ICAR Research Institute for Groundnut Research in India. The Directorate of Groundnut Research (DGR) came in to being as the first crop commodity research unit under the category of NRC's (National Research Centres) of the ICAR. It was established in 1979 to give a fillip to research for enhancing productivity of groundnut in keeping with its importance among the oilseed crops of India. The National Research Centre on Groundnut (NRCG) was elevated to the level of a Directorate in the year 2009 and rechristened as the Directorate of Groundnut Research (ICAR-DGR).