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Last Modified: 04-Oct-2010
Copyright © 2004, University of Kentucky, College of Agriculture, Department of Plant Pathology
       

Plant: Millet, German or Foxtail (Setaria italica) (Paniceae) Back to List
Disease/Disorder: Gray leaf spot
Causal agent: Pyricularia grisea (fungus)
Signs: An olive-gray fungal growth can be seen in the middle of the spots. This is the production of conidiophores and conidia.
Symptoms: elliptical spots with tan center and darker margin
Total image number: 4

       
 
       
                     
  Plant: Reed canarygrass (Phalaris arundinacea) (Poaceae) Back to List
Disease/Disorder: Zonate leaf spot
Causal agent: Drechslera gigantea (fungus)
Signs: Conidiophores and conidia can be seen within spots. Micrographs show stained portions of end cells and/or stained germ tubes.
Symptoms: Tan round to lens-shaped spots with brown border.
Total image number: 11		      
   
       
                     
 

Plant: Alfalfa (Medicago sativa) (Fabaceae) Back to List
Disease/Disorder: Summer black stem/leaf spot
Causal agent: Cercospora medicaginis (fungus)
Signs: Dark conidiophores and silvery conidia can be seen within spots.
Symptoms: Leaf spots with brown center and darker border.
Total image number: 14


       
                     
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