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Spatial Patterns of Fusarium Head Blight in New York Wheat Fields Suggest Role of Airborne Inoculum

E. M. Del Ponte, D. A. Shah, and G. C. Bergstrom

April 2003

Research

The spatial pattern of Fusarium head blight (FHB) was studied in winter wheat fields in New York over 3 years. Incidence of FHB was randomly distributed among 60 sampling areas in 64 of the 70 fields. The lack of aggregation and low incidences of FHB suggests that weathered corn debris contributed relatively little within-field inoculum for FHB. Based on these patterns, disease in rotational wheat fields of NY appears to be initiated primarily by deposition of spores from diffuse atmospheric populations of G. zeae.

doi:10.1094/PHP-2003-0418-01-RS

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