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 …
There is a growing need in the world to produce more food for the growing population; this, of course, is not an easy task since we are facing a trend of scarcity of natural resources available to carry out this work, from lack of water, pollution, climate change, the frequent scourge of pests and diseases …
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 …
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