Compiled by David L. Long (davidl@umn.edu), Plant Pathologist 

Acreage harvested and yield production records based on Crop Production Summary, Agricultural Statistics Board, USDA. Loss data are a summary of estimates made by personnel of the state Departments of Agriculture; university extension and research projects; Agricultural Research Service, USDA; and the Cereal Disease Laboratory.

Losses were calculated for each rust as follows:

Losses were indicated as a trace when the disease was present but no fields were known to have suffered significant losses. When a few fields suffered measurable losses this was reflected as a percent of the state's production. Zeros indicate the disease was not reported in that state during the season. Blanks for stripe rust indicate that the disease was not reported nor does it occur annually in that state. Trace amounts were not included in the calculation of totals and averages.

*Updated from: Roelfs, A. P 1978. Estimated Losses Caused by Rust in Small Grain Cereals in the United States - 1918-76, USDA Misc. Publ. 1363.