Subirrigation also known as seepage irrigation, is a method of

irrigation Irrigation (also referred to as watering of plants) is the practice of applying controlled amounts of water to land to help grow crops, landscape plants, and lawns. Irrigation has been a key aspect of agriculture for over 5,000 years and has bee ...

where

water Water is an inorganic compound with the chemical formula . It is a transparent, tasteless, odorless, and Color of water, nearly colorless chemical substance. It is the main constituent of Earth's hydrosphere and the fluids of all known liv ...

is delivered to the plant root zone. The excess may be collected for reuse. Subirrigation is used in growing field crops such as

tomato The tomato (, ), ''Solanum lycopersicum'', is a plant whose fruit is an edible Berry (botany), berry that is eaten as a vegetable. The tomato is a member of the nightshade family that includes tobacco, potato, and chili peppers. It originate ...

es, peppers, and

sugar cane Sugarcane or sugar cane is a species of tall, Perennial plant, perennial grass (in the genus ''Saccharum'', tribe Andropogoneae) that is used for sugar Sugar industry, production. The plants are 2–6 m (6–20 ft) tall with stout, jointed, fib ...

in areas with high

water table The water table is the upper surface of the phreatic zone or zone of saturation. The zone of saturation is where the pores and fractures of the ground are saturated with groundwater, which may be fresh, saline, or brackish, depending on the loc ...

s such as

Florida Florida ( ; ) is a U.S. state, state in the Southeastern United States, Southeastern region of the United States. It borders the Gulf of Mexico to the west, Alabama to the northwest, Georgia (U.S. state), Georgia to the north, the Atlantic ...

and in

commercial Commercial may refer to: * (adjective for) commerce, a system of voluntary exchange of products and services ** (adjective for) trade, the trading of something of economic value such as goods, services, information or money * a dose of advertising ...

greenhouse A greenhouse is a structure that is designed to regulate the temperature and humidity of the environment inside. There are different types of greenhouses, but they all have large areas covered with transparent materials that let sunlight pass an ...

operations. Three basic types of subirrigation system are in general use for potted plants in greenhouses: ebb-and-flow ( bench-mounted enclosures holding pots are filled and then drained); trough (water is flowed through bench-mounted, slightly sloping enclosures containing pots); and flooded floor (special sloped concrete flooring is

flood A flood is an overflow of water (list of non-water floods, or rarely other fluids) that submerges land that is usually dry. In the sense of "flowing water", the word may also be applied to the inflow of the tide. Floods are of significant con ...

ed and drained). Greenhouse subirrigation has been growing in popularity since the 1990s. Advantages are water and

nutrient A nutrient is a substance used by an organism to survive, grow and reproduce. The requirement for dietary nutrient intake applies to animals, plants, fungi and protists. Nutrients can be incorporated into cells for metabolic purposes or excret ...

conservation, and

labor Labour or labor may refer to: * Childbirth, the delivery of a baby * Labour (human activity), or work ** Manual labour, physical work ** Wage labour, a socioeconomic relationship between a worker and an employer ** Organized labour and the labour ...

-saving. The outfitting

cost Cost is the value of money that has been used up to produce something or deliver a service, and hence is not available for use anymore. In business, the cost may be one of acquisition, in which case the amount of money expended to acquire it i ...

is relatively high. Potential problems, such as the possibility of increased presence of

disease A disease is a particular abnormal condition that adversely affects the structure or function (biology), function of all or part of an organism and is not immediately due to any external injury. Diseases are often known to be medical condi ...

recycle ReCycle is a music loop editor designed and developed by Sweden, Swedish software developers Propellerhead Software. It runs on Microsoft Windows and Apple Macintosh based Personal Computer, PCs. The software debuted in 1994. The principal idea ...

water, have only begun to be investigated. One of the disadvantages of sub-irrigated closed systems, such like Earth Boxes and sub-irrigated planters, is that soluble salts cannot be flushed into the lower soil profile and build up over time.

References

External links

Manual Monitoring of Farm Water Tables
- University of Florida IFAS Extension
Irrigated Acreage in Florida: A Summary through 1998
- University of Florida IFAS Extension
Efficiencies of Florida Agricultural Irrigation Systems
- describes field subirrigation systems as used in Florida Irrigation Sustainable agriculture {{Horticulture-stub de:Bewässerung#Unterflurbewässerung

See also

References

External links