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Arboriculture Glossary of TermsThere are 1070 entries in this glossary.
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knot used to attach two lines that can be released quickly by pulling on the final tucked bight.
|slow-release fertilizer (fertiliser, in||
fertilizer that is at least 50 percent water-insoluble nitrogen (WIN). Rate of release may vary depending upon soil moisture and temperature. Contrast with quick-release fertilizer.
|slowly soluble fertilizer (fertiliser, i||
fertilizer formulation that is slowly hydrolyzed in the soil.
connecting device used by tree climbers, primarily for connecting the climbing line to the saddle. Contrast with carabiner.
cutting technique in which offset, bypassing cuts are made so that a section can be broken off easily. See mismatch cut.
kind of block (pulley) that can be opened on one side to receive the bight of a rope.
rigging operation in which a section of upright stem is lowered off itself using a block or strop.
soils with relatively low levels of soluble salts and a concentration of sodium high enough to adversely affect soil structure (symptoms include waterlogging, erosion, soil surface crusting, and poor plant growth). Soils >12 SAR. See sodium absorption ratio.
|sodium absorption ratio (SAR)||
measure of soil sodium content. Ratio of sodium ion concentration to that of calcium (Ca) and magnesium (Mg) (soluble salts). See sodic soils.
decay of plant tissues characterized by the breakdown of tissues within the cell walls. Contrast with brown rot and white rot.
surface layers of sand, clay, silt, and organic material on the surface of the earth that support plants.
material added to soil to improve its physical, chemical, and/or biological properties.
analysis of soil to determine pH, mineral composition, structure, salinity, and other characteristics.
(1) device for removing cores of soil for inspecting or testing. (2) device (drill bit) used to drill holes in the soil for vertical mulching or for the drill-hole method of fertilizing. See earth auger.
compression of the soil, often as a result of vehicle or heavy-equipment traffic, that breaks down soil aggregates and reduces soil volume and total pore space, especially macropore space.
layer or zone of the soil profile with physical, chemical, and biological characteristics that differ from adjacent layers.
smallest grains of soil categorized by size into clay, silt, or sand.
vertical section through the soil and all of the soil horizons.
pH (acidity or alkalinity) of a soil.
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