Classification of salt affected soils

Institute of soil sciences. 231 Saline soils 232 Sodic soils.

The salts are primarily composed of car- bonates chlorides sulfates and bicarbonates of calcium Ca2 magnesium Mg2 and sodium Na.

Classification of salt affected soils. These are classified as Salidic Natrustalfs under Alfisols since such soils contain both salic and natric horizons. Reclamation of such soils requires both leaching to remove soluble salts and application of amendments to lower ESP. This creates confusion in the mind of soil survey officials planners and development authorities.

An examination of the composition of saturated paste extracts. ORIGIN CLASSIFICATION AND DISTRIBUTION OF SALT-AFFECTED SOILS 21 Origin of salts. The presence of excess salts on the soil surface and in the root zone characterizes all saline.

In the course of accumulation of knowledge on. Using the EC and ESP characteristics and soil pH salt affected soils are classified as saline saline-sodic and sodic Table 33. These soils contain neutral soluble salts sufficient to interfere seriously with plant.

These are classified as Salidic Natrustalfs under Alfisols since such soils contain both salic and natric horizons. Reclamation of such soils requires both leaching to remove soluble salts and. Classification of Salt Affected Soils Saline Soil.

Contains soluble salts mostly chlorides and sulphates of sodium calcium and magnesium in quantities sufficient to interfere with the physiological activities of most crop plants. The soil PH of saturation extract is 85 Ec 4 dsm ESP 15. Saline sodic soil is.

The following points highlight the three main types of salt affected soils. Soil that contains sufficient soluble salts to impair its productivity is known as saline soils also called as Solonchak. These salts are mainly of chlorides and sulphates of sodium calcium and magnesium.

In arid climatic regions saline soils may. Alkali soils contain salt dominated by bicarbonates or have sufficient exchangeable sodium to interfere with physiological activities of most crop. The PH of alkali soils is 85 Ec 4 dsm and ESP15.

Classification of Salt Affected Soils. Classification of Salt Affected Soils. When salts more soluble than calcium carbonate and gypsum are present in the soil and affect crop growth and yield of most crops these soils are considered salt affectedMost of these soils have an Electrical Conductivity of more than 4 Ohmscm.

Many of them are classified as SolonchakzThe presence of salts affects the plant uptake of nutrients and the microbiological activity in the soil. Classification of saline and sodic alkali soils based on EC pH and ESP About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy Safety How YouTube. Crop selection for salt affected soils crop Tolerance to salinity Tolerance to sodicity Barely Tolerant Moderately tolerant Bean Sensitive Sensitive Corn Moderately Sensitive Sensitive Cotton Tolerant Moderately tolerant Kallar grass Tolerant Tolerant Rice Sensitive Tolerant Wheat Moderately tolerant Moderately tolerant.

ORIGIN CLASSIFICATION AND DISTRIBUTION OF SALT-AFFECTED SOILS. 21 Origin of salts 22 Classification 23 Mode of formation. 231 Saline soils 232 Sodic soils.

SALINE SOILS AND THEIR MANAGEMENT. 311 Measuring salinity status 312 Salinity and plant growth. 32 Reclamation and management.

Characterization and classification of salt affected soils and irrigation water in Tendaho sugarcane production farm North-Eastern Rift Valley of Ethiopia. African Journal of. SALT AFFECTED SOILS When salts more soluble than calcium carbonate and gypsum are present in the soil and affect crop growth and yield of most crops these soils are considered salt affected.

In 1954 the US Salinity Laboratory grouped salt affected soils in to Saline soil Alkali soil Saline Alkali Due to the effect of two common kind of salts neutral and alkali salts it is grouped in to saline. In addition a classification and indicator system for the salt-affected soil in the region was established and 30 salt-affected soil types were identified. Three key soil classification indicators viz.

Soil texture texture stratification combination and total soil salinity were selected to. 2 Definition and classification of salt-affected soils Salt-affected soils are soils with high concentrations of dis-solved mineral salts in their profiles such that these dissolved salts adversely affect crop production Rengasamy2006. The salts are primarily composed of car- bonates chlorides sulfates and bicarbonates of calcium Ca2 magnesium Mg2 and sodium Na.

Institute of soil sciences. Major cations in salt-affected soils are Na Ca 2 Mg 2 and to a lesser extent potassium K. The major anions are chloride Cl sulfate SO 4 2 bicarbonate HCO 3 carbonate CO 3 2 and nitrate NO 3.

Salt-affected soils are generally classified into two main categories saline and sodic.