- stunted plants, yellowing (chlorosis) of lower leaves first
- chlorosis begins at leaf tip and progresses along midrib, creating a "V"

Phosphorus

- in seedlings: slow growth, purpling or reddening of leaves especially on leaf margin affects lower leaves first
- stunted overall growth, poor root development
- twisted ears, irregular kernel rows, imperfectly developed ear tips

Potassium

- chlorosis on lower leaves first, begins at the margin and progresses inward
- weak stalks
- poor drought tolerance

Calcium

- Failure of new leaves to emerge and unfold
- tips of leaves colorless and covered with a sticky gelatinous substance which causes them to adhere to one another
- deficiencies are rare in Ohio

Magnesium

- interveinal chlorosis of the leaf, veins remain green
- affects lower leaves first
- reddening of leaf margins where severe de-ficiencies exist
- deficiencies are rare in Ohio

Sulfur

- uniformly chlorotic plant
- stunted thin-stemmed and spindly
- similar to nitrogen deficiency symptoms but more pronounced on younger leaves

Manganese

- shows up in young leaves first as an interveinal chlorosis
- severe cases exhibit elongated white streaks, the center of which may turn brown and fall out

Iron

- young leaves develop interveinal chlorosis, veins remain green in early stages
- progresses rapidly and may eventually turn the entire leaf white
- deficiencies are rare in Ohio

Boron

- irregularly shaped white spots between veins which could develop into stripes with a waxy, raised appearance
- discoloration found on youngest leaves first, starting at the base of the leaf & progressing toward the tip
- may prevent tassel development

Copper

- youngest leaves become yellow and stunted, eventually turning pale while the old leaves die back
- dead leaf tissue may appear along the tips and leaf edges in a pattern similar to potassium deficiency
- deficiencies are rare in Ohio

Zinc

- light green to white streaks on either side of the midrib that may develop into a broad band of bleached tissue most evident on lower leaves
- leaf midribs and margins remain green
- sometimes stalk and leaf edges appear to be tinted red or brown

Molybdenum

- wilted leaves, youngest leaves may twist
- deficiencies are rare in Ohio