Causative agent : (Xanthomonas  oryzae pv. Oryzae)  

Symptoms

Two phages a) wilting of plants (kresek phage )    b) leaf blight phage

1. Wilting phage

• Occurs during seedling stage, 3-4 weeks after transplanting roll up. As disease progress the leaf turns yellow to straw color and wilts leading whole seedling to dry up and die.
• Sometime confused to early rice stem borer damage.
• To distinguish kresek symptoms from stem borer, squeeze the lower end of infected seedling between finger.
• Kresek symptoms show yellowish bacterial ooze coming out from cut end and not pull easily from soil.

2. Leaf blight phage

• On older leaf, water soaked to yellow orange stripes are +nt on leaf blade, leaf tip or mechanical injured parts of plant.
• Lesion are wavy margin and progress towards the leaf base.
• On young lesion bacterial ooze resembling a dew .
• Bacterial ooze later dries up and become a yellow to black beads