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Collar blast

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Symptoms of Collar blast 

 

 

1. The collar rot phase occurs due to infection at the junction of the leaf blade and sheath, resulting in development of characteristics brown to dark brown lesion.

2. Severe collar rot infection on the flag or second to last leaf often kills the entire leaf. 

 

 

 

 

 

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