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Arboriculture Glossary of TermsThere are 1070 entries in this glossary.
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for arborist ropes, a braided rope consisting of 12 strands. Most are coreless. There are two types of 12-strand construction: a tight braid that is not easily spliceable, used for climbing and rigging lines; and a loose, easily spliceable braid, commonly used for slings.
for arborist ropes, a braided rope that has a 16-strand, load-bearing cover and a filler core that is not significant in load carrying.
for arborist ropes, a braided rope that has a 24-strand cover and is available in double-braided or kernmantle construction.
rope construction in which three strands are twisted together in a spiral pattern. Contrast with braided rope and kernmantle rope.
|7-strand, common-grade cable||
steel-cable construction in which seven strands are twisted together in a spiral pattern. Used to add supplemental structural support to trees. Terminated by wrapping onto itself.
guideline proposed by Alex Shigo that states in 90 percent of trees conflicting with utility lines, three pruning cuts can achieve 90 percent of the required clearance.
|ABC (aerial bundle cable)||
system of reducing the physical hanging space of aboveground electrical conductors.
plant malady caused by nonliving, environmental, or man-made agents.
|abscisic acid (ABA)||
plant hormone that stimulates stomatal closure and promotes seed and bud dormancy. Inhibits shoot growth but may promote root growth. Plays a role in wounding responses and in abscission of leaves and fruit.
leaf or fruit drop induced by hormonal changes.
area at the base of the petiole where cellular breakdown leads to leaf and fruit drop.
fine, fibrous roots that take up water and minerals. Most absorbing roots are within the top 12 inches (30 centimeters) of soil.
taking up. Contrast with adsorption.
rate of change of the velocity of an object. Acceleration is a vector quantity. See vector and velocity.
(1) second climbing line hung in a tree in case it is needed to reach a victim in an emergency. (2) climbing line installed in a tree to gain access to, but not used to work, the tree.
defined entrance and exit route for a property during construction, tree work, or landscape operations.
physiological adaptation process of plants and other living organisms to a climate or environment different from their native environment or where originally grown.
having a pH less than 7.0. Contrast with alkaline.
state or quality of being acid. Contrast with alkalinity. See pH.
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