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Symptoms of Neck blast

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Symptoms of Neck blast :

1.The neck blast also called as neck rot or rotten neck.

2.The neck rot or rotten neck blast phase is caused by infection of the neck node by the fungus Pyricularia oryzae. 

3.Rotten neck symptoms appear at the base of the panicle starting at the node.

4.The infected tissue turns dark brown to black and shrivel causing the stem to break.

5.Panicles usually turn straw colored and are either completely or partially blacked . Often they break and the heads fall to the ground. 

6.Panicle branches and glumes may also be infected, spikelets is filled, turn greyish.

7. Infections resulting in neck rot or rotten neck blast and panicle blast are the most injurious resulting in severe yield loss.

 

File Courtesy: 
Rice Blast Disease and its Management ( Dr. Krishnaveni)
Photo Courtesy: 
Rice Blast Disease and its Management ( Dr . Krishnaveni)
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