Dendrology -Study and identification of trees. Delay time-See machine time, scheduled operating time. . Delimbing gate -Metal grid used with a skidder for removing limbs. Depletion allowance -Deduction from taxable income derived from a wasting asset. Diameter at ground line -Diameter measure of a standing tree at the estimated cutting height.
Diameter classes -Classification of trees based on diameter outside bark measured at d.b.h.
Diameter inside bark -Diameter measurement of a standing tree or log in which the estimated or actual thickness of the bark is discounted. Diameter limit - A natural harvesting treatment in which all trees over a specified diameter may by cut. Diameter outside bark -Measurement of tree diameter in which the bark is included. Diameter tape -Tape measure specially graduated so that diameter may be read directly when the tape is placed around a tree stem or log. Dibbles are most commonly used in the South but are also used in other areas for planting containerized seedlings.