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Arboriculture Glossary of TermsThere are 1070 entries in this glossary.
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ability of a soil to maintain (i.e., resist change in) its pH.
mass of soil per unit volume. Often used as a measure of compaction.
simple hitch commonly used to attach a line to a piece of hardware.
|burl (burr, in British English)||
an abnormal swelling of a tree trunk characterized by swirling wood grain and meristematic tissue. Wood with these structures is prized for woodworking. Contrast with gall.
(1) strong, coarsely woven cloth made from fibers of jute, flax, or hemp. (2) a burlaplike fabric made of synthetic fibers. Both are used for containing soil in a root ball. See balled and burlapped.
(1) metallic tube or lining, without moving parts, to reduce friction between mechanical parts such as a pulley sheave and an axle; also the nonrotating sheave used to increase the bend radius for the sling attachment. Contrast with bearing. (2) a device, often made of rubber or plastic, to reduce vibration or wear between mechanical parts. (3) a fitting used to connect plumbing parts of different diameters (such as in spray equipment).
decay of the lower trunk, trunk flare, or buttress roots. See crown rot.
method of lowering pieces when the rigging point is below the work, traditionally without the use of a block. Contrast with blocking.
tying off a limb at the butt (larger) end for rigging.
knot that can be used to form a loop in the standing part of a line.
roots at the trunk base that help support the tree and equalize mechanical stress.
device used to tighten lags and aid in cable installation.
hardware to which a cable termination is affixed in a cabling or guying installation.
double-bolted, U-shaped clamp, sometimes used to secure tree cables. Not acceptable or approved for tree support systems in the United States.
mechanical device that grasps and holds the cable during installation.
installation of steel or synthetic cable in a tree to provide supplemental support to weak branches or crotches.
undifferentiated tissue formed by the cambium, usually as the result of wounding. Contrast with woundwood.
thin layer(s) of meristematic cells that give rise (outward) to the phloem and (inward) to the xylem, increasing stem and root diameter.
localized diseased area on stems, roots, and branches. Often shrunken and discolored.
collective branches and foliage of a tree or group of trees
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