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Disease Watch 2016 1st Edition

Arable Fungicides Disease Watch Bayer

Welcome to Disease watch, a season long programme designed to keep you informed and ready to tackle diseases invading arable farms around the country.

22 September 2016 - Spring is coming and so is disease

Welcome to the first edition of Disease watch, a season long programme designed to keep you informed and ready to tackle diseases invading arable farms around the country.

Wheat

Arable Fungicides Disease Watch Bayer

Wherever the Bayer team is looking at the moment Septoria leaf blotch can be found. This wheat crop at the Aorangi Research Station near Fielding Lower North Island, currently at GS32, is showing significant infection with Septoria leaf blotch (SLB). GS32 is an important time when considering disease control programmes as this growth stage normally coincides with final leaf three emerging.

In situations such as this, adopting a three spray programme utilising Aviator Xpro at GS32 and GS39 followed by Proline + a strobilurin fungicide at GS60-69 will provide excellent control of SLB as well as late infections of leaf rust.

Click here to see the recommended Bayer spray programme for wheat.

Arable Fungicides Disease Watch Bayer

Arable Fungicides Disease Watch Bayer
Low disease pressure - high yield potential with fungicides
As always the Bayer team is finding paddocks which aren’t showing obvious signs of disease at the moment. While it is natural to hope they will stay this way, from a management point of view it doesn’t really matter!

What do we mean by this? Well, in 2015, Bayer conducted three trials in Canterbury, all of which had very low levels of disease and yet all three delivered a profitable yield ($40-200/ha) with a robust, three spray fungicide programme. Click here to find out more about the non-fungicidal physiological benefits of applying fungicides.
Arable Fungicides Disease Watch Bayer

Barley

Arable Fungicides Disease Watch Bayer
At this time of year Scald, and to a lesser extent, net blotch are the diseases you would expect to find, along with isolated cases of leaf rust, when you walk your barley paddocks and that is exactly what the Bayer team is finding. Almost without exception crops are infected with scald. Net blotch is also being found and so is leaf rust.

The best approach to control scald is to apply an application of Delaro once your crops reach GS31-32. This should then be followed up 3 - 4 weeks later at GS37-45 with an application of Aviator Xpro.

The Bayer recommended spray programme is available to view here.
Arable Fungicides Disease Watch Bayer

Should you have any questions, feedback or if you have a photo you'd like to submit, please get in touch with me directly or contact your local Bayer Crop Science representative. For information regarding Bayer fungicides, please contact your local agrochemical supplier, or your local Bayer Crop Science representative.