Some corn harvested in Ontario this year has concentrations of toxins from moulds that are elevated to levels that are too high to be used in animal feed. This could lead to questions about what can be done with this corn, either prior to or after processing. Land application is a possibility.
The following rules apply to corn or corn by-products that have been processed or aggregated so that the resulting material includes corn from more than one farmer. These materials can be land applied as a Category 1 NASM.
These materials can be land applied for their nutrient value, but they do have the potential to be odourous. Land application would be subject to the following limitations:
Category 1 NASM can be land applied at a rate of up to 20 wet tonnes per hectare (8.9 tons per acre) without analyzing the material or the soil.
Caution should be exercised at the higher end of this range, as the high protein content of the distillers grains could lead to excess nitrogen applications.
Application rates of greater than 20 wet tonnes per hectare are possible, but both the soil and the material (i.e. distiller’s grains) must be analyzed for nutrients and metals, and the application rate would be limited by the ability of the crop to utilize the nutrients applied.
The following minimum application setbacks from wells must be maintained when applying the material:
The following minimum application setbacks from surface water must be maintained when applying the material:
The following minimum application setbacks from neighbours must be maintained when applying the material:
Category 1 NASM can be stored in a permanent nutrient storage facility that was built after June 30, 2003 in accordance with the Nutrient Management regulations.
Solid Category 1 NASM can be stored in a temporary field nutrient storage site. If temporary field storage is required, refer to Ontario Regulation 267/03, Sections 82 - 86 for the detailed site requirements and management options.
Read the field crop news article to get information on options for corn from individual farmers.