Aspergillus ear rot
Area of impact: Ear
Description: Patches of green or yellow spores on or between kernels most commonly found at the tip of the ear. Spores can darken as the fungus ages.
Pathogen involved: Aspergillus flavus (a fungus)
Timing/Conditions: Occurs mid- to late season during hot dry weather
Contributing factors: Insect damage to ears and plant stress; Overwinters in plant debris and soil and is transmitted by insects or wind.
Management practices: Reduce plant stress through irrigation or tillage, control insects and adjust planting times.