About Lesson
Causative Agent: Xanthomonas oryzae pv. Oryzicola
Symptom:
- Occurring in some areas during very wet seasons and where high rates of nitrogen fertilizer are used.
- It causes narrow, dark-greenish, water-soaked, interveinal streaks of various lengths, initially restricted to the leaf blades.
- The lesions enlarge, turn yellowish-orange to brown (depending on cultivar), and eventually coalesce.
- BLS is not a systemic disease. its affect only parenchymatus tissue.
- Bacterial leaf streak may be confused with narrow brown spot.
- To conform leaf streak lesions are usually thinner than those of narrow brown spot
- narrow brown spot lesions are not translucent, nor do they produce bacterial ooze.
Join the conversation