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Causal Organism and Symptoms of Sheath Brown Rot

 Causal Organism of Sheath Brown Rot

  • Causal organism for Sheath brown rot is caused by Pseudomonas fuscovaginae Miyajima

Symptoms  of  Sheath Brown Rot

1. Symptoms appearing at seedling and later stages include discoloration and rotting of sheath. 

2. After tran


Sheath Brown Rot - Introduction, Distribution and Occurance

Introduction to Sheath Brown Rot

  • Precise information regarding the loss caused by the Sheath brown rot disease is lacking, but it is known that appreciable losses have occurred in tropical and temperate parts of South America.
  • The causal organism for Sheath brown rot is Pseudomonas fuscovaginae.
  • Sheath brown rot symptoms appearing at seedling and later stages include discoloration and rotting of sheath.
  • Bacterial sheath brown rot is now wide

Pecky Rice

Pecky Rice (Kernel Spotting)

  • Pecky rice is also called as kernel spotting.

Distribution and occurrence of Pecky Rice

  • Single or several florets in the panicle develop brown to reddish-brown spots; grain discolored due to feeding of stink bugs and fungal growth.

Causal Organism of Pecky Rice

Many fungi cause damages

  • Cochliobolus miyabeanus

Grain Rot - Economic Importance, Causal Organism and Symptoms

Economic importance of Grain Rot

There is no exact estimate of losses caused, by this disease but 900,000 ha of rice in North Kyushu Island (Japan) have been infected by the disease.

Causal organism of Grain Rot

The Grain rot disease is caused by Burkholderia glumae.

Symptoms of Grain Rot

1. Bacterial grain rot symptoms appear on seedlings and spikelets.

2. Seedlings raised


Bacterial Leaf Streak - Introduction and Economic Importance

Bacterial Leaf Streak


1. Bacterial Leaf Streak of Rice disease is usually observed during the tillering stage of the rice crop.

2. If the Bacterial Leaf Streak appeared in the later growth stages, the rice plant can easily recover and grain yield losses are minimized.

3. The disease is not reported to occur in temperate countries including Japan. The disease infection reduces the 1000 grain weight to the tune of 32.

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