Septoria tritici

Causal organism - Septoria tritici (Mycosphaerella graminicola)

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Wheat - close up of single leaf showing S.tritici infection Wheat - close up of 2 leaves showing severe S.tritici lesions - pycnidia obvious Wheat - close up of 3 leaves showing early symptoms due to S.tritici Wheat - canopy at GS59 with lower leaves affected by S.tritici Wheat - 3 leaves showing S.tritici lesions plus associated necrosis (secondary spread)
Wheat - leaves showing range of symptoms due to S.tritici