The World Ploughing Championships is also taking place during the Ratheniska event.
Exhibitors will be back at the National Ploughing Championships this month, for the first time in three years.
The competition has been taking place throughout the pandemic behind closed doors.
100,000 people are expected to go each day to Ratheniska in Laois from September 20th to the 22nd.
The World Ploughing Championships is also taking place during those days.
Organiser Anna-Marie McHugh says the international competitors have already started to arrive in Ireland:
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