Customary agricultural operations, including all buildings, structures and uses appurtenant to and used in general farming, agricultural truck farming, gardening, poultry raising, tree nurseries and greenhouses, subject to the following restrictions:
(1) No building in which farm animals are kept shall be closer than 150 feet to any adjoining residential building.
(2) No storage of manure or odor or dust-producing substances shall be permitted within 150 feet from any adjoining residential building.
(3) No greenhouse heating plant shall be operated within 50 feet of any adjoining residential building.