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Arboriculture Glossary of Terms
There are 1070 entries in this glossary.
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| Term | Definition |
|---|---|
| SA |
acronym for Standards Australia, a national consensus standards-setting body. See AS 4373.
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| safe working load |
see working-load limit.
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| saline |
soils with high concentrations of both soluble salts (saline) and sodium ions (sodic). See saline soils and sodic soils.
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| saline soils |
soils with a high concentration of soluble salts. Can cause poor plant growth.
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| salt index |
osmotic potential ratio of a fertilizer compared to sodium nitrate, based on the relative value of 100. The higher the salt index, the more likely plant damage will occur.
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| sand |
soil particles with a size between 0.06 and 2.0 millimeters in diameter. Contrast with clay and silt.
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| sanitation |
cultural practice of removing dead, infested, or diseased plant parts to reduce the spread of insects or disease.
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| saprophyte |
organism that lives on and may act to decay dead organic matter. Contrast with epiphyte and parasite.
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| sapwood |
outer wood (xylem) that is active in longitudinal transport of water and minerals. Contrast with heartwood.
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| saturation point |
point at which a soil or an aquifer will no longer absorb any amount of water without losing an equal amount. Compare to available water, field capacity, gravitational water, and permanent wilting point.
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| scabbard |
protective sheath for a pruning saw or other tool.
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| scaffold |
(1) pertaining to tree architecture or form, a strong and properly spaced arrangement, framework, or system of branches throughout the crown. (2) a work platform, which may be stationary or moving.
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| scaffold branches |
permanent or structural branches that form the scaffold architecture or structure of a tree.
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| scaffold knot |
see double fisherman
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| scale |
one of a group of insects that attach themselves to plant parts and suck the sap.
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| scarf cut |
wedge-shaped cut forming the front of the hinge used in tree or limb removal. See face notch.
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| Schwabisch |
type of friction hitch used in climbing and rigging.
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| scion |
top part of a graft, with leaves and buds, that is grafted to the root stock.
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| scorch |
browning and shriveling of foliage, especially at the leaf margin.
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| screw link |
connecting device with a threaded closure mechanism. Used to secure equipment or tree sections in rigging operations.
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