SHARING OPTIONS: The research tackles concerns about the potential for protected urea residues to appear in milk. \Donal O' Leary A new scientific paper from Teagasc confirms that no chemical residues were found in milk produced from cows grazing grass treated with protected urea fertiliser in milk sampling trials. The research, which was conducted by Teagasc at its environment research centre in Johnstown Castle, aimed to tackle concerns about the potential for protected urea residues to appear in milk. Senior research officer in the Teagasc crops, environment and land use programme Dr Patrick Forrestal said: “Extensive trials by Teagasc over the past nine years have shown protected urea to be a solid yield performer in Irish grassland and thus a reliable fertiliser option for farmers.