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Mineral salt [ Physiology Nutrition - Agronomy

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  The solid form of a mineral as it exists in solution occurring naturally in the earth's crust  needed , as nutrients, by living organisms.
For example the common salt (sodium chloride)
 

Plants, like animals, need minerals for healthy growth and to function normally, but plant nutrition is very different from animal nutrition in several ways. In a plant high-energy food (for example, carbohydrate) is made inside the plant by photosynthesis, mineral salts from the environment are absorbed from soil water by the roots (see root hair cell) while animals get theirs from their food. Mineral salts are taken up in soluble form. When mineral salts dissolve in water they separate into particles called ions. Some of the ions travel by diffusion into the root; others are absorbed by active transport. The minerals required in the greatest amounts by plants (also called macroelements) are those containing the elements potassium, phosphorous and in particular nitrogen, (For example nitrate ions or nitrates are used by plants in the production of proteins such as enzymes, so they are important for plant growth) The mineral salts are often in short supply in the soil, which is why inorganic fertilizers are required. Plants also require magnesium in order to make chlorophyll, the green chemical that absorbs the energy of sunlight for photosynthesis. A microelement is a mineral salt required only in tiny amounts , such as calcium, iron, zinc, copper etc.

 

 

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