Septoria & The Importance of T1 Sprays
Symptoms and diagnosis of septoria
Septoria symptoms can be spotted very early in the growing season most years. Young autumn-sown wheat, water-soaked patches, which quickly turn brown and necrotic may be present by early December and throughout winter on the lower leaves. These contain visible black pycindia which are the most characteristic feature of Zymoseptoria tritici. These are particularly common on dead over-wintering leaves of winter wheat. On the mature plant, lesions are brown and sometimes restricted by veins giving a retangular appearance. The black pycnidia become more visible in the lesions as the symptoms develop. Lesions may coalesce leading to large areas of necrotic brown tissue.