The following property is exempt from taxation: class 2 property that is agricultural machinery and equipment and exclusively used in agriculture during the immediately preceding tax year. For purposes of this section:
(1)  "Agricultural machinery and equipment" shall mean any machinery and equipment that is used in:
(a)  Production or harvest of field crops including, but not limited to, grains, feed crops, fruits and vegetables, or the production of or caring for nursery stock as defined in section 22-2302, Idaho Code; or
(b)  The grazing, feeding or raising of livestock, fur-bearing animals, fish, fowl and bees, or harvest of their production, to be sold or used as part of a net profit-making agricultural enterprise or dairy.

Terms Used In Idaho Code 63-602EE

(2)  "Harvest" shall include all activities necessary for a raw agricultural commodity to be put into its most basic salable form and shall also include on-farm storage of the commodity before it is first handled in the primary channels of trade.
(3)  Buildings shall not be considered to be agricultural machinery and equipment.
(4)  The provisions of this section shall be broadly interpreted in favor of granting the exemption.