In nature there are no rich or poor soils. Wild plants are adapted to soils of their natural habitats. Their nutrient requirements are met by minerals from the parent rock and natural growth and decay.
Nutrients are essential for a plant to carry out a normal life cycle. There are at least 16 essential elements. The most important of these – carbon, hydrogen and oxygen – are provided by air and water. The rest come from minerals in the soil and decaying matter. Nutrients are needed for different plant functions – any deficiency or excess results in a vast range of specific symptoms.
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