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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.
Olbran is a triazolinthione fungicide recommended for control of a wide range of diseases on winter and spring barley, winter and spring wheat, durum wheat, triticale, winter rye, winter and spring oats and for disease control in winter oilseed rape.

Eyespot (Oculimacula spp.)
Olbran reduces the incidence and severity of Eyespot. Spray in the spring at the first sign of disease, from when the leaf sheaths begin to become erect until the 2nd node is detectable (GS 30-32).

Septoria Leaf Spot and Glume Blotch (Mycosphaerella graminicola and Stagonospora nodorum)
Apply before disease is established in the crop. To protect the upper leaves and ear apply
Olbran at full flag leaf emergence (GS 37) up to mid-flowering (GS 65). Where disease pressure remains high application may be repeated. Control levels may be enhanced by using robust rates of application.
Applications to upper leaves where S. tritici symptoms are present are likely to be less effective.

Powdery Mildew (Blumeria graminis)
Apply Olbran at the first signs of disease. Where disease pressure remains high application may be repeated.

Yellow Rust (Puccinia striiformis)
Apply Olbran at the first signs of disease. A second application may be made 2-3 weeks later if re-infection occurs. Applications made to established infections are likely to be less effective.

Brown Rust
Apply Olbran at the first signs of disease. A second application may be made 2-3 weeks later if re-infection occurs. Applications made to established infections are likely to be less effective.

Crown Rust (Puccinia coronata)
Apply Olbran at the first signs of disease. A second application may be made 2-3 weeks later if re-infection occurs. Applications made to established infections are likely to be less effective.

Tan Spot (Pyrenophora tritici-repensis)
Apply Olbran at the first signs of disease in spring or early summer. Where disease pressure remains high application may be repeated.
Ear Disease Complex (Fusarium Ear Blight and Sooty Moulds)
Apply Olbran soon after ear emergence until the end of flowering (GS 59-69). Control of ear diseases can result in cleaner, brighter ears.
Through the reduction of ear blight, Olbran effectively reduces the level of the Fusarium mycotoxin deoxynivalenol (DON) in wheat grain. However, where Fusarium levels are high, the reduction achieved may not always be sufficient to ensure that DON levels fall below the statutory limit.

Leaf Blotch (Rhynchosporium secalis)
Apply Olbran in spring at the first signs of disease. For severe infections a second application may be necessary 2-3 weeks later.

Net Blotch (Pyrenophora teres)
Apply Olbran at the first signs of disease in spring/early summer. For severe infections, a second application 2-3 weeks later will give most effective control when conditions remain favourable for disease development.

RESISTANCE STRATEGY

Repeated application of Olbran alone should not be used on the same crop against a high risk pathogen such as cereal powdery mildew. Tank mixtures or alternation with fungicides having a different mode of action (e.g. morpholines) have been shown to protect against the development of resistant forms of disease.
Take all precautionary measures to reduce the selection pressure for insensitive Septoria tritici strains (e.g. tankmix with product having a different mode of action which is active against Septoria.). Consult your adviser for up to date guidance regarding current resistance status and a strategy for preventing and managing resistance in the cereal and oilseed rape pathogens listed on the label.
The Fungicide Resistance Action Committee (FRAC) produces recommendations that may be consulted for additional information.
Strains of Light Leaf Spot resistant to azole fungicides are known to exist. To avoid development of resistance apply product protectively in response to disease forecasts.
Where possible, when Light Leaf Spot is present, avoid the use of azole based fungicides when targeting other diseases such as Sclerotinia at mid flowering.
CAUTION: The possible development of disease strains resistant to Olbran cannot be excluded or predicted. Where such resistant strains occur, Olbran is unlikely to give satisfactory control.