Farmer Ian Turnbull convicted of murder of NSW environment officer Glen Turner

Turnbull shot Turner three times with a rifle after a long-running dispute with NSW environment department over illegal land clearing

An 81-year-old farmer farmer has been found guilty of the murder of a New South Wales environment officer he shot after a long-running dispute over land clearing.

A jury found Ian Turnbull guilty in the NSW supreme court of murdering Office of Environment and Heritage compliance officer Glen Turner, 51, at his Croppa Creek property in the state's north in July 2014.