The Commission also cut its estimate on the 2013 growth to 2%, from 3.1% initially.
Agriculture output is estimated to decline 15% on the year in 2012, the Commission said in its autumn report. Exports are expected to fall 2.4% year-on-year, while imports are seen down 1.3%.
On the other hand, constructions are likely to grow at an annualized rate of 2.4%, while industry and services are predicted to advance 0.5% and 1.7%, respectively.
Romanian authorities expect economic growth will slow to around 1% in 2012, from 2.5% a year earlier, hurt by a feeble harvest and falling exports to European markets.
In the first nine month, the gross domestic product expanded by a meager 0.2% year-on-year.