Aspergillus flavus and other fungi associated with insect damaged field corn
1975
Fennell, D.I. | Lillehoj, E.B. | Kwolek, W.F.
White and yellow ear corn collected from fields in Missouri and Illinois was examined for damage by corn borers, earworms, mites, stinkbugs, and sap beetles and for the presence of these insects. Kernels selected from insect-damaged and insect-free ears were examined for fungi. The combined incidence of Asp. flavus on damaged and undamaged corn varied from 0 to 10.6% depending on the area surveyed; average incidence was 5.2%. A 6.3% incidence of Asp. flavus on kernels from ears having insect damage differed significantly from the 2.5% incidence on kernels from undamaged ears. Fusarium, Rhizopus, and Syncephalastrum also were observed more frequently on kernels from insect-damaged ears. Similar distributions of fungal genera were observed on kernels from ears damaged by earworms and corn borers and by mites and stinkbugs. Asp. flavus was isolated from 15% of 195 insects collected from freshly harvested ears. The fungus was associated with a significantly higher proportion of earworms (37%) than corn borers (14%).
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