OTTAWA - Canada is set to commit its largest cash infusion yet to battle the landmine scourge in Afghanistan.

Sources say International Development Minister Bev Oda will outline a major funding boost Monday that's expected to be worth at least $50 million.

A federal source tells The Canadian Press it will be the biggest announcement ever made against mine action, and it will only be for Afghanistan.

Monday also marks the 10th anniversary of the Mine Ban Treaty, also known as the Ottawa Convention, that abolishes anti-personnel landmines.

Afghanistan signed on to the treaty on Sept. 11, 2002.

The war-ravaged country reported last year that almost 66,000 stockpiled mines had been destroyed and that the pace of demining has accelerated since 2005.

Canada has been a leading mine-action funder, spending $20.5 million since 2005. Another $5 million was committed to UN programs last January.