Skip to main content

1 Most of these irrigation systems still exist undamaged up to now, in ________ and Polonnaruwa, because of the advanced and precise engineering.

2 The smart controller determines current conditions by means of historic weather data for the local area, a soil moisture sensors (water potential or ________), weather station, or a combination of these.

3 It is a method of artificially raising the water table to allow the soil to be moistened from below the plants' ________ zone.

4 Here, a 'stairs' is made through the use of ground level differences which helps to decrease water ________ and also distributes the water to all patches (sort of irrigation).

5 Sub-irrigation is also used in commercial ________ production, usually for potted plants.

6 After the water source, the water usually travels through a ________.

7 The system was extensively restored and further extended during the reign of King ________ (1153–1186 CE).

8 Irrigation systems are also used for ________, disposal of sewage, and in mining.

9 Advantages are water and nutrient conservation, and labor-saving through lowered system maintenance and ________.

10 ________ has been used successfully on lawns, but it is more expensive than a more traditional sprinkler system.

💡 Interesting Facts

  • a decline of the population of brook trout in the Straight River in central Minnesota was caused by rising water temperatures, prompting government scrutiny of nearby irrigation operations?
  • the Dethridge wheel (pictured), invented in Australia in 1910, measures the flow of water delivered to farms for irrigation?
  • the East Ghor Main Canal diverts nearly all the annual flow of the Yarmouk River for irrigation in Jordan?
  • Mosida, Utah was a failed planned community whose developers tried to irrigate the desert with water pumped from Utah Lake?
  • Kukkarahalli lake adjoining the University of Mysore, was created in 1864 during Mummadi Krishnaraja Wodeyar's rule of the Kingdom of Mysore, to provide water for irrigation?
  • treated wastewater from Kern River Oil Field, the fifth-largest U.S. oil field, is used to irrigate crops in the San Joaquin Valley in California?
  • irrigation canals in the Treasure Valley and Magic Valley have dramatically transformed the Snake River Plain ecoregion in southern Idaho?
  • California's Owens River has been entirely diverted for irrigation and drinking water?