Helix

Manufacturer
BAYER
Category
Fungicides
Registered until
2025-01-31
Registration number
12264
Active materials
Links

A fungicide for the control of stem-base, foliar and ear diseases in winter wheat, winter rye and winter and spring barley and oats.

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.
Helix is a mixture of a triazolinthione and spiroketoalamine fungicide recommended for control of a wide range of diseases on winter and spring barley and oats, winter wheat and winter rye.
RESTRICTIONS
PROTECT FROM FROST

CROPS
Helix may be used on all commercial varieties of winter and spring barley, winter wheat, winter rye and winter and spring oats.

RATE OF USE
Apply Helix at 1.25 litre per hectare.
The maximum number of treatments per crop is 2.
There must be a 14 day interval between treatments.

APPLICATION
Water volume
Apply Helix in 100-300 litres of water per hectare. The higher spray volumes are recommended where the crop is dense or disease pressure/risk is high to ensure good penetration to the lower leaves and stem bases. Disease control may be compromised by reducing water volumes, where good spray coverage is difficult to achieve.

Pressure
A spray pressure of 2-3 bar is recommended.

Spray quality
Apply as a MEDIUM spray quality (as defined by BCPC).

Latest Permitted Timing
Winter wheat and rye before caryopsis watery ripe stage (GS 71). Winter and spring barley and oats up to beginning of flowering stage (GS 61).

Mixing
Thoroughly shake the pack before use.
Add the required quantity of Helix to the half-filled spray tank with the agitation system in operation and then fill to the required level. Continue agitation at all times during spraying and stoppages until the tank is completely empty. Spray immediately after mixing.

General
Sprayers should be thoroughly cleaned before use, and filters and jets checked for damage and blockages.
Boom height should be adjusted to ensure even coverage of the crop, particularly at later growth stages. The correct height is one at which the spray from alternate nozzles meets just above the crop, in dense crops, at later growth stages, higher water volumes should be used.
Spray equipment should be thoroughly cleaned with water and detergent after use.

DISEASES CONTROLLED
Wheat
Eyespot, Septoria leaf and glume blotch, powdery mildew, yellow rust, brown rust*, tan spot*, ear disease complex (Fusarium ear blight* and reduction of sooty moulds).
Barley
Eyespot, powdery mildew, yellow rust, brown rust, Rhynchosporium, net blotch.
Rye
Eyespot, powdery mildew, brown rust, ear disease complex (Fusarium ear blight* and reduction of sooty moulds), Rhynchosporium.
Oats
Eyespot, crown rust and mildew.
* Helix will provide moderate control of these diseases

APPLICATION TIMING
There must be a 14 day interval between treatments.
Eyespot (Oculimacula spp.)
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 Blotch and Glume Blotch (Septoria tritici and Stagonospora nodorum).
Apply before disease is established in the crop. To protect the upper leaves and ear apply Helix at full flag leaf emergence up to mid-flowering (GS 65). Where disease pressure remains high application may be repeated.
Applications to upper leaves where S. tritici symptoms are present are likely to be less effective.
Helix contains a DMI fungicide. Resistance to some DMI fungicides has been identified in Septoria leaf blotch (Mycosphaerella graminicola) which may seriously affect the performance of some products. For further advice on resistance management in DMI’s contact your agronomist or specialist advisor, and visit the FRAG-UK website.
Powdery Mildew (Blumeria graminis)
Apply Helix at the first signs of disease. Where disease pressure remains high application may be repeated.
Yellow Rust (Puccinia striiformis)
Apply Helix 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 (Puccinia hordei and P. recondita)
Apply Helix 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 Helix at the first signs of disease. Helix controls crown rust in winter and spring oats. 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-repentis)
Apply Helix at the first signs of disease in spring or early summer. Where disease pressure remains high the application may be repeated.
Ear Disease Complex
Apply Helix soon after ear emergence until the end of flowering (GS 59-69). Control of ear diseases can result in cleaner, brighter ears.
Leaf Blotch (Rhynchosporium secalis)
Apply Helix 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 Helix 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.

CAUTION: The possible development of disease strains resistant to Helix cannot be excluded or predicted. Where such resistant strains occur, Helix is unlikely to give satisfactory control.

 

Registered for culturesRate
Winter wheat1.25 l
Winter rye1.25 l
Winter barley1.25 l
Spring barley1.25 l
Winter oats1.25 l
Spring oats1.25 l