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Arboriculture Glossary of Terms
There are 1070 entries in this glossary.
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| Term | Definition |
|---|---|
| emergency response |
predetermined set of procedures by which emergency situations are assessed and handled.
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| endline loop |
loop created in the end of a rope by forming any of numerous knots.
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| endomycorrhizae |
type of mycorrhizae that grow within root cells. See mycorrhizae. Contrast with ectomycorrhizae.
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| energized conductor |
electrical conductor through which electrical current is flowing and is thus energized. This may be intended and expected or the unintended and unexpected result of an electrical short.
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| energy |
potential to do work.
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| engineered fill |
material used as a construction base that is different from the surrounding soil profile and has a known compaction rate or load-bearing capacity.
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| English) |
mineral fertilizer, not coming from plant or animal sources. Contrast with organic fertilizer.
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| entire |
term describing a leaf margin without teeth.
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| epicormic shoot |
shoot arising from a latent or adventitious bud (growth point).
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| epidermis |
outer tissue of leaves, stems, roots, flowers, and seeds.
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| epinasty |
downward curling of the leaf blade resulting from more rapid cell growth on the upper side of the petiole than on the lower side. Often a symptom of plant disease. Distortion of growth, often caused by certain types of herbicides.
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| epiphyte |
nonparasitic plant that uses another plant as a host for mechanical support only but does not derive nutrients or water from it. Contrast with parasite and saprophyte.
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| eradication |
total removal of a species from a particular area. May refer to pathogens or insect pests or to unwanted plants.
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| espalier |
(1) (noun) specialized technique of pruning and training plants to grow within a plane, such as along a wall or a fence. (2) (noun) a plant trained in that manner. (3) (verb) to train plants in that manner.
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| essential elements |
17 minerals essential to the growth and development of trees. These minerals are essential because plants cannot complete their life cycle without them. See macronutrient, micronutrient, and primary elements.
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| ethephon |
plant growth regulator used to promote fruit ripening. Also stimulates latex flow in rubber trees.
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| ethylene |
gaseous plant hormone that triggers fruit ripening and plant senescence.
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| evapotranspiration (ET) |
loss of water by evaporation from the soil surface and transpiration by plants.
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| evergreen |
tree or other plant that does not shed all of its foliage annually. Contrast with deciduous.
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| excurrent |
tree growth habit characterized by a central leader and a pyramidal crown. Contrast with decurrent.
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