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Emergence to Knee-High (Yellow-White areas in leaf (Plant mostly white…
Emergence to Knee-High
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Plants irregularly shaped, broken or wilted
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Leaves appear water-soaked, to grayish becoming necrotic
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Leaves rolled, plants wilted
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Root feeding insects
Corn root aphid 
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Leaves tightly rolled, not wilted
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Plants suddenly wilt and die, or cut off at ground level
Wire worm
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Black cutworm
Plants discolored
Pale green color
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Nitrogen deficiency
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Lower leaves dead, tips dying on upper leaves
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Chinch bug
Leaves purplish or reddish, especially at tips
Root insects
white grub
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Wireworm
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Plant tissue removed
Windowpane effect, leaf skeletonizing
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Cereal Leaf Beetle
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Plant tissue removed
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Leaf margins Damaged
Armyworm
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Large holes in leaves
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Variegated cutworm
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