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Within the diversity of soil types found in agriculture, sodic soils present particular challenges that directly affect the structure of the terrain and, therefore, the health and productivity of crops. Unlike saline soils, where the main concern is the high concentration of salts, in sodic soils the central problem lies in the excessive presence of …
What are Sodic Saline Soils? Sodic saline soils are a type of soil that has high levels of soluble salts, particularly sodium salts (Na+), which can have a negative impact on agriculture. These soils are characterized by having a high concentration of sodium ions in relation to other cations such as calcium (Ca2+) and magnesium …
Humic substances or humus are complex molecules of black or dark brown color, with high molecular weight, colloidal and hydrophilic properties, ionic adsorption and desorption capacity, release of nutrients in the medium and long term. These humic substances are classified based on the solubility of their components in solutions of different pH. This results in …
Saline and sodic soils are the result of the accumulation of soluble salts and exchangeable sodium. For these problems to occur, there must be a generally constant rate of accumulation of salts and sodium; phenomenon that usually occurs in lowlands, where there is accumulation of runoff and poor drainage at one time of the year …
Sodic saline soils It is important to differentiate between saline and sodic soils. Saline soils are those that contain significant amounts of salts more soluble than gypsum, which interferes with the growth of most sensitive crops and plants. Salinity is measured by Electrical Conductivity (EC). In contrast, sodium soils originate when the monovalent sodium ion …