Soils is a major source of nutrients needed by plants for growth. The main nutrients is the trio which know as NPK. Then, the other important nutrients are calcium, magnesium and and sulfur. Plants also need iron, manganese zinc, copper, boron and molybdenum in a small quantities.
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Macronutrients
Macronutrients
Nitrogen
Nitrogen is a key element in plant growth. It is found in all plant cells, in plant proteins and hormones, and in chlorophyll.
Phosphorus
Phosphorus helps transfer energy from sunlight to plants, stimulates early root and plant growth, and hastens maturity.
Potassium
Potassium increases vigor and disease resistance of plants, helps form and move starches, sugars and oils in plants, and can improve fruit quality.
Calcium
Calcium is essential for root health, growth of new roots and root hairs, and the development of leaves.
Magnesium
Magnesium is a key component of chlorophyll, the green coloring material of plants, and is vital for photosynthesis.
Sulfur
Sulfur is a constituent of amino acids in plant proteins and is involved in energy-producing processes in plants. It is responsible for many flavor and odor compounds in plants such as the aroma of onions and cabbage.
Micronutrients
Micronutrients
Iron
Iron is a constituent of many compounds that regulate and promote growth.
Manganese
Manganese helps with photosynthesis.
Copper
Copper is an essential constituent of enzymes in plants.
Zinc
Zinc helps in the production of a plant hormone responsible for stem elongation and leaf expansion.
Boron
Boron helps with the formation of cell walls in rapidly growing tissue. Deficiency reduces the uptake of calcium and inhibits the plant's ability to use it.
Molybdenum
Molybdenum helps bacteria and soil organisms convert nitrogen in the air to soluble nitrogen compounds in the soil, so is particularly needed by legumes. It is also essential in the formation of proteins from soluble nitrogen compounds.
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