Source : Webster's Revised Unabridged Dictionary (1913)

Arboriculture \Ar`bor*i*cul"ture\ (?; 135), n. [L. arbor tree +
   cultura. See {Culture}.]
   The cultivation of trees and shrubs, chiefly for timber or
   for ornamental purposes.

Source : WordNet®

arboriculture
     n : the cultivation of tree for the production of timber [syn: {tree
         farming}]