Bacterial Diseases of Sorghum

Bacterial Stripe (bacterium - Pseudomonas andropogoni): This is the most common bacterial disease of sorghum. The disease is characterized by long narrow stripes that vary from red to black depending on the type of sorghum. These stripes are confined between the veins and may have a crusty surface when the bacterial slime dries on the surface. This disease has not been a serious enough problem to warrant specific control in Texas.

Bacterial Streak (bacterium - Xanthomonas holcicola): Streak first appears as dark-green watersoaked tissue between veins that later turns brown with red margins. Control measures have not been warranted.

Bacterial Spot (bacterium - Pseudomonas syringae): Spots first appear as watersoaked, green areas on lower leaves before infection spreads to upper leaves. Spots later turn tan with reddish borders. Small lesions are often red throughout. Control measures are not usually necessary.


April, 1996