Reclamation of saline and alkali soils under irrigation
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Reclamation of saline and alkali soils under irrigation

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Published by Agricole Pub. Academy in New Delhi, India .
Written in English

Subjects:

Places:

  • Soviet Union.

Subjects:

  • Solonchak soils -- Soviet Union.,
  • Solonetz soils -- Soviet Union.,
  • Reclamation of land -- Soviet Union.,
  • Soils, Irrigated -- Soviet Union.,
  • Irrigation -- Soviet Union.

Book details:

Edition Notes

Translation of: Kompleksnai͡a︡ meliorat͡s︡ii͡a︡ solonchakovykh i solont͡s︡ovykh pochv pri oroshenii.

StatementA.A. Sidko ... [et al.].
ContributionsSidʹko, A. A.
Classifications
LC ClassificationsS595 .K5713 1988
The Physical Object
Paginationx, 206 p. :
Number of Pages206
ID Numbers
Open LibraryOL2168086M
ISBN 108185005567
LC Control Number88905308

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In Saline–sodic soils reclamation involves the addition of good-quality water to remove excess soluble salts and the use of a Ca 2+ source (CaSO 4 2H 2 O or CaCl 2) to exchange Na + from the soil as a soluble salt, Na 2 SO 4. In Saline–sodic soils a saltwater-dilution method is usually effective in reclamation. Richards LA () Diagnosis and improvement of saline and alkali soils. Soil Sci 78(2) Rietz DN, Haynes RJ () effects of irrigation-induced salinity and sodicity on soil microbial. Saline soils in which the soluble salts contain appreciable amounts of calcium and magnesium do not develop into alkali soils by the action of leaching water. The reclamation is comparatively easy in such soils. The main problem is to leach the salts downward below the root zone and out of contact with subsequent irrigation water. Reclamation and management of saline and alkali soils differ considerably in terms of gypsum usage, irrigation and leaching schedules and choice of crops and cropping system. It is, therefore, warranted that soils belonging to saline-alkali branch are correctly diagnosed for adopting effective reclamation measures.

Li et al. (b) reported a SMP above −5 kPa at 20 cm depth under the emitter in the first year and −10 kPa in the second year, and 6 mm of irrigation water can be used as an indicator for rose drip-irrigation scheduling when irrigating with saline water at saline soils with a gravel–sand layer after tillage in. In other situations where good quality water is available for reclamation of saline soils, it is often helpful to grow crops simultaneously with reclamation efforts to make reclamation economic. There is much literature on the relative tolerance of different crops to soil salinity obtained under a vast range of soil, climatic and salinity. Abstract. Agricultural production in the arid and semiarid regions of the world is limited by poor water resources, limited rainfall, and the detrimental effects associated with an excess of soluble salts, constrained to a localized area or sometimes extending over the whole of the basin. Saline soils are mostly also sodic (the predominant salt is sodium chloride), but they do not have a very high pH nor a poor infiltration rate. Upon leaching they are usually not converted into a (sodic) alkali soil as the Na + ions are easily removed. Therefore, saline (sodic) soils mostly do not need gypsum applications for their reclamation.

To study the genesis, characteristics and reclamation of saline soils Saline soils are defined as soils having a conductivity of the saturation extract greater than 4 dS m-1 and an exchangeable sodium percentage less than The pH is usually less than Formerly these soils were called white alkali soils because of surface crust of white. Reclamation of Saline alkali soil The reclamation of these soils is similar to that of alkali soils. First step is to remove the exchangeable sodium and then the excess salts and sodium are to be leached out. Commonly salt affected soils are referred as problem soils as indicated above. Biochar for Reclamation of Saline Soils. tomatoes grown on a sandy soil under drip irrigation with saline or non-saline water. and phenolic groups were the main forms of alkalis in the. Abstract A field experiment was undertaken to study the mechanism of EM in reclamation of saline-sodic loamy soil with the application of EM in all possible forms (soaking of seeds, tons / acre composted FYM + PM, Kg / acre EM Bokashi, EM irrigations and sprays) compared with conventional method of reclamation, which generally takes years to fully reclaim such lands.