Symptoms: Foliar lesions (1-2 × 2-5 mm) are straw colored with brown margins. Lesions are often dark brown at first and then become light brown. Blighting often occurs on leaf tips and margins.
Pathogen and disease characteristics: Pigmented conidia are quite variable but approximately 200 × 8 µm, straight or slightly curved, and rostrate shaped. There are 6 to 16 septa. Terminal septa are particularly dark and thickened. A distinct hilum forms on the basal cell.
Host range: Pearl millet, maize, sorghum, Setaria italica (L.) Beauv., Eleusine coracana Garten.
Geographic distribution: India, United States.
Nomenclature discrepancies: Synonyms: Drechslera rostrata, Exserohilum rostrata (Drechs.) Shoem., Helminthosporium rostratum Drechs.
Seed transmission: Can be isolated from seed (table 4). Seedling infection from contaminated seed has not been demonstrated.
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Original posting: June 5, 1999.