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Sodium plays a well defined role in vascular bands and fibers that support the plant tissue. Halophile plants, adopted an environment with high concentrations of sodium, this element is necessary for growth, give a better color of the leaves, increases disease resistance. The halophile plants, the effects of sodium deficiency are the colored leaves, almost white, spotted narcotics.
See also
 Minerals
Sulfur
Sulfur is present in the soil as organic and mineral. Organic sulfur is the most important reserves of ground mineralization and progress to a more or less quickly depending on the activity of microorganisms. Potassium
Of all the elements, potassium is found in greatest quantity in plants, especially the young, in the form of inorganic salts. Potassium deficiency is felt more strongly on soils with high salt content of calcium and magnesium and poor aeration. External symptom of potassium deficiency is the leaf color change, that the appearance of brown spots, especially near the extremities of the leaf. Calcium
Calcium is taken from the environment. In plant cells and tissues to be present in ionic form and the form of inorganic and organic combinations. Nitrogen
One of the major mineral elements of plant nutrition. Nitrogen is found in soil so as combinations of organic and inorganic. Total nitrogen content can reach up to 0.5% of total dry substance of the soil, but more often this content oscillates around 0.1%. |
 
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