Ontario farmers say it is threatening an already-difficult harvest, especially corn.
Propane deliveries are needed for corn dryers and corn needs to move smoothly out of terminals to make space for incoming loads as the harvest progresses.
In Western Canada, heavy snows have made it impossible to finish late harvesting. The farmers there are also anxious to move grain to export so they can get paid.
The oil industry is also pressuring CN Rail, and if not them, the federal government, to end the strike so shipments to Gulf-port refineries can resume.
CN Rail accounts for about 60 per cent of the crude oil exported from Alberta and Saskatchewan.