Question

4.
What are crumbs? Why should they be broken?
5.
Define the term 'transplantation? List any two ad
Answer the following questions.
1. State the advantages of ploughing the soil. S
which it is done.
2.
Both manures and fertilisers replenish soil fer
advantages and disadvatages of using them.
165​

Answer 1

Explanation:

4 .The crumbs are the big pieces of the soil formed when the field is ploughed. They should be broken ,so that the air curculation in soils takes place.

5.In some crops like paddy, tomato and chilli, seeds are sown in a small plot called nursery. When seedling are formed, they are manually planted in the field. This is known as transplantation. ... - Farmer can selectively cultivate only healthy plants. - the plants can be planted at appropriate distance.

1.The advantages of ploughing are: Loosening of soil can improve air circulation. The roots can penetrate deeper into the soil, thus holding the plant firmly. Ploughing enhances the water retention capacity of the soil

2.Advantages of Manure

It increases the water-holding capacity of the soil.

It makes the soil porous and facilitates the exchange of gases.

The texture of the soil improves.

The number of microbes increases in the soil.

Advantages of fertilizers

They are quick in providing plant nutrients and restoring soil fertility.

They are portable and easy to transport.

Plants easily absorb fertilizers.

Fertilizers improve and increase the productivity of many crops such as wheat, maize, and rice.

Answer 2

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✍ $\bf\red{1}$st Question ⁚ -

What are crumbs? Why should they be broken?

⟹ A ploughed field has large pieces of soil called crumbs.These crumbs are crushed with wooden plank or by tractor . The field is then levelled for sowing and irrigation purposes .

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✍$\bf\red{2}$nd Question ⁚-

Define the term 'transplantation? List any two advantages.

⟹ When seedlings are grown in the nursery plot for the few weeks and then transplanted on the other field/farms

for the further growth of crop is called transplantation .

The process of transplantation in crop production has the some following advantages -

• it enables us to select only healthy seedlings for the better production .
• the process of transplantation promotes better penetration of roots in the soil .
• it promotes better development of shoot system of plant .

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✍$\bf\red{3}$rd Question ⁚-

State the advantages of plugging of the soil .

⟹ A plough is a tool or farm implement used in farming for initial cultivation of soil in preparation for sowing seed or planting to loosen or turn the soil. Ploughs were traditionally drawn by working animals such as oxen and horses, but in modern times are mostly drawn by tractors. The process of loosening the soil for cultivation is called ploughing. The primary purpose of ploughing is to turn over the upper layer of the soil, bringing fresh nutrients to the surface, while burying weeds and the remains of previous crops and allowing them to break down.

The advantages of ploughing are:

Loosening of soil can improve air circulation.

The roots can penetrate deeper into the soil, thus holding the plant firmly.

Ploughing enhances the water retention capacity of the soil.

Ploughing uproots the weeds growing in the field and aids in the growth of microbes.

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✍$\bf\red{4}$th Question ⁚-

Both manures and fertilisers replenish soil advantages and disadvatages of using them. .

Advantages of using manure -

1). it replenish the soil naturally as it contains organic substances like cow dung fodder etc .

• 2). it does not harm soil , it is free from chemicals.

• 3). it is easily available. cheap .

• 4). using manure we get healthy crops

Diisadvantages of using manure -

• 1). it takes a long time to form manure .

• 2). when we use manure , again it takes more time as compared to fertilizer to replenish the soil.

Advantages of using fertilizer -

• 1). it helps us to avoid fallowing .

• 2). it increases crop yield

• 3). reduces time

Disadvantages of using fertilizer -

• 1). it is very expensive

• 2). crop that we get contains harmful chemicals 3 from land sometimes fertilizer also get mixed with water and cause water pollution

• 3). it aso degraded land

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