Skip to main content

NC State Extension


Corn, like all feed grains is vital to the state economy because North Carolina is a net importer of feed grains due to the large poultry and pork industries. The acreage devoted to corn has declined from over 2 million acres to about 700,000 acres. The decline is largely the result of an increase in land area devoted to cotton. The diseases common in corn have changed over the past ten years as a result of changes in production practices. The shift to reduced tillage has resulted in shifts in the pathogen spectrum affecting corn. Important corn diseases include plant-parasitic nematodes and fungal diseases including gray leaf spot and occasional problems with southern rust. Mycotoxins produced by various species of fungi sometimes result in corn that cannot be marketed. The use of pesticides in North Carolina for management of diseases is infrequent.

Some additional web sites:

More information about disease in corn is available from the Plant Disease and Insect Clinic.

Disease Factsheets

Mycotoxins in corn

Southern rust in corn

Gray leaf spot in corn