Horticultural crops :: Vegetables:: Radish 
       
         
        
          
            |  Alternaria Blight: Alternaria raphani
              
               Symptoms 
              
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The pathogen affects leaves, stem, pods and seeds. 
                 
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Symptoms of the disease first appear on the leaves of seed stem in the form of small, yellowish, slightly raised lesions. 
                 
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Lesions appear later on the stems and seed pods. 
                 
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Infection spreads rapidly during rainy weather, and the entire pod may be so infected that the styler end becomes black and shrivelled. 
                 
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The fungus penetrates in pod tissues, ultimately infecting the seeds. The infected seed fails to germinate. 
                 
               
Management 
             
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