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irrigation

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agriculture

agriculture  

The practice of cultivating the soil, growing crops, or raising livestock for human use, including the production of food, feed, fibre, fuel, or other useful products. Also known as farming. See also ...
Agriculture and Agricultural Land

Agriculture and Agricultural Land  

The use of land for the production of food, fiber, and fuel is the principal driver of land use and land cover change and, therefore, a key forcing function of ...
Albanus lacus

Albanus lacus  

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‘Alban Lake’, a crater lake in the Albanus mons near Rome. Its wooded banks in imperial times were studded with villas, e.g. Domitian's. Lacking natural outlets, its waters reach the ...
Alfred Deakin

Alfred Deakin  

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History
(1856–1919)Australian statesman and three times prime minister (1903–04; 1905–08; 1909–10), who played a major role in the early development of the Commonwealth.Born and educated in Melbourne, the ...
aqueduct

aqueduct  

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[MC]An artificial conduit used to supply water to a city from a source some distance away.
Aral Sea

Aral Sea  

A very large freshwaterlake (formerly the world's fourth largest lake) on the border between Kazakhstan and Uzbekistan in Central Asia. Since the 1960s the lake has been drying up and shrinking as a ...
arid region

arid region  

An area with a dry climate which cannot support the growth of trees, woody plants, or most crops (without irrigation), and with a biome in which only drought‐resistant vegetation naturally survives.
canal

canal  

Darius I completed the canal begun by Necho (see saïtes) to connect the Pelusiac branch of the Nile above (south of) Bubastis to the Red Sea. Ptolemy II built a longer canal, from the still undivided ...
Closer settlement

Closer settlement  

Was a scheme for concentrated rural settlement through government repurchase, subdivision and reallocation of large estates. Following the earlier selection Acts of the 1860s, new legislation was ...
dam

dam  

An artificial barrier constructed across a river or valley, usually for flood control, irrigation, and/or power generation. See also reservoir.
Depletion and Restoration of The Ogallala Aquifer

Depletion and Restoration of The Ogallala Aquifer  

[This case study focuses on the history of this crucial supply of ground water and on the increasing risk and consequences of its depletion.]The Ogallala Aquifer, the dominant geologic ...
desalination

desalination  

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The removal of dissolved salts and minerals from saline water to produce fresh, drinkable water. Commercial desalination processes include: reverse osmosis, electrodialysis, multieffect distillation, ...
development

development  

The use of resources to relieve poverty and raise living standards; the means by which a traditional, low-technology society is changed into a modern, high-technology society, with a corresponding ...
drip irrigation

drip irrigation  

A form of irrigation that uses a perforated pipe to deliver water one drop at a time directly to the soil around each plant, in order to eliminate runoff and soil erosion. Also known as trickle ...
dry farming

dry farming  

A method of farming in arid and semi‐arid areas without using irrigation, which relies on treating the land in ways that conserve moisture (including using a mulch).
economy

economy  

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History
[Th]The aspect of a social system that functions to order technological procedures socially and to control them in the interests of social units, whether individuals or collectives.
economy, Hellenistic

economy, Hellenistic  

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The regions brought under the control of the Hellenistic kingdoms showed little economic unity or uniformity. Land-use systems ranged from irrigation regimes in Egypt, Mesopotamia, and parts of Iran ...
flood irrigation

flood irrigation  

A method of irrigation in which entire fields are occasionally deliberately flooded.
furrow irrigation

furrow irrigation  

A form of irrigation in which water is allowed to flow along the furrows between rows of crops.
George Chaffey

George Chaffey  

(1848–1932) and(1856–1926)were Canadian engineers who established an irrigation colony in California in the 1880s. They came to Australia in 1886 after meeting Alfred Deakin during his visit to ...

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