Includes farming in all its branches and, among other things, includes cultivation and tillage of soil, dairying, the production, cultivation, growing and harvesting of any agricultural and horticultural commodities, the raising of livestock or poultry, and any practices performed by a farmer on a farm as an incident to or in conjunction with such farming operations, but does not include the manufacturing or processing of sugar, coconuts, abaca, tobacco, pineapples or other farm products