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Nutrients required by Plants for Growth

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Crops obtain most of their carbon and oxygen from the air. Hydrogen is obtained from soil water. Carbon dioxide is especially important for plant growth. It is taken up by the plant from air through pores in the green leaves and combines with hydrogen from soil water, to form carbohydrate and other plant substances by energy from sunlight. This process is knows as photosynthesis. Out of the 13 nutrients taken from the soil, Nitrogen, Phosphorus and Potassium are used in large quantities and hence known as primary nutrients. Calcium, Magnesium and Sulphur are needed in moderate to small quantities but they play an important role in formation of plant tissues. These are known as secondary nutrients. The remaining are needed in very small quantities and are known as micro-nutrients. Plants need 16 elements to grow. They get these from air, water and soil.

Type Nutrients Source
Macro-nutrient Carbon Air & Water
Macro-nutrient Hydrogen Air & Water
Macro-nutrient Oxygen Air & Water
Macro-nutrient Nitrogen Soil
Macro-nutrient Phosphorus Soil
Macro-nutrient Potassium Soil
Micro-nutrient Calcium Skeleton Elements
Micro-nutrient Magnesium Example
Micro-nutrient Sulphur Example
Micro-nutrient Iron Example
Micro-nutrient Manganese Example
Micro-nutrient Boron Example
Micro-nutrient Zinc Example
Micro-nutrient Copper Example
Micro-nutrient Molybdenum Example
Micro-nutrient Chlorine Example

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