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Irrigation Dictionary : Table of Contents (members login required)\t
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Term No.Term NameTerm Description
1625E HorizonIs a mineral horizon showing a concentration of sand and silt fractions high in resistant minerals, resulting from a loss of silicate clay, iron or al.....
8148E-commerce, Electronic commerceThe conducting of business communication and transactions over networks and through computers. It also includes all inter-company and intra-company fu.....
4619Early irrigation (USA)Watering carried out well in advance of planting if the moisture in the soil is not adequate to carry out the soil preparation process......
8060Early warningThe provision of timely and effective information, through identified institutions, that allows individuals exposed to a hazard to take action to avoi.....
5444EarthThe softer materials of the lithosphere, specifically called soil in agricultural science and soil science, as distinguished from firm rock. Its basic.....
5815Earth (dike)-coffer dam, or Earthfill coffer damA type of water coffer dam built entirely with earth materials protected by a revetment or by sand bags......
2356Earth dam, or Embankment damA barrier made of earth, clay, sand or sand and gravel, or a combination of these or of the earth and rock......
6145Earth loaderA machine consisting of a frame mounted on crawler tracks, a cutting blade, mouldboard plow, conveyor chute, conveyor belt, and an engine to operate t.....
2627Earth pressureThe pressure or force exerted by retained earth (soil) on any surface or boundary or a wall that varies between two extremes......
6649Earth resources technology satellite (ERTS) One of several unmanned, earth‑orbiting satellites equipped to scan the surface of the Earth to obtain information relating to natural resources and.....
6404Earth-flowA slow flow of earth lubricated with water, occurring as either a low-angle terrace flow or a somewhat steeper but slow hillside flow......
4766Earth, Earthing, Ground, or Grounding cableA electrical conductor that connects metal parts, as of a center pivot irrigation system, directly to the earth.  The cable is intended to eliminate t.....
3176Earthen sectionSection of an irrigation channel having boundaries comprising softer material of the lithosphere, such as silt, clay......
5497EarthenwarePipes and other goods made from ordinary brick-earths, burnt but may be glazed or unglazed......
4277EarthfastA well is said to be earthfast when the friction of the earth against the outside of the drum becomes so great as to stop its descent before the requi.....
2591Earthquake factorThe percentage of gravity acceleration for which a structure is required to be designed......
7913Earthquake flood, or Tsunami1 - Flood in coastal areas or in low lying lands, caused by sea waves after a submarine earthquake or a volcanic eruption.  2 – See 2125 and 9364......
6651Earthwatch programme A programme to assess global environmental trends in air, water, land and human health.   Part of the Action Plan adopted by the United Nations Confer.....
3845Ease-water, FairingThe downstream nose of a pier shaped to promote smooth emergence of the water flowing out of the adjacent bays. There are many forms of ease-waters th.....
2054Ebb currentCurrent due to flood (i.e. falling)......
2023Ebb tideTides during a period between high water and following low water......
8147EBCDICExtended Binary Coded Decimal Interchange Code, an 8-bit code developed by IBM for their mainframe computers, providing 256 bit-pattern equivalents of.....
6947EcdysisMoulting......
7067EcesisGermination and establishment of colonizing plants......
1209Echo sounderAn instrument for determining the depth of water in a stream or lake. The time interval between the generation of acoustic signals and the return of t.....
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