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R1 to R6 (discolored or dead plants (reddish or purple leaves and stalk…

- - - - Stewart' s leaf blight
      - helminathosporium leaf blight
      - Anthrancose
  - - - maize dwarf mosaic; othe virus
- - - - corn earworm
      - corn borer
      - picinic beetle
      - corn sap beetle
      - fall armyworm
- - - - corn rootworm adult
      - Grashopper
      - japnese beetle
      - wollybear caterpillar
- - - - grasshopper
      - fall aryworm