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Irrigation Dictionary : Table of Contents (members login required)\t
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Term No.Term NameTerm Description
5190Dead furrow1 - A double furrow left in the middle of the field or between two lands in ploughing (illustrated). 2 - In the bedding system of surface drainage, de.....
1556Dead man, or DeadmanA log or baulk of timber buried in the ground to provide an anchorage for a cable, placed at right angles to the direction of pull on the cable......
2116Dead soilsSoils having a top layer of peat lump......
2394Dead storage capacity, or Dead storageThe storage volume of a reservoir measured below the invert level of the lowest outlet or the minimum operating level. It is also termed Inactive stor.....
2415Dead storage levelLevel of a reservoir corresponding to the lowest outflow level beyond which the water of the reservoir can not be let off......
6194Dead time1 - Any definite delay deliberately placed between two related actions in order to avoid overlap that might cause confusion or to permit a particular .....
1157Dead waterWater that is not flowing with a significant velocity......
6100DeadheadingTravelling without load, except from the dumping area to the loading point......
5732DealwoodA term loosely used to denote light timbers used for packing cases, crates and similar work......
6405Debris avalancheThe sudden downslope movement of the soil mantle on steep slopes often occurring when the flank of a mountain or volcano collapses and slides downslop.....
1463Debris cone, or Detrital coneA fan-shaped deposit of soil, sand, gravel and boulders built up where a river emerges from highlands into a valley, or where its velocity is reduced .....
8446DebuggingThe process of isolating and correcting all malfunctions and or mistakes in a piece of equipment or a programme of operations......
392Decaimg:equations//383_402_e.jpg.....
2167DecalcificationRemoval of calcium carbonate from the soil by leaching. Technically, replacement of monovalent metallic ions, such as sodium, by hydrogen ions......
2421Decant To remove or draw water from a reservoir without disturbing the sediment or lower liquid levels......
4858DecantationMethod of removing sediment from water by markedly reducing the flow velocity, as in a settling tank, so that sediments can settle, by gravity, to bot.....
7158Decay rateThe rate or reduction of the concentration of a quantity.   Some decay rates are not linear, but may be expressed in terms of “half‑life”.  .....
5740Decay, Rot, or DoteDisintegration of wood tissues caused by fungi or other micro-organism......
8861Decentralisation A general term for a transfer of authority and/or responsibility for performing a function from the top management of an organisation or the central g.....
7323DechlorinationThe partial or complete reduction of residual chlorine in a liquid by any chemical or physical process......
393Deciimg:equations//383_402_e.jpg.....
6885DeciduousFalling off at one end of a growing period (season) or at maturity as with some leaves, antlers, insect wings, etc.  Especially, trees that shed their.....
125DecileA positional measure comprising one of the nine variate values that divide the total frequency into ten equal parts......
8615Decision analysis1 - Analysis focused on the problem of making a single decision. 2 - See 8830......
8830Decision analysis1 - A process of systematic evaluation of alternative solutions to a problem where the decision is made under uncertainty. 2 - See 8615......
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