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2020 OMAFRA corn ear mould/DON survey results in

October 19, 2020  By Top Crop Manager

The results are in from the annual Ontario corn ear mould and deoxynivalenol (DON) mycotoxin survey.

The survey was conducted from Sept. 23 to Oct. 2 by the Ontario Ministry of Agriculture, Food and Rural Affairs (OMAFRA), in collaboration with the Grain Farmers of Ontario and members of the Ontario Agri-Business Association.

Ben Rosser, OMAFRA corn specialist, and Albert Tenuta, OMAFRA field crop pathologist, have written a summary of this year’s findings. One major take-away: of the 245 ear corn samples taken, 89 per cent of samples tested low (less than 2.00 parts per million (ppm)) for DON – in line with long-term survey averages.


As well, while insect feeding damage was lower than many past years, it was often associated with greater visual ear moulds. Several of the samples with higher DON concentrations showed damage. |READ MORE


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