from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun agriculture An
irrigationsystem which catches mountain water and controls its movement down man-made subterranean channels, found in Oman.
Sorry, no etymologies found.
They are called foqjara in northwest Africa and aflaj on the Arabian Peninsula.
It highlights the example of Australia, which was able to cut irrigation water use by half without a loss of output. aflaj, ancient irrigation systems in Oman, with tradable water rights and more than