If a three-man group has its way, tractor exhaust will be widely used as fertilizer.

A device is being marketed which uses the exhaust to seed crops instead of air, meaning it ends up in the ground as well, reducing input costs.

Darrel Carlisle of Souris says demand is growing, with 50 units running in North America last year, which covered about 200,000 acres. He adds they're already gearing up for next spring, with production planned for this fall.

Carlisle notes the other partners are from Cypress River and Pincher Creek, Alberta. The idea began six years ago, using irrigation motors. They're hoping to get the federal government's attention to what Carlisle describes as an aid to environmental farm planning.

He adds soil analysis has turned up no toxins.