Utah Code Ann. § 65A-8-211
(1)
(2) During the closed season it is a class B misdemeanor to set on fire, or cause to be set on fire, any flammable material on any forest, brush, range, grass, grain, stubble, or hay land without:
(4)
(6)
(a) A burning permit is not required for the burning of fence lines on cultivated lands, canals, or irrigation ditches if: