Septoria tritici blotch (Zymoseptoria tritici) in wheat - a comparison of early control methods

To determine if grazing alone can reduce Septoria tritici blotch (STB) disease pressure.To determine how long flutriafol, applied to the fertiliser, can control STB into the season.To assess the efficacy of the preliminary SDHI seed treatment to control STB.To assess whether the effectiveness of early control with grazing or seed treatments is improved with a foliar application of the foliar fungicide Opera (pryaclostrobin and epoxiconazole) at GS39 (flag leaf emergence).