A U.S. propane industry group is touting the concept of injecting steam into soil to kill weed seeds, but other research shows difficulties in heating soil to a high enough temperature to kill weed seeds with a mobile implement.

Two application methods highlight efficacy rates and cost differences
Bill C-234 next headed to Senate
Manitoba MP's private member's bill clears Senate
Governing Liberals telegraph plans to introduce their own measure
Superior Propane expects supply shortages soon