Eyespot of Rice in Colombia, Panama, and Peru. Sang- Won Ahn, Plant Pathologist, Rice Program, Centro Internacional de Agricultura Tropical, Cali, Colombia. Plant Dis. 64:878-880. Copyright 1980 American Phytopathological Society. DOI: 10.1094/PD-64-878.

Drechslera gigantea was the causal agent of an eyespot disease of rice, manifested as minute, longitudinally elongated, oval-shaped spots, 1-4 mm long and 0.5–1 mm wide, with white to light straw-colored necrotic centers and narrow dark brown margins. Diagnosis was easily confirmed by the presence of cylindrical conidia measuring 166–484 × 10–29.6 µm. The disease was observed on CICA 6 in Colombia, CICA 7 in Panama, and Naylamp in Peru. This is believed to be the first report of this disease on rice.

Keyword(s): Helminthosporium giganteum, resistance to eyespot disease.