2 edition of Reclamation of saline and alkali soils under irrigation found in the catalog.
Reclamation of saline and alkali soils under irrigation
Translation of: Kompleksnai͡a︡ meliorat͡s︡ii͡a︡ solonchakovykh i solont͡s︡ovykh pochv pri oroshenii.
|Statement||A.A. Sidko ... [et al.].|
|Contributions||Sidʹko, A. A.|
|LC Classifications||S595 .K5713 1988|
|The Physical Object|
|Pagination||x, 206 p. :|
|Number of Pages||206|
|LC Control Number||88905308|
Saline Alkali Soil characteristics, reclamation. The Miracle Of Greens: How Greens And Wild Edibles Can Save Your Life - Duration: BoutenkoFilms Recommended for you. For instance, Montana and Wyoming have mostly saline soils with some saline-alkaline and only isolated occurrences of “black alkali” or sodic soils. Sodic soil reclamation requires the addition of amendments and leaching of salts, and will not be covered in this article. Soil salinity or sodocity is usually a symptom of a problem.
Soil becomes saline by transfer of salts from underground water or from the solution of soil which comes from the lower layer to the upper layer. Thus, salinity develops from redistribution or transfer of salts in soil itself. In India, saline soils are found in an area of 71 lakh hectares, out of which lakh hectares lie in Rajasthan. (ii) In coastal areas if the soil contains carbonates the ingression of sea water leads to the formation of alkali soils due to formation of sodium carbonates. (iii) Irrigated soils with poor drainage. (b) Characteristics: (i) Saline soil has soil pH of more than (ii) Ec is less than
An examination of the composition of saturated paste extracts of these soils shows that these are either to be treated as saline or alkali for the purpose of adopting reclamation techniques. Soils that have the ratio of either and/or, expressed in mol m −3, should be treated as natric and require chemical amendments for reclamation. This review summarizes general information on salt‐affected soils and factors influencing their formation and reclamation. It describes the interrelationships between salinity, irrigation, drainage, and crops. Saline soils are emphasized due to their predominance.
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Leaching is an essential part of the reclamation process, whether the soil is saline or alkali. Leaching is a very old process of removing salts from the soil and ameliorating saline-alkaline conditions. In leaching the field was embanked to hold rain water and subsequently ploughed in. Reclamation of saline and alkali soils under irrigation.
The improvement of saline soils (desalinization, leaching) and of alkali soils (deep loosening, chemical amendments) is considered. Methods are described and associated equations and formulae are provided.
Cookies on CAB DirectAuthor: A. Sidko, S. Miasischev, V. Baiakina, T. Simonova. 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.
Reclamation of Saline and Alkali Soils: Schoonover () in his study of soil problems in India, has listed the following technical requirements for reclamation of saline and alkali soils: 1. Adequate drainage. Availability of sufficient water to meet crop use and also leach the salt below the root zone in the soil.
This book gathers the latest findings on the microbial ecology of saline habitats, plant-microbe interactions under saline conditions, and saline soil reclamation for agricultural use.
The content is. Part 5 Saline and alkali soils: soil and water classification and crop tolerance; management and reclamation of saline, alkali and saline-alkali soils. Part 6 The design of field irrigation systems: selection of irrigation method; design of furrow irrigation layouts; design of border strip irrigation.
Introduction Saline and alkali soil conditions reduce the value and productivity of considerable areas of land in the United States. The problem is an old one, and there is much information on this subject in the technical literature. Reclamation of sodic soils is similar to saline soil in leaching the salts out of the root zone, except that gypsum should be added to remove the sodium.
The amount of gypsum required depends on the soil texture and ESP. Reclamation of these salt-affected soils is a very difficult thing and can take several years, so be patient.
With a high soil-water ratio as represented by the saturated paste, the pH varied from in the highly saline soil to in the non saline soil. Diluting the system to give a soil-water ratio of resulted in a pH of for highly saline and for the non saline soil.
Effect of brackish water irrigation and straw mulching on soil salinity and crop yields under monsoonal climatic conditions. Agric. Water Manage., Properties of salinesodic soils are generally similar to those of saline - soils; however, “black alkali” sodic conditions can be a problem if excess soluble salts are leached without addressing the excess sodium.
Reclamation of saline-sodic soils is the same as sodic soils to ensure that excess salts and sodium are removed.A field experiment at Gudha Experimental Farm, Central Soil Salinity Research Institute, Karnal, India, in /84 evaluated the effect of gypsum (125 t/ha, 50% of gypsum requirement of soil), pyrite (102 t/ha, equivalent to gypsum on a sulphur basis), farmyard manure (FYM) (30 t/ha), gypsum + FYM, pyrite + FYM and a control, with saline (EC iW 40 dS/m) and non-saline (04 dS/m.