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Arboriculture Glossary of TermsThere are 1070 entries in this glossary.
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|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.
group of soil bacteria resembling fungi. Actinomycetes play a role in the decomposition of organic matter and the release of mineral elements.
pertaining to carabiners and snaps, the number of distinct motions for the gate to be opened. A nonlocking carabiner is single action, requiring one movement for the gate to be opened.
term describing leaves that taper sharply at their tip (apex).
disorder or disease that occurs suddenly or over a short period of time. Contrast with chronic.
genetic ability of plants and other living organisms to adjust or acclimate to different environments.
adjustable rigging sling used to balance limbs in rigging operations.
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