KYIV, Dec 20 - Ukraine's government agreed Wednesday to extend ban on imports of certain commodities from Russia through the end of 2018, Prime Minister Volodymyr Groysman said.

The government also decided to include on the list of embargoed goods ammonium sulphate, mixtures of ammonium nitrate and calcium carbonate or other non-organic substances that are not fertilizers, polyethylene with specific thickness of 0.94 or more, and polyvinylchloride unmixed with other substances. The changes will take effect on March 1, 2018.