Zinc deficiency — Maize

Symptoms

Characteristic symptom: Broad white or yellow bands on either side of the midrib Symptoms commonly appear within about two weeks after seedling emergence. The youngest leaves are affected first, while older leaves may remain green. Broad white or yellow bands develop on both sides of the midrib, beginning near the base of the leaf. The midrib and outer leaf margins generally remain green. The bands are most prominent on the basal half of the leaf, rather than extending uniformly along its entire length. Internode elongation is restricted, causing the upper leaves to become crowded and form a fan-shaped appearance. Severe deficiency can cause pale grey, dead tissue, delayed silk emergence and abnormal tassel development.