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Currently, the theory of magnetic treatment of aqua systems is at the stage of making and substantiating hypotheses, though experiments prove that magnetic treatment of water changes physical and chemical properties of water, namely, it accelerates its coagulation and absorption, changes salts solvability and gas concentration, crystallization and wetting, magnetic susceptiveness, viscosity and hydration of ions, the kinetics of chemical reactions (Malkin, Zhuravska, & Kovalenko, 2015).
The following empirical dependences are revealed when water systems are treated magnetically:
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The effect of magnetic treatment gradually disappears after a short-term increase;
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Many cases show extreme dependence of the effect on characteristics of magnetic field such as intensity and field gradient;
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The reverse during magnetic treatment enhances the effect of a solution treatment. Its function is to make ions accumulate at the walls of the pipeline while moving in magnetic field. It causes them to interact further;
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Almost all research confirms the presence of the best velocity of the flow;
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The effect of magnetic treatment depends on the composition of water system.
There are cases of the effective use of magnetized water to soak seeds, water plants and desalination of soil (Amaya, et al., 1996); Flórez, Carbonell, & Martínez, 2007; Malkin, Furtat, Zhuravska, & Usachov, 2014).
Watering plants with magnetoactive water influences on how plants uptake nutritional chemicals and accelerates plants growth, enhances the yield, increases the content of mineral salts, sugar and dry matter. Such water has fungicide properties and can inhibit the process of sporulation of phytopathogenic fungi (Klassen, 1982).
Plants watering with magnetically activated water provided for increase of yield by 10-20% of peas, mustard, cabbage, maize, onions, alfalfa, carrots, cucumbers, sunflower, millet, wheat, radish, rye, rice, lettuce, beets, soy, tomato, beans, barley and potatoes (Mahmood, & Usman, 2014; Teixeira-da-Silva, & Dobránszki, 2014).
Plants watering with magnetically activated water helps to convert nitrogen, phosphorus, potassium into the form consumed by plants, therefore the content of these substances in plants increases by 10-15%. (Klassen, 1982).
The fact that the enhancement of agricultural crop yield after irrigation water has been processed magnetically can be explained by the increase of solubility, the degasification of irrigation water and its enrichment with oxygen, the enhancement of membrane permeability, and how the plants uptake mineral fertilizers.