Mycotoxin Survey in US corn: January 2019 update

  • 95% of samples were positive for at least one mycotoxin, vs 91% in 2017
  • 68% of samples had more than one mycotoxin, vs 44% in 2017
  • Aflatoxin prevalence has jumped to 9% vs 3% in 2017, with average contamination levels increasing over 8-fold
  • Deoxynivalenol (vomitoxin) prevalence has decreased to 73% vs 78% in 2017, with average contamination level increasing by 28%
  • Fumonisin prevalence has increased to 70% vs 45% in 2017, with average contamination levels increasing by 57%
  • Zearalenone prevalence has increased to 47% vs 32% in 2017, with average contamination level increasing by 29%

These contamination levels present MEDIUM to HIGH risk for all livestock and poultry species. Overall, producers in the Midwest should be on the lookout for the impacts from deoxynivalenol and zearalenone, while Southern states should be vigilant regarding fumonisin and aflatoxin contamination.