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Recommendations for T1

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  • Effective and flexible Septoria control at T1
  • Built in resistance management with >75% azole dose and multisite compatibility
  • Good control of yellow rust, mildew, eyespot and fusarium inoculum
  • Superior Leafshield formulation gives the best spread ability and drying time – Aviator is rainfast in minutes

Septoria tritici

  • A treatment of chlorothalonil at T0 will reduce inoculum spreading onto leaf 3
  • Look at the varietal resistance ratings, those rated >6.5 and drilled later may not need an SDHI at T1
  • Consider the drilling date, early drilled crops will be at higher risk than their varietal resistance rating indicates
  • Ensure that you have the correct sprayer capacity to match the allotted approach, Proline275 + CTL can work well but only if timed perfectly.
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Yellow Rust

  • Plan T0 applications no earlier than four weeks before the estimated T1 timing.
  • Pay attention to the varietal resistance ratings, these will provide a good indication of risk, however new races appear with increasing frequency so monitor all varieties
  • Most fungicides will provide good control of yellow rust, however timing is critical. If sprays are delayed and yellow rust is visible on the leaf then the addition of a strobilurin for quick knock down may be necessary.
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Mildew

  • Later drilled crops going through rapid spring growth can be at particular risk
  • High seed rates and nutrient rich soils are more at risk, as dense crop canopies and high concentrations of nitrogen will encourage mildew to proliferate
  • Azole choice at T1 will greatly influence control, with prothioconazole being the only azole with good activity
  • 1 L/ha of Aviator contains an 80% dose of PTZ and will provide excellent protection.
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Eyespot

  • If it has been cold and wet in the build up to T1, the risk may be high - eyespot favours cold, wet soils with high concentrations of nitrogen
  • Look at the varietal ratings, generally resistance in the current recommended list is low. Some of the varieties more resistant to foliar disease have a weakness on eyespot
  • Azole choice at T1 can have a significant impact on eyespot – 150g/ha of prothioconazole will provide good control.
  • 1 L/ha Aviator contains and 80% dose of PTZ and bixafen, both of which are active on eyespot.
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Fusarium & Microdochium

  • An appropriate seed treatment such as Redigo Pro can help reduce foot rot infections in the autumn
  • The disease will proliferate in the build up to T1 in warm dry conditions. Control at T1 and T2 can help ensure less inoculum to infect the ear at T3
  • Using prothioconazole at T1 will help reduce infection and inoculum.
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Identification and Management of wheat diseases

Find out more information on the key disease threats to your wheat crop. For each disease you will find out the importance of the disease in terms of potential yield penalty, how to identify the disease in its early stages and our advice on the best control strategies.

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