Missouri reports mycotoxins in corn

One additional U.S. state has reported mycotoxins in its corn crop, according to Neogen’s Monday Mycotoxin Report from September 11.

Photo by Terrence O'Keefe
Photo by Terrence O'Keefe

One additional U.S. state has reported mycotoxins in its corn crop, according to Neogen’s Monday Mycotoxin Report from September 11.

The new confirmed report of fumonisin in corn came from Missouri. This is in addition to the previous reports of fumonisin in corn in Oklahoma and Texas. Texas also has previously reported deoxynivalenol (DON) and T-2 toxin in its corn crop.

Development, conditions worsen

Ninety-two percent of corn has reached the dough stage, which is two points behind the five-year average. Sixty percent of corn has reached the dented stage, which is eight points behind the five-year average. Twelve percent of corn is in the mature stage, six points behind the five-year average.

Illinois has now dropped more than 10 points behind its five-year average, joining Colorado, Pennsylvania, Minnesota, North Dakota, South Dakota and Wisconsin.

The amount of corn in poor to very poor condition increased to 13 percent from last week’s 12 percent. This is up six points from 2016. Sixty-one percent of corn is in good to excellent condition, which is down one point from last week and down 13 points from 2016.

Colorado and Ohio are added to the previously reported list of South Dakota, North Dakota, Indiana, Kansas, Illinois, Nebraska, Michigan, Iowa and Wisconsin reporting corn in the double digits for poor to very poor condition.

‘Big three’ risks for mycotoxins

Neogen warns that “additional late-season rains may promote more fumonisin development after this dry summer. The volatile weather patterns put crops under stress and magnifies potential mycotoxin growth.”

The big three risks for mycotoxin development, according to Neogen, are:

  • Aflatoxin in drought areas
  • Fumonisin from excessive rains
  • Early frost to immature corn for DON
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