Question

Both manures and fertilisers replenish soil fertility. Compare and contrast the
advantages and disadvatages of using them.​

Answer 1

Manures:

(i) These are made with organic wastes

(ii) These are prepared in the open fields

(iii) These are eco-friendly

(iv) These contain low amounts of nitrogen, phosphorus and potash

(v) Enrich the humus ( top layer ) of the soil

(vi) Do not cause pollution.

(vii) These are not much productive

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

disadvantages 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.

Fertilisers:

(i) These are made with chemicals

(ii) These are prepared in the factories

(iii)These are not eco-friendly

(iv)These contain high amounts of nitrogen, phosphorus and potash

(v) Degrade the quality of humus ( top layer ) of the soil

(vi) Cause pollution

(vii)  Very much productive.

advantages of using fertilizer

1 it helps us to avoid fallowing

2 it increases crop yield

3 reduces time

disadvantages

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

4 it also degrades land

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