The Donegal TD, who was previously Fianna Fáil's Agriculture Spokesperson, succeeds Dara Calleary, who resigned over last month's Oireachtas golf society dinner controversy.
He's the third person to hold the position since the government was formed at the end of June.
Wexford TD James Browne will succeed Deputy McConalogue as Minister of State at the Department of Justice.
Taoiseach Michéal Martin nominated the new Agriculture Minister in the Dáil this afternoon.
Wicklow Faces Ongoing Flood Risks Despite Improvement in Weather Conditions
Wicklow Coastal Areas Best Avoided During Status Orange Alert
*UPDATE* Wicklow Orange Rain Warning Change As Flood Risk Remains High
Wicklow Flood Relief: Support Available for Businesses and Community Groups
UPDATE: Ban On Scrambler Bikes In Public Spaces Agreed By Cabinet