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Arboriculture Glossary of TermsThere are 1070 entries in this glossary.
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lag-threaded cable anchor with a closed eye.
|lag hook (J-hook)||
lag-threaded cable anchor with an open eye (J-shaped).
cable anchor or bracing rod with a coarse thread pattern that is typically screwed into a pre-drilled hole that is smaller in diameter than the anchor or rod. Contrast with machine-threaded.
predetermined area where cut branches or wood sections will be dropped or lowered from a tree. See drop zone.
purpose or intended use of a plant in the landscape (e.g., shade, aesthetics, screening).
short rope equipped with carabiners, snaps, and/or eye splices. Work-positioning lanyards are used for temporarily securing a climber in one place.
immature life stage of an insect between the egg and the pupa stage.
bud held in dormancy for more than one year by hormones originating from the terminal bud. Term sometimes used to refer to dormant buds or adventitious buds.
secondary or subordinate branch or root.
vegetative bud on the side of a stem. Contrast with terminal bud.
root that arises by cell division in the pericycle of the parent root and then penetrates the cortex and epidermis.
portion of an annual ring (growth ring) that forms during summer, characterized by small-diameter cells with thick walls. Summer wood. Contrast with earlywood.
(1) tendency for elements or compounds to wash down through the soil. (2) tendency for elements or compounds to wash into the soil. For example, alkaline compounds may leach from concrete, or heavy metals may leach from aggregates, and both may damage plants.
part of a rigging line, from the rigging point to the load. Contrast with fall.
primary terminal shoot or trunk of a tree. Large, usually upright stem. A stem that dominates a portion of the crown by suppressing lateral branches.
primary, photosynthetic organ of a plant that is connected to a stem by a petiole.
tip of the leaf blade.
bottom part of the leaf blade.
irregularly shaped areas of disease on plant foliage.
outer edge of the leaf blade.
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