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NIOS Silver Jubilee Year

Functions of Plant Nutrients

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Rural Technology

1. Nitrogen i) It makes plant dark green & succulent

ii) It promotes vegetative growth.

2. Phosphorus i) It stimulates root development, increases the number of tillers, gives strength to straw and prevents lodging.

ii) It hastens ripening of plants and counteracts the effects of excessive nitrogen.

iii) It improves the quality and yield of grain.

It increases disease resistance, enhances the activity of rhizobia and increases the formation of root nodules in legumes.

3. Potassium i) Vigour and disease resistance to plants.

ii) It increases efficiency of the leaf in manufacturing sugars and starch.

iii) It helps to produce stiff straw in cereals and reduces lodging

4. Calcium i) Increases stiffness of straw and promotes early root development and growth.

ii) It encourages seed production

5. Magnesium i) It is essential for all green plants.

ii) Helps in uptake of phosphorus and regulates uptake of other nutrients.

6. Sulphur i) It stimulates root growth, seed formation and nodule formation.
7. Iron i) Essential for formation of chlorophyll and synthesis of proteins and several metabolic reactions.
8. Manganese i) It helps in chlorophyll formation.
9. Zinc i) It helps information of growth hormones and chlorophyll.
10. Copper i) It regulates respiratory activities in plants.
11. Boron i) helps in uptake of calcium and its efficient use by plants.

ii) helps in absorption of nitrogen and is necessary in cell division.

12. Molybdenum i) It is essential for nitrogen fixing organisms both symbiotic and non-symbiotic.
13. Chlorine i) It is considered essential for photosynthetic process.

Intext Questions

Match the followings:

Nitrogen Essential for nitrogen fixing organisms
Potassium Respiratory activity plants.
Iron Dark green plants and succulent
Copper Vigour and disease resistance
Molybdenum essential for formation of chlorophyll

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