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Emergence to Knee-High (Yellow-white areas in leaf (Necrotic stripes…
Emergence to Knee-High
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Plants irregularly shaped, broken, or wilted
Leaves rolled, plants wilted
Drought stress, Root feeding insects: corn root aphid, grape colaspic, white grub, corn root worm, mechanical injury to root nematodes
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leaves tightly rolled, not wilted
Herbicide injury: 2,4-D, Dicamba, Chloroacetamide herbicide
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Leaves appear water-soaked, to grayish becoming necrotic
Ammonia injury, frost, paraquat injury
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Plants suddenly wilt and die, or cut off at ground level
Insect damage: wireworm, black cutworm, cultivator injury
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Plants discolored
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Lower leaves dead, tips dying on upper leaves
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Leaves purplish or reddish, especially at tips
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Plant tissue removed
Leaf margins damaged
Yellow-striped army worm, army worm, fall army worm
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Large holes in leaves
Variegated cutworm, sod webworm, common stalk borer, slugs
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Windowpane effect, Leaf skeletonizing
Insect damage: Southern corn root worm (adult), cereal leaf beetle, grape collapses, redhead flea beetle
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