Pathogen(s) causing disease: Aspergillus flavus, A. glaucus, A. nigerÂ
Symptoms: Aspergillus nigerÂ appears as a black mold on infected kernels.Â A. flavusÂ is a greenish-yellow mold growing on damaged kernels.Â A. glaucusÂ is a greenish mold.Â Most common at tip of ear and scattered on a few kernels on ear.
Conditions: A. flavusÂ is more common following hot, dry weather, injury by drought stress and insect damage.Â A. flavuscan produce a carcinogenic secondary metabolite known as aflatoxin. Â It can grow at temperatures higher than 90Â° F, and grain moisture content as low as 14-15 percent.Â Â
Management: In storage, controlled by drying corn to a moisture content below 15 per cent as soon after harvest as possible. In the field, avoid insect or mechanical damage to ears.