Patna: The food grain production in the state has registered sustained growth. The Economic Survey 2019-20, based on the achievements made in the 2018-19, noted that the potential of the primary sector (agriculture) needed to be tapped to give a boost to the rural economy and thereby, through it to the state’s economy itself.  The Economic Survey report tabled in both the Houses of State legislature on Monday, has noted that food grain (rice, wheat, maize and pulses) production in the state stood at 163.12 lakh tonnes in 2018-19.