Biosalinity
 | This article includes alist of references,related reading,orexternal links,but its sources remain unclear because it lacksinline citations.(March 2013) |
Biosalinityis the study and practice of using saline (salty) water for irrigatingagricultural crops.
Many arid and semi-arid areas actually do have sources of water, but the available water is usuallybrackish(0.5–5g/L salt) orsaline(30–50g/L salt). The water may be present in undergroundaquifersor asseawateralong coastal deserts. With traditional farming practices, saline water results in soilsalinization,rendering it unfit for raising most crop plants. Indeed, many arid and semi-arid areas were simply considered unsuitable for agriculture, andagricultural developmentof these areas was not systematically attempted until the second half of the 20th century.
Research in biosalinity includes studies of thebiochemicalandphysiologicalmechanisms of salt tolerance in plants,breedingand selection for salt tolerance (halotolerance), discovery of periods in a crop plant's life cycle when it may be less sensitive to salt, use of salineirrigationwater to increase desirable traits (such assugarconcentration in a fruit) or to control the ripening process, study of the interaction between salinity andsoilproperties, and development of naturally salt-tolerant plant species (halophytes) into useful agricultural crops. See alsohalophilebacteria,which thrive under conditions of high salinity.
When properly applied (watering well in excess ofevapotranspiration,maintainingsoil structurefor excellent drainage), brackish-water irrigation does not result in increased salinization of the soil. Sometimes this means that farmers have to add extra water after a rainstorm, to carry salts back down to below the root zone.
See also
[edit]- Alkali soil– Soil type with pH > 8.5
- Arid Forest Research Institute (AFRI)– Indian forest research institute
- Biosaline agriculture– Production of crops in salt-rich conditions
- Crop tolerance to seawater– Crop tolerance to seawater is the ability of an agricultural crop to withstand the high salinity induced by irrigation with seawater.
- Halophyte– Salt-tolerant plant
- Halotolerance– Adaptation to high salinity
- Salt tolerance of crops
- Sodium in biology– Use of Sodium by organisms
- Soil salinity– Salt content in the soil
- Soil salinity control– Controlling the problem of soil salinity
External links
[edit]Organizations involved in biosaline research and development
[edit]- CGIAR: Consultative Group on International Agricultural Research
- ICBA: International Center for Biosaline Agriculture
- USDA's George E. Brown Jr. Salinity Laboratory
- Salt Farm Texel
- The Seawater Foundation
Popular reviews
[edit]- Glenn, E. P.; Brown, J. J.; O'Leary, J. W. (1998)."Irrigating Crops with Seawater,"Scientific American,Vol. 279, no. 8, Aug. 1998, pp. 56–61.