Oculimacula yallundae

eyespot

Cercosporella herpotrichoides, Helgardia herpotrichoides, Pseudocercosporella herpotrichoides, Pseudocercosporella herpotrichoides var. herpotrichoides, Ramulispora herpotrichoides, Tapesia yallundae, Tapesia yallundae var. yallundae

Africa: Ethiopia, Morocco, South Africa, Tanzania, Tunisia; Asia: China, Japan; Europe: Austria, Belarus, Belgium, Bulgaria, Czechia, Denmark, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Netherlands, Norway, Poland, Romania, Russia, Serbia, Slovakia, Sweden, Switzerland, Ukraine, UK; North America: Canada, USA; Oceania: Australia, New Zealand; South America: Chile.

ID, NY, OR, WA

2024-09-06

fungus

Korea

Main: oats; Other: wheat, rye, barley.

PSDCHE

Korea lists this pathogen as Pseudocercosporella herpotrichoides. O. yallundae can overwinter on cereal stubble but some grasses and weeds also act as sources of inoculum. Infection occurs from conidia that are splashed short distances by rain droplets.