This powerpoint presentation includes Plant Nutrients, Classification and Role of Plant Nutrients

1. Vikas Kashyap
M.Sc (G&PB)
Chaudhary Charan
Singh University,
Meerut

2. What is Plant Nutrient?
Plant nutrients are the chemical elements that
are essential to the nourishment of plant health.
OR
A mineral plant nutrient is an element which is essential or
beneficial for plant growth and development

3. Classification of Plant Nutrient
There are different basis of classification of essential nutrients:
1.Quantity of nutrient required
2.Mobility of nutrient in soil
3.Mobility of nutrient with in plant
4.Functions in plant
On the basis of quantity of nutrient required:
1. Basic nutrients:
These constitute 96% of total dry matter of plant.
→Carbon
→Hydrogen
→Oxygen
Among these, carbon and oxygen constitute 45% each and hydrogen is
6%.

4. 2. Macro Nutrients
The nutrients which are required by plants in large quantities are
called macro or major nutrients. These are nine in number.
Name of Macro nutrients:
 Nitrogen
 Phosphorus
 Potassium
 Calcium
 Magnesium
 Sulphur
 Carbon
 Hydrogen
 Oxygen

6. Macro nutrients have again two categories:
Primary Nutrients
Among macro nutrients, Nitrogen, Phosphorus and
Potassium are known as primary nutrients which are
required in a proper ratio for a successful crop.
Secondary Nutrients
Next to primary nutrients, there are three elements such as
Calcium, Magnesium and Sulphur which are known as
secondary nutrients.

7. 3. Micro nutrients
These nutrients required by plants in small quantities and
also known as minor or trace elements. These are eight in
number
Name of Micro nutrients:
 Manganese
 Iron
 Zinc
 Copper
 Boron
 Molybdenum
 Chlorine
 Cobalt

8. Classification on the basis of Mobility of Nutrient in the Soil
1. Mobile Nutrients:
The nutrients are highly soluble and these are not adsorbed on clay
complexes.
Example: NO3
-, SO4
2-,BO3
2-, Cl- and Mn+2
2. Less Mobile Nutrients:
They are soluble, but they are adsorbed on clay complex, so their mobility
is reduced.
Example: NH4
+, K+, Ca+, Mg2+, Cu2+
3. Immobile Nutrients:
Nutrient ions are highly reactive and get fixed in the soil.
Example: H2PO4
-,HPO4
2-, Zn2+

9. Classification on the basis of Mobility with
in Plant
• Highly mobile: N, P and K.
• Moderately mobile: Zn
• Less mobile: S, Fe, Mn, Cl, Mo and Cu
• Immobile: Ca and B

10. Classification on the basis of Functions in the Plant
1. Elements that provide basic structure to plant
Example: Carbon, Hydrogen and Oxygen
2. Elements useful in energy storage, transfer and bonding: These are
accessory structural elements which are more active and vital for living
tissues.
Example: N, S and P.
3. Elements necessary for charge balance.
Example: K, Ca and Mg.
4. Elements involved in enzyme activation and electron transfer.
Example: Fe, Mn, Zn, Cu, B, Mo and Cl.

11. Role of Plant
Nutrients

12. Role of Plant Nutrients
Functions of Nitrogen
 Increasing the growth and development of all
living tissue.
 Increasing germination of crops.
 Improves the quality of crop produce.
 It increase utilization of P and K.

13. Functions of Phosphorus
 It promotes to root formation and growth.
 Improve the quality of fruits.
 Rhizobia by increasing nodulation.
 Seed formation and leads to early maturity.

14. Functions of Potassium
 It increases the resistant in plants against
moisture stress, heat, frost and disease.
 Improve the crop produce quality.
 Lodging resistant in cereals.
 Wilt resistant in cotton and mosaic virus resistant
in cotton.

15. Functions of Calcium
 Increasing symbiotic fixation of atmospheric
nitrogen.
 It increases availability of molybdenum.
Functions of Magnesium
 It is constitute of chlorophyll.
 Helps in the photosynthesis of the plants.

16. Functions of Sulphur
 Synthesis of glucosides in mustard oils.
 Promote to nodule formation.
Functions of Iron
 A key role in nitrogen fixation.
 Helps in the photosynthesis.
 Formation of the chlorophyll.

17. Functions of Manganese
 Chlorophyll synthesis.
 Development of chloroplast.
 Increase availability of P and Ca in plants.
Functions of Copper
 Chlorophyll formation.
 Electron transport from chlorophyll.

18. Functions of Zinc
 Role in photosynthesis.
 It regulates of auxin concentration.
 Flower setting and proper development of fruits,
Functions of Molybdenum
 Synthesis of protein in the plants.
 Help in nitrogen fixation by rhizobia.
 Increases in availability of P and S in soil.

19. Functions of Boron
 Proper development of tissue.
 Help in maturity.
 Formation of cell wall.

20. References:
 https://www.agricultureinindia.net/
 http://agropedia.iitk.ac.in/
 https://www.clemson.edu
 https://agriculturistmusa.com/
and other internet sources.