Question

Consider the following statements about adding organic manures to the soil

A. They make the soil rigid so as to hold the plants firmly.

B. They add inorganic matter to the soil which is considered very rich in plant nutrient.

C. They improve the texture of the soil.

D. They enhance the water holding capacity of the soil.

The correct statements are:

1. B, C and D
2. A and D only
3. C and D only
4. A, B and C

Answer 1

Correct Answer - Option 1 : B, C and D

Explanation:

• Manure is an organic substance obtained from the decomposition of plant or animal wastes.
• The process of adding manure to the fields to replenish the soil with nutrients. This process is called manuring.

The advantages of adding manure into the fields are:

1. It enhances the water holding capacity of the soil.
2. it makes the soil porous due to which exchange of gases becomes easy.
3. it increases the number of friendly microbes.
4. it improves the texture of the soil.
5. It adds inorganic matter to the soil which is considered very rich in plant nutrient.

Thereby, the correct statements are B, C & D

Differences between Fertiliser and Manure

Fertiliser	Manure
A fertiliser is an inorganic salt.	Manure is a natural substance obtained by the decomposition of cattle dung, human waste and plant residues.
A fertiliser is prepared in factories.	Manure can be prepared in the field.
A fertiliser does not provide any humus to the soil.	Manure provides a lot of humus to the soil.
Fertilisers are very rich in plant nutrients like nitrogen, phosphorus & potassium.	Manure is relatively less rich in plant nutrients