Corbel

An emulsifiable concentrate containing 750 g/litre (79.5% w/w) fenpropimorph. A fungicide for use on winter and spring wheat, winter and spring barley, winter and spring oats, rye and triticale.

DIRECTIONS FOR USE

Corbel is a systemic fungicide with protectant and curative properties for the control of powdery mildew on winter and spring sown wheat, barley, oats and rye: brown rust on winter and spring sown wheat, barley and triticale; yellow rust on winter and spring sown wheat, barley and triticale; moderate levels of Rhynchosporium on winter and spring sown barley.

Restrictions/Warnings

Avoid spray drift onto neighbouring crops.

Whilst it is not recommended that Corbel be applied if rain is imminent, tests have indicated that Corbel applied alone is rainfast on cereals 2 hours after application. Thus, should rain fall after this period there is little risk of the spray being washed off.

Wash equipment thoroughly after use.

Corbel may be applied to winter and spring wheat and winter and spring barley undersown with clover and/or grasses. Some leaf spotting in clover may occur.

Allow an interval of at least 5 weeks between the last application and harvest.

Apply Corbel at the start of disease attack.

Some tank mixtures may form a slight scum and the spray tank should therefore be cleaned immediately after use.

All tank mixes should be used immediately after mixing.

There is a possibility of transient crop scorch, particularly if crops are under stress. Therefore, avoid spraying during cold frosty weather or in high temperatures.

CONSULT PROCESSORS BEFORE USE

Disease Control

Apply Corbel at the start of disease attack.

Crops

WINTER AND SPRING WHEAT

Disease:Mildew

Rate:0.75 l/ha

Disease:Brown Rust

Rate: 1l/ha

Disease:Yellow Rust

Rate: 1l/ha

WINTER AND SPRING BARLEY

Disease:Mildew

Rate:0.75 l/ha

Disease:Brown Rust

Rate: 0.75 l/ha

Disease:Yellow Rust

Rate:1l/ha

Disease:Rhynchosporium

Rate:1l/ha

WINTER AND SPRING OATS

Disease:Mildew

Rate:1l/ha

WINTER AND SPRING RYE

Disease:Mildew

Rate:1l/ha

WINTER AND SPRING TRITICALE

Disease:Brown Rust

Rate:1l/ha

Disease:Yellow Rus

Rate:1l/ha

Time of Application

Apply Corbel at the start of disease attack. This is particularly important if aggressive diseases such as yellow or brown rust are prevalent and weather conditions and/or crop varieties are favourable for their development.

Where yellow rust remains very active in these situations, a follow-up treatment may be needed to maintain control.

Corbel may be applied in the autumn if required. Further treatment in the spring/summer will almost certainly be necessary.

Allow an interval of at least 5 weeks between the last application and harvest.

(* The recommendation on oats and rye is for mildew control. The recommendation on triticale is for yellow and brown rust control).

Rate of Application

Apply Corbel in 220–450 litres of water per hectare at a dose according to the disease, as given in the table below. Use the higher water volume where the crop is dense.

Where more than one disease occurs, use the highest dose indicated for that combination.

A total of 3 litres Corbel per hectare may be applied to any one winter cereal crop. This may be applied in four separate doses of 0.75 litre per hectare, if necessary. Where four applications at 0.75 litre per hectare or three at 1 litre are made, one must be in the autumn.

A total of 2 litres Corbel per hectare may be applied to any one spring cereal crop.

These doses apply when using Corbel alone. For combined treatments with other fungicides,

Application with Folicur; Genie or Sanction for quicker clean-up of established mildew in Wheat and Barley

When applying one of the above-named products for the control of diseases such as net blotch of barley or Septoria spp. of wheat, add 0.5 litres Corbel per hectare to the recommended rate to provide a quicker clean-up of established mildew infection than the use of these products alone. Apply this tank mix as soon as practicable after the start of disease attack. A rate of 0.75 litres Corbel per hectare may be used in these mixes where, due to a combination of climate, area and cultivar, mildew pressure is expected to be particularly high. Notes: There is a possibility of transient crop scorch from the above mixtures, particularly if crops are under stress. Therefore, avoid spraying during cold frosty weather or in high temperatures.

Application with prochloraz (450g/l formulation) – Barley

Corbel may be applied at 0.75 litres per hectare in tank mix with prochloraz on barley as the second fungicide treatment for protection against late infections. If mildew and/or rust are beginning to establish (3% or more mildew on any upper leaf, any rust at all on the upper leaves) and are likely to develop further, or in any situation where due to a combination of climate, area and variety, etc., expected mildew/rust pressure is likely to be high, necessitating a longer period of protection, use the normal 1 litre per hectare application rate of Corbel in this mix.

Late leaf and ear disease control in Winter Wheat

Between the flag leaf just visible stage and the ear just completely emerged stage, Corbel may be applied with Bravo 500 for combined mildew, brown rust, yellow rust and Septoria control in winter wheat, as below.

Moderate disease risk: CORBEL 0.75 L+ BRAVO 500 1.5 L

Increased mildew/ rust risk:Increase rate of Corbel in the mix to 1 L/ha

Increased Septoria risk**:

Increased mildew/rust and Septoria risk: Increase rates of both Corbel and Bravo 500 in the mix as above

Mixing and Spraying

Half fill the spray tank with clean water and start the agitation. Pour in the required amount of Corbel. Add the remainder of the water and continue agitation until spraying is completed.

When tank mixes are to be used, Corbel should be added to the spray tank water

after the other products(s), except in tank mix with Terpal.

Apply as a MEDIUM spray as defined by BCPC.

Registered for cultures	Rate	Preharvest Interval
Winter wheat	1 l	35
Winter oats	0.75 l	35
Winter rye	0.75 l	35
Spring barley	1 l	35
Winter triticale	0.75 l	35
Spring triticale	0.75 l	35
Spring rye	0.75 l	35
Spring oats	1 l	35
Spring wheat	1 l	35
Winter barley	1 l	35

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