Includes forestry and logging operations, farming in all its branches, and among other things, includes cultivation and tillage of the soil, dairying, the production, cultivation, growing and harvesting of any agricultural and horticultural commodities, the raising of livestock and poultry, and any practice 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, coconut, abaca, tobacco, pineapple or other farm products.