General agriculture, which shall include farming, ranching, grazing, dairying, animal or plant husbandry. Not permitted, however, are:
(1)
The spreading, accumulation, feeding or use of garbage in any manner on the open surface of the land.
(2)
Animal feedlot or commercial holding pens.
(3)
A use or activity engaged in within 300 feet of a residential or retail business structure if such use or activity results in unreasonable and continuous odors, dust or noise.