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    • Botrytis Leaf Blight 

      Lorbeer, J.W.; Andaloro, J.T. (New York State IPM Program, 1983)
      Botrytis leaf blight (BLB) is a fungal disease that occurs in many of the onion growing areas of the world. The causal organism, Botrytis squamosa, causes leaf spots (lesions) and maceration of leaf tissue resulting in ...