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Septoria Tritici Blotch Fact Sheet: Managing Septoria tritici blotch disease in wheat

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Changes in Septoria tritici blotch resistance to fungicides have been detected in the southern grain growing region, especially where wheat is sown into wheat stubble... Two gene mutations in STB detected by NSW Department of Primary Industries indicate resistance to some fungicides (see Case Study)... Currently none of the products with an azole/strobilurin combination in Australia used on wheat are registered for use on STB...