Abstract Leaf blotch diseases (LBD), such as Septoria nodorum bloch ( Parastagnospora ), tritici Zymoseptoria ) and Tan spot Pyrenophora tritici-repentis can cause severe yield losses (up to 50%) in Norwegian spring wheat Triticum aestivum are mainly controlled by fungicide applications. A forecasting model predict disease risk be an important tool optimize control. The association between spec...

Abstract Wheat ( Triticum aestivum L.) yields are commonly affected by foliar infection fungal pathogens. Of these, three wheat leaf blotch diseases, septoria nodorum (SNB), tan spot (TS) and tritici (STB), caused Parastagonospora Pn ), Pyrenophora tritici-repentis Ptr ) Zymoseptoria Zt respectively, induce major yield losses. Infection results in necrotic areas on the leaf, it is often difficu...