Ring culture

Tomato plants using ring culture. There is water inside the frame with gravel.

Ring culture is a method of cultivating tomato plants. Tomato plants are grown in a bottomless pot, a "ring", and the pot is partially submerged in a tray of water.It is perhaps best described as Two Zone Culture.The gardener aims to have one layer or zone of roots in a container( bottomless pot) and a second layer or zone of roots in some permeable material like gravel, sand or coarse ashes below. Ring culture forces the plants to develop two root systems: one which will absorb the nutrients contained in the soil and another which will absorb the water from the tray. It enables a gardener to grow an excellent group of tomatoes in shallow soil. It is used in greenhouses largely for tomatoes and enables a heavy crop to be grown above, for instance, a gravel path or an ash bed,

See also

• Deep water culture
• Hydroponics

References

• W. Allteron, Frank (2006). Tomatoes for Everyone - With Particular Reference to Ring Culture. READ BOOKS. p. 70. ISBN 1-4067-9797-9. 
• The New Universal Library

Wikimedia Commons has media related to ring culture.