Top environmental officials from 22 nations adjourned a conference Saturday after narrowing differences over steps to implement the treaty to combat global warming.

Agreement was near on a plan calling for companies in developed countries to help developing nations reduce their so-called greenhouse gas emissions, Canadian Environment Minister Christine Stewart and her Brazilian counterpart, Jose Israel Vargas, told reporters at the conclusion of the two-day meeting.Under an agreement reached last year by 160 nations in Kyoto, Japan, major industrial countries are required by the years 2008 to 2012 to cut greenhouse gas emissions by an average of 5.2 percent from 1990 levels.

The plan discussed is viewed by officials as a way for developing nations to reduce greenhouse gas emissions without curbing economic progress.