AR'BORICUL'TURE (Lat. arbor, tree + cultura, care, cultivation). A term referring to the scientific cultivation of trees. It embraces that part of horticulture which treats of the planting and cultivation of ornamental and fruit trees, and that part of forestry known as sylviculture. The horticultural growing of various trees is discussed under the corresponding special headings. Forest practices are described under Forestry.