Pacific Pests, Pathogens and Weeds - Online edition

Pacific Pests, Pathogens & Weeds

Sorghum streaky spot (073)

Click/tap on images to enlarge

  • Worldwide distribution. On sorghum, millet and Johnson grass. Relatively minor importance.
  • Reddish-brown, somewhat rectangular spots (streaks) up to 3 mm wide and 15 mm long on the lower leaves, moving progressively upwards. Streaks merge in wet weather, causing a blight. Large blotches occur on leaf bases and stems.
  • Cultural control: avoid planting successive crops on the same land; use 'clean' seed, i.e., from healthy crops; collect trash and burn after harvest.
  • Chemical control: none recommended.

Common Name

Sorghum streaky spot, bacterial leaf streak

Scientific Name

Xanthomonas vasicola pv. holcicola; previously, Xanthomonas campestris pv. holcicola.

AUTHORS Helen Tsatsia & Grahame Jackson
Information from CABI (2015) Xanthomonas vasicola pv. holcicola (streaky spot of sorghum and Sudan grass). Crop Protection Compendium. (

Produced with support from the Australian Centre for International Agricultural Research under project PC/2010/090: Strengthening integrated crop management research in the Pacific Islands in support of sustainable intensification of high-value crop production, implemented by the University of Queensland and the Secretariat of the Pacific Community.

Copyright © 2021. All rights reserved.