The National Agricultural Fieldays is an annual national agricultural show and field day event held in mid-June at the Mystery Creek Events Centre near Hamilton, New Zealand.
It styles itself as "the biggest agricultural trade show in the southern hemisphere".
Fieldays attracts 1,000 exhibitors and over 115,000 visitors through its gates.
The event has visitor attractions such as sheepdog trials and tractor pulling contests.
Ag Week Radio, later known as Fieldays Radio, operated from the Mystery Creek site.