1. Fusarium crown rot (foot rot) Caused by Fusarium spp. –Same fungus that causes scab Hosts include wheat, barley, oats, corn, grasses

2. Fusarium crown rot history Ubiquitous; probably present in the original prairie soil infecting native grassesUbiquitous; probably present in the original prairie soil infecting native grasses Early 1900s H.L. Bolley “wheat-sick soil”Early 1900s H.L. Bolley “wheat-sick soil” –Campaign across ND to use good seed and practice rotation –Posters in store windows

4. Yield loss from Fusarium crown rot Long-term annual estimates of yield loss in Saskatchewan and Manitoba –5-6% spring wheat –11% barley North Dakota estimates were similar, 9.5% yield loss for durham

5. Fusarium crown rot trials Huntley, 2005 Yield (bu/a) % Yield Variety w/o Fusariumw/ Fusarium reduction Alsen59.752.811.5 Choteau55.042.822.1 Explorer48.643.89.8 Hank58.247.618.3** Knudson59.547.120.8 McNeal51.245.810.2 MTO24564.549.722.4 NorPro56.644.621.0 Outlook61.553.413.1 Reeder57.945.221.7 ** An outlier was removed. If included, % yield reduction would be 11.7%

6. Fusarium crown rot trials Huntley, 2005 Durham wheat Yield (bu/a) % Yield Variety w/o Fusariumw/ Fusarium reduction AC Avonlea53.440.225 Ben49.437.424 Kyle32.327.316 Lebsock53.140.424 Maier51.438.525 Monroe54.745.517 Mountrail46.738.218 Utopia45.441.68 Vic47.237.121 Ward52.839.725 ** An outlier was removed. If included, % yield reduction would be 11.7%

7. Future: Fusarium crown rot control Seed treatment Late seeding Don’t over-fertilize Crop rotation to non-host: DON’T PLANT CORN!!! Plant tolerant varieties

8. Fusarium crown rot (foot rot) Caused by Fusarium spp. –Same fungi that cause scab F. graminearum, F. culmorum, F. pseudograminearum Hosts include wheat, barley, oats, corn, grasses Residue-borne Seed-borne Stress