(2) In the employ of the owner or tenant or other operator of a farm, in connection with the operation, management, conservation, improvement or maintenance of such farm and its tools and equipment, or in salvaging timber or clearing land of brush and other debris left by a hurricane, if the major part of such service is performed on a farm;

(3) In connection with the production or harvesting of any commodity defined as an agricultural commodity in section 15(g) of the Agricultural Marketing Act, as amended, 12 U.S.C. 1141J, or in connection with the ginning of cotton, or agricultural composting as defined in Title 17, section 2805 or in connection with the operation or maintenance of ditches, canals, reservoirs or waterways, not owned or operated for profit, used exclusively for supplying and storing water for farming purposes;

(4) In the employ of the operator of a farm, in handling, planting, drying, packing, packaging, processing, freezing, grading, storing or delivering to storage or to market or to a carrier for transportation to market, in its unmanufactured state, any agricultural or horticultural commodity; but only if such operator produced more than 1/2 of the commodity with respect to which such service is performed; in the employ of a group of operators of farms, or a cooperative organization of which such operators are members, in the performance of service described in this subparagraph, but only if such operators produced more than 1/2 of the commodity with respect to which such service is performed. The provisions of this subparagraph shall do not be deemed to be applicable apply with respect to service performed in connection with commercial canning or commercial freezing or in connection with any agricultural or horticultural commodity after its delivery to a terminal market for consumption; hatching or processing of poultry, transportation of poultry; grading of eggs or packing of eggs, transportation of eggs; the processing of any meat product or the transportation of any meat product; or to any potato packing business which that customarily operates during a regularly recurring