Sponsored: Bayer
Brown rust found in winter wheat
It's wet on land. Wheat has a hard time with that. Fortunately, the winter conditions are not too bad. So far, few frost days have been recorded.
How is the disease development under these circumstances? Lots of septoria, as to be expected. But diseases that are more difficult to grasp, such as snow mold, will also be able to benefit from the conditions. Yellow rust survives winter conditions quite easily and has therefore been found in sensitive varieties. But brown rust?
Last week, on a beautiful plot of winter wheat in West Babant, we found brown rust. That is special, because this disease usually only develops with heat, later in the season. It is not for nothing that the proverb 'Mit Frost, kein (Braun)rost' is known in Germany. Apparently conditions have been so mild this winter that even brown rust has been able to establish itself.
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A beautiful plot of early sown winter wheat (Benchmark variety) in Fijnaart, West Brabant.
Brown rust is already abundantly present on this plot on 23 January.
There is also a lot of sporulating septoria on the old leaf.
This plot above was sown on October 13, 2017. The Benchmark variety has a resistance rating of 6 against brown rust on the CSAR Variety List. At the same time, this variety has high ratios (105 to 107) in terms of grain yield with disease control. As for most varieties, optimal disease control is very important for a good yield.
That is why our advice: closely monitor the development of diseases with the arrival of spring. A T0 spraying or an early T1 may soon prove to be very necessary.
Bayer has the right candidates available for this:
- T0: Alternil 0,7 liters per hectare against septoria (including multi-site resistance management).
- T1: Aviator Xpro or Skyway Xpro 0,75 liters per hectare against the full spectrum of diseases.
In the spring we will start our national disease monitoring in time to support the advice in winter wheat
