Fungicide timing: Early season disease control in spring barley is essential to protect developing tillers and reduce the potential for disease epidemics, especially in early sown crops. The greatest response to fungicides is achieved at mid-late tillering and GS39/49. These applications protect tiller survival and green leaf retention. Delaying the final application timing until GS59 can lead to a reduction in the yield potential of the crop.
Further information can be found at National Tillage Conference 2015 page 35
Disease Control – Spring Wheat
A 3 spray fungicide programme using reduced rates of mixtures is suggested.
T1 should be applied around first node stage (gs 30/31) with the growth regulator. Mildew is the main disease threat early on spring wheat but Septoria may be present also.
The T1 will be based on triazoles +/- a mildewcide. Include Chlorothalonil (e.g. Bravo) with the triazole as an anti-resistance strategy.
T2 at flag leaf (gs 37/39) will be based on triazoles + SDHI 75-80% rate. Where necessary a mildewcide should be included at about ½ rate on mildew prone varieties. Include chlorothalonil (e.g. Bravo) with the triazole as an anti-resistance strategy.
T3 will be applied at heading and is important to reduce ear diseases.
It will be based on triazoles.
Disease control – Spring Oats
Use a disease control program similar to winter oats but rates of T1 & T2 may possibly be reduced.
Spring Oats Fungicide Suggested Strategy
|T1: gs 30-31
|T2: Second Node
|T3: Flag Leaf - Heading
|CCC + Mildewcide +/-