Minerals (8)
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16
Oct
2008
Iron
Minerals
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Iron must be present in the soil in a form assimilable otherwise occurs deficiency manifested by green-sickness. Iron deficiency is associated with a yellowing of leaves.

16
Oct
2008
Magnesium
Minerals
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It is found in soil. Magnesium absorption by plants is conditioned by three main factors: the amount of land accessible, magnesium interactions with other elements and requirements of the plant. Insufficient magnesium produces necrosis of leaves. Magnesium accumulate in seeds, formed with phosphoric acid, fitina.

16
Oct
2008
Calcium
Minerals
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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.

16
Oct
2008
Sodium
Minerals
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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.

16
Oct
2008
Potassium
Minerals
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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.

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