow’.
Triticale: ‘Aquarius’, ‘Bokolo’, ‘Clercal’, ‘Newton’, ‘Salvo’, Torrs’
Dose: 0.25 litre/ha.

Post-emergence application
In winter wheat and winter barley the application can be made from emergence until end of tillering.
For winter rye application can be made from emergence up to the 4 true leaf stage.
Dose: 0.25 litre/ha

Spring barley
Apply from mid of tillering until the end of tillering.
Dose: 0.125 litre/ha

Following crops
In the event of crop failure, winter wheat may be redrilled immediately after normal cultivation and winter barley may be sown after ploughing. Fields must be ploughed to a depth of 15 cm and 20 weeks must elapse before sowing spring crops of wheat, barley, oilseed rape, peas, field beans, sugar beet, potatoes, carrots, edible brassicas or onions. After normal harvest autumn cereals can be drilled after ploughing. Thorough mixing of the soil must take place before drilling field beans, leaf brassicae or winter oilseed rape. For sugar beet seed crops and winter onions complete inversion of the furrow slice is essential. Successive treatments of any products containing diflufenican can lead to soil build-up and inversion ploughing must precede sowing and following non-cereal crop. Even where ploughing occurs some crops e.g. onion, leek, other allium crops and clover may be damaged. As a precaution, users who rent out their land to growers should not use diflufenican containing products in successive years before renting out the land.

Mixing and spraying
Before spraying ensure the sprayer is clean and in good working order. Half fill the sprayer with clean water and begin to agitate. Add the required quantity of SEMPRA and complete filling. Continue to agitate during spraying.
Apply in 200-300 litres/ha water as a medium spray (BCPC category). Increase the water volume where weed infestation is heavy or the crop cover is dense. Complete coverage of weeds is essential.
Wash out the sprayer thoroughly after use using a recognised tank cleaner or wetting agent.