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Emergence to Knee High (V7) (Yellow-White areas in leaf (Whitish or…
Emergence to Knee High (V7)
Plants irregularly shaped, broken, or wilted
Plants Twisted off, or broken
high acetimide herbicide rates
cultivator damage
Thiocarbamate herbicide injury
insecticide injury
Leaves appear water-soakes, to grayish becoming necrotic
Frost
Paraquat Injury
Ammonia Injury
Leaves Rolled, plants wilted
Root Feeding insects
Grape colaspis
White Grub
corn root aphid
Garden Symphylan
corn rootworm
Mechanical injury
Drought Stess
Nematodes
Leaves tightly rolled, not wilted
Herbicide injury
2,4-d Dicamba
Chloroacetamide herbicide
Plants suddenly wilt and die, or cut off at ground level
insect damage
Wireworm
black cutworm
Cultivator injury
Small area of dead plants
Plants Missing
Problem at or near planting
Dead Plants Present
Lightening
Cultivator injury
Plants discolored and stunted
Leaves yellow; plants weak and stunted
Nitrogen, sulfur deficiency
Purple or red discoloration of leaves, especially margins; stunting of roots
Dinitroaniline herbicide injury
dicamba herbicide injury
Imidazolinone or sulfonylurea herbicide injury
Phosphorus deficiency
Dull grey areas on upper leaves, often where leaf bends
Frost or intense sunlight
Plant tissue removed
Leaf Margins Damaged
Yellow-striped armyworm
armyworm
fall armyworm
Rows of holes across leaves
Wireworm
cutworm
armyworm
billbug
Large Holes in Leaves
sod Bedworm
common stalk borer
Variegated cutworm
slugs
Shredding or tearing of leaves
Wind, hail damage
Plants Discolored
Lower Leaves Dead, Tips Dying on upper Leaves
Fertilizer injury
Chinch Bug
Pale Green Color
Glyphosate drift injury
Nitrogen Defficiency
Waterlogged soils
Leaf Edges Yellow or Dead
Potassium deficiency
Leaves Purplish or reddish, especially at tips
Dinitroaniline herbicide injury
Glyphosate drift injury
wind damage
cold soils
Root insects
white grub
garden symphylan
grape colaspis
wireworm
Nematodes
Phosphorus Deficiency
Windowpane effect, leaf skeletonizing
insect damage
Grape colaspis
Redheaded flea beetle
Cereal leaf Beetle
Palestriped flea beetle
Southern corn rootworm adult
Yellow-White areas in leaf
necrotic stripes between veins
Stewarts leaf blight
whitish striping along veins
Sulfur deficiency
only on occasional plants
Physiological injury
broad white areas in center toward base of leaves, stunting, failure of internodes to elongate
Zinc Deficiency
Whitish or yellowish striping between leaf veins
Nutrient Deficiency
iron
Manganese
Magnesium
Boron
Low ph
Narrow whitish scratches in leaf surface only
corn flea beetles
Plant mostly white
Isoxaflutole, mesotrione, clamazone drift or carryover
Genetic Mutation
Leaves appear sandblasted or speckled, tips sandblasted
wind damage
thrips
Scattered Spots of Dead or Poorly Growing Plants
Uneven Growth
Poor Growing Conditions
Uneven Drainage
Ammonia Injury
Dead Or Stunted
White Grub
Wireworm
Garden Symphylan
Stewarts Leaf Blight
Ammonia Injury
Cultivator Injury
Nematodes
Glyphosate Drift Injury
