Soil is a very precious asset that must be cared for in order to feed the world population as it is necessary to be able to cultivate and obtain the necessary productions from a world population that is constantly growing. The amount of land available for agriculture is constantly decreasing due to human practices in the construction of roads and buildings. In addition, soils must be as productive as possible and must be cared for against problems such as erosion, pollution, salinity, etc.Soil salinity refers to the high concentration of salts in the soil and the origin of these can be naturally or due to incorrect agronomic management that increases the concentration of salts in agricultural production. The areas where the most saline conditions are usually present are arid areas, with irrigation and along the coast.
The most frequent soil salinity situation is NaCl, but saline soils usually present a combination of chloride salts, Na + sulfates, Ca2 + and Mg2 +.
The negative consequences of having soil salinity are very high since they produce different toxicity effects in plants such as hydric stress due to plasmolysis, passage of water from the plant to the soil, specific toxicity, nutritional imbalance due to high levels of Cl and Na that decrease the uptake of other nutrients such as K +, NO3-, etc. and increases in reactive oxygen species (ROS).
Sodicity is the dispersing action of sodium in the soil that affects its properties such as structure and unstable aggregates that obviously influence the agronomic performance of the crop.
Obviously the tolerance of each particular plant influences how salinity affects it. These problems will influence non-halophilic plants, irreversibly inhibiting growth, having a lower yield.
Over the years, many studies have been carried out on the problem of salinity and sodicity using different agronomic solutions to improve soil conditions.
Classifying soils depending on salinity:
Exchangeable sodium is a very important measure and is calculated with the SAR and this is related to the PSI (ESP)
DISPER OSMOTIC has been designed and tested for many years by the technical and R&D department, obtaining very valuable information and excellent results that have allowed them to make a mathematical model to apply the correct doses in each situation, since it will depend on the Electrical Conductivity (CE), the type of soil (Sandy, loamy, Clayey) and the susceptibility of each crop. DISPER OSMOTIC is designed with molecules with high osmoregulatory activity (ORT Technology). It should be applied from the first stages in intervals of 7 to 15 days.