Monday Mycotoxin & Crop Report for November 27, 2023

November 27, 2023

Welcome to Neogen®’s Monday Mycotoxin 2023 Crop Report, our analysis of mycotoxin occurrence, relevant weather, crop conditions, and crop progress during the 2023 growing and harvest season.

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U.S. Harvest Highlight

  1. Warm, dry conditions prevalent in much of the U.S.

  2. Sparse showers on the West & Gulf coasts.

  3. Corn harvest nears completion.

Weather & Harvest Updates

The USDA’s November 21 bulletin reports sparse precipitation occurred on the edges of the country, with West coast states experiencing scattered showers and receiving totals of around 2 inches. Showers in the Gulf coast states and parts of the Ohio Valley averaged from 2 to 4 inches while parts of Florida saw up to 10 inches of rainfall from a non-tropical storm system. The interior of the nation experienced another week of mild, dry weather that helped to bring the harvest season near completion. From the intermountain West to the Great Plains and Great Lakes, temperatures were reported as much as 10 degrees above average.


Winter wheat planting and development continues.

95% of winter wheat acres are planted, one point below the five-year average.

87% of winter wheat acres have emerged, two points above the five-year average.

Corn harvest nears completion.

93% of corn is harvested, 2 points above the five-year average.

Mycotoxin Reports

Aflatoxin in corn

  • KS: 10–20 ppb
  • AL: 20–50 ppb

Deoxynivalenol (DON) in wheat

  • KS and NE: 1–3 ppm
  • Ontario and Quebec: 3–5 ppm

Deoxynivalenol (DON) in corn

  • AL, KS, NE, and TN: 1–3 ppm
  • MI: 3–5 ppm

Fumonisin in corn

  • AL, KS, MO, NE, and TN: 5–10 ppm

Zearalenone in corn

  • MI: 500–1000 ppb

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Category: Science Insights, Milling & Grain, Mycotoxins

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