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How plants obtain the substances necessary for life

Chemical analysis of plants

The chemical composition of plants

Chemical analysis of plants

Macro-elements, trace elements and ultra-trace elements

Dry plant mass

Essential elements

Quantities of essential elements in 1000 g of dry plant mass

Types of mineral ions in the soil

Locations of mineral ions in the soil

Formation of mineral waters

Role of cations in plant cells

Role of anions in plant cells

Role of macro-elements absorbed as anions

Effects of macro-element deficiencies

Deficiency of macro-elements

Macro-element deficiency

The use of fertilizers in agriculture

The dangers of using inorganic fertilizers

Inorganic and organic fertilizers