Glume blotch
released at high relative humidity (RH). The optimum temperature for germination of the conidia is between 20 and 25 °C. The ascospores are responsible for [...] blotch, which presents itself as brown, elongated lesions with a light halo on leaves, stems and glumes. In the centre of the lesions, light-coloured translucent [...] germinating seedlings are infected, they shrivel. Life cycle and appearance of Glume blotch Phaeosphaeria nodorum or Septoria nodorum survives as perithecia containing