Common rust
Corn (maize)
Puccinia sorghi, or common rust of maize, is a species of rust fungus that infects corn and species from the plant genus.Puccinia sorghi often first appears after silking in maize. The first early symptom includes chlorotic specks on the leaf. The obvious sign of this plant pathogen is golden-brown pustules or bumps on the above-ground surface of the plant tissue. These bumps are urediniospores which can spread to other plants and cause further infection. They are circular and powdery, which result from spores breaking through the leaf surface. While they are only about 1-2 mm each, they are very numerous with equal frequencies on upper and lower leaf surfaces. Over time, these blister-like bumps can change from brown to black, changing from urediniospores to teliospores.
Solution
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