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SUMMARY OF INFORMATION

FORMULATION AND ACTIVE INGREDIENT: TOPREX is a suspension concentrate containing 125 g/l (11.3% w/w) paclobutrazol and 250 g/l (22.5% w/w) difenoconazole
PCS NUMBER: 05206.
PACK SIZE: 5 litres.
TARGETS: A plant growth regulator and fungicide with contact and systemic activity against Phoma leaf spot and Light leaf spot (Pyrenopeziza brassicae) in winter oilseed rape
WATER VOLUME AND SPRAY QUALITY:
Apply TOPREX to winter oilseed rape in 200 litres water per hectare.
Apply as a MEDIUM quality spray as defined by BCPC.
A spray pressure of 2-3 bars is preferred.
OTHER SPECIFIC RESTRICTIONS: To be used when both disease control and plant growth regulation are required.
RAINFASTNESS: 1 hour
FOR USE ONLY AS: AN AGRICULTURAL FUNGICIDE/PGR

PROPERTIES OF TOPREX
TOPREX is a suspension concentrate containing 125 g/l paclobutrazol and 250 g/l difenoconazole.
TOPREX contains a plant growth regulator (paclobutrazol) for crop height reduction and lodging control and fungicide (difenoconazole) with contact and systemic activity against Phoma leaf spot and Light leaf spot (Pyrenopeziza brassicae) in winter oilseed rape.

DISEASES CONTROLLED
TOPREX controls moderate infections of Phoma leaf spot and Light leaf spot (Pyrenopeziza brassicae) in winter oilseed rape.
Inspect crops to assess disease development prior to spraying. Apply when disease thresholds have been reached according to appropriate disease support systems.

CROP SPECIFIC INFORMATION
Winter Oilseed Rape
Phoma Leaf Spot
Apply to actively growing crops. Stem canker present as a result of autumn infection will not be controlled.
Light Leaf Spot (Pyrenopeziza brassicae)
Apply in early spring from the onset of stem extension, depending on disease pressure.

TIMING
Disease control considerations
Apply in spring to actively growing crops with a large canopy where disease thresholds are reached and monitoring systems indicate a risk of disease development.
Plant growth regulation considerations
Apply in spring from early stem extension to green bud to shorten the crop, reduce lodging and protect yield. In spring, plant growth regulation is not appropriate in backward crops where the crop GAI (Green Area Index) is under 1.0 in March or 2.0 in April (see HGCA Topic Sheet No. 82; Managing forward crops of oilseed rape).
Avoid use of TOPREX in cold conditions, when the crop is not growing, as plant growth regulation may be reduced.
Avoid spray drift to adjacent crops and other non-target plants.

MIXING AND SPRAYING
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 TOPREX and continue agitation whilst adding the rest of the water.
Immediately after use, clean the spray equipment thoroughly. Drain the system completely and rinse spray tank, boom and nozzles two to three times with clean water until the foam and all traces of the formulation have been removed.
Spray Volume
Apply TOPREX to winter oilseed rape in 200 litres of water per hectare.
Spraying
Apply as a MEDIUM quality spray as defined by BCPC. A spray pressure of 2-3 bars is preferred.
Following Crops
In normal rotations, only cereals may be sown after TOPREX treated winter oilseed rape. In the case of crop failure following TOPREX treatment, cereals may be used as the replacement crop, as long as 1 month has elapsed since the last TOPREX application. Broad-leaved crops (including winter oilseed rape) should not be sown for at least 16 months* after the last TOPREX treatment.